IEM :: Monthly Summaries

The following tables present IEM computed monthly data summaries based on daily data provided by or computed for the IEM. A download interface exists for the daily summary information. The climatology is provided by the nearest NCEI climate station () within the current 1991-2020 dataset.

To load shown data into Microsoft Excel, highlight the table information with your mouse and then copy/paste into Excel.

Precipitation Totals [inch]

Year	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
1973	0.00	0.00	0.00	0.00	0.00	0.00	0.00	M	M	M	0.00	0.00
1974	0.00	M	0.00	0.00	M	M	0.00	0.00	0.00	0.00	0.00	0.00
1975	0.00	0.00	0.00	M	M	M	M	0.00	0.00	M	M	0.00
1976	M	M	0.00	0.00	0.00	0.00	0.00	M	M	M	M	M
1977	M	M	M	M	M	M	M	M	M	M	M	M
1978	M	M	M	M	M	M	M	M	M	M	M	M
1979	M	M	M	M	M	M	M	M	M	M	M	M
1980	M	M	M	M	M	M	M	M	M	M	M	M
1981	M	M	M	M	M	M	M	M	M	M	M	M
1982	M	M	M	M	M	M	M	M	M	M	M	M
1983	M	M	M	M	M	M	M	M	M	M	M	M
1984	M	M	M	M	M	M	M	M	M	M	M	M
1985	M	M	M	M	M	M	M	M	M	M	M	M
1986	M	M	M	M	M	M	M	M	M	M	M	M
1987	M	M	M	M	M	M	M	M	M	M	M	M
1988	M	M	M	M	M	M	M	M	M	M	M	0.00
1989	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00
1990	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00
1991	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00
1992	4.33	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00
1993	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00
1994	0.00	0.00	0.00	0.00	0.00	0.00	M	0.00	0.00	0.00	0.00	0.00
1995	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00
1996	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.04	0.00	0.00	0.00	0.00
1997	0.00	0.00	0.00	0.00	0.00	0.00	0.08	0.00	0.00	0.00	0.00	0.00
1998	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.20	0.04	0.00	0.00
1999	0.00	0.02	0.00	0.00	0.00	0.01	0.24	0.00	0.00	0.00	0.00	0.00
2000	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00
2001	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.08	0.00	0.00	0.00	0.00
2002	0.00	0.00	0.00	0.00	0.00	0.07	0.32	1.69	0.06	0.16	0.00	0.00
2003	0.00	0.00	0.00	0.00	0.00	0.63	0.08	0.00	0.08	0.01	0.00	0.00
2004	M	M	M	M	M	M	M	M	M	M	M	M
2005	M	M	M	M	M	M	M	M	M	M	M	M
2006	M	M	M	M	M	M	M	M	M	M	M	M
2007	M	0.00	M	M	M	M	M	M	M	M	M	M
2008	M	M	M	M	M	M	M	M	M	M	M	M
2009	M	M	M	M	M	M	M	M	M	M	M	M
2010	M	M	M	M	M	M	M	M	M	M	M	M
2011	M	M	M	M	M	M	M	0.00	0.00	0.00	0.00	0.00
2012	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00
2013	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	M	M	M
2014	M	M	M	M	M	M	M	M	M	M	M	M
2015	M	M	M	M	M	M	M	M	M	M	M	M
2016	M	M	M	M	M	0.00	0.00	M	M	M	M	M
2017	M	M	M	M	M	M	0.00	M	M	M	M	M
2018	M	M	M	M	M	M	M	M	M	M	M	M
2019	M	M	M	M	M	M	M	M	M	M	M	M
2020	M	M	M	M	M	M	M	M	M	M	M	M
2021	M	M	M	M	M	M	M	M	M	M	M	M
2022	M	M	M	M	M	M	M	M	M	M	M	M
2023	M	M	M	M	M	M	M	M	M	M	M	M
2024	M	M	M	M	M	M	M	M	M	M	M	M
2025	M	M	M	M	M	M	M	M	M	M	M	M

Average Wind Speed [MPH]

Year	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
1973	1.1	M	8.9	M	M	M	2.7	M	M	M	M	M
1974	M	M	4.9	M	M	M	M	M	M	M	4.6	M
1975	M	M	M	M	M	M	M	M	M	M	M	M
1976	M	M	M	M	M	M	M	M	M	M	M	M
1977	M	M	M	M	M	M	M	M	M	M	M	M
1978	M	M	M	M	M	M	M	M	M	M	M	M
1979	M	M	M	M	M	M	M	M	M	M	M	M
1980	M	M	M	M	M	M	M	M	M	M	M	M
1981	M	M	M	M	M	M	M	M	M	M	M	M
1982	M	M	M	M	M	M	M	M	M	M	M	M
1983	M	M	M	M	M	M	M	M	M	M	M	M
1984	M	M	M	M	M	M	M	M	M	M	M	M
1985	M	M	M	M	M	M	M	M	M	M	M	M
1986	M	M	M	M	M	M	M	M	M	M	M	M
1987	M	M	M	M	M	M	M	M	M	M	M	M
1988	M	M	M	M	M	M	M	M	M	M	M	M
1989	7.8	6.2	6.1	6.6	5.3	4.7	2.6	3.2	3.4	4.0	3.8	4.7
1990	5.1	5.0	5.4	5.7	5.3	4.4	2.8	3.2	3.0	4.2	5.9	5.2
1991	4.0	5.0	6.3	5.2	4.5	4.6	3.5	2.3	4.6	3.5	3.7	3.0
1992	2.2	3.6	3.3	4.7	4.6	4.2	3.8	4.3	4.6	5.1	3.7	6.0
1993	3.4	4.2	5.2	5.5	5.7	4.4	3.4	3.5	3.8	4.8	5.2	5.5
1994	6.1	6.1	7.2	6.0	5.6	5.0	M	0.0	4.4	3.6	4.9	4.4
1995	5.1	7.8	6.4	5.5	4.9	3.8	3.1	2.7	2.8	4.2	5.5	5.6
1996	4.3	6.1	6.6	5.8	5.0	5.0	5.1	4.5	4.7	4.9	6.2	3.8
1997	5.2	7.0	7.0	5.5	7.1	4.1	4.2	4.2	3.1	3.7	3.4	5.0
1998	7.3	7.8	8.5	7.7	5.4	8.2	6.2	5.1	4.3	5.1	6.1	5.3
1999	8.6	7.0	6.7	5.0	5.2	4.0	3.7	2.5	3.7	3.9	6.8	4.1
2000	6.3	5.3	6.2	5.6	4.6	2.8	3.5	4.3	3.3	3.8	3.5	5.6
2001	5.8	6.8	6.1	5.5	5.8	4.3	3.0	2.1	3.7	5.2	5.5	3.6
2002	5.0	5.9	5.6	5.6	4.7	4.8	3.0	4.1	2.8	3.5	5.3	4.9
2003	5.9	4.1	5.2	5.3	5.1	3.5	2.9	3.3	2.4	3.6	3.9	4.5
2004	3.9	5.1	5.2	4.6	5.3	3.2	2.6	3.2	2.9	2.4	3.9	4.4
2005	5.3	4.3	5.2	5.6	4.7	5.9	3.6	3.4	2.8	3.0	4.7	4.8
2006	5.0	4.9	5.0	5.0	5.2	4.3	2.9	3.3	2.4	3.6	3.6	4.1
2007	3.8	4.6	5.1	5.7	4.9	4.5	3.1	2.0	3.0	4.8	4.8	2.8
2008	5.5	4.1	5.1	5.2	4.7	3.3	3.3	2.7	2.6	4.1	4.1	4.4
2009	5.2	5.7	5.3	5.8	4.9	4.4	2.6	2.9	2.8	2.2	3.0	2.3
2010	4.1	4.4	2.2	1.9	3.7	3.3	2.0	2.4	2.4	2.7	2.9	3.3
2011	3.0	4.4	4.3	3.9	4.6	4.2	2.2	2.1	2.9	2.7	2.2	3.0
2012	3.3	4.1	3.4	4.6	4.5	3.3	1.9	2.9	2.8	3.5	5.1	4.9
2013	5.5	4.5	7.6	5.8	4.7	3.9	3.3	3.0	3.0	4.3	4.9	4.3
2014	6.0	7.0	5.8	5.4	6.0	4.2	4.6	5.2	4.8	4.9	5.7	6.1
2015	6.2	5.1	4.5	4.5	4.7	4.7	4.6	4.2	3.5	4.0	4.5	4.5
2016	5.6	7.7	4.8	6.2	5.1	4.3	3.1	3.9	3.4	4.0	5.1	4.8
2017	7.1	8.8	5.9	5.2	6.1	5.1	4.5	4.0	3.2	5.6	5.7	7.5
2018	7.7	8.8	7.5	7.6	7.0	4.7	5.2	3.6	4.2	4.5	4.8	6.2
2019	6.7	5.9	6.0	4.1	4.2	3.2	1.9	1.8	1.5	3.1	4.3	4.2
2020	4.7	4.2	4.6	5.2	5.4	4.8	4.4	3.2	3.8	5.0	7.1	4.4
2021	2.2	1.8	2.8	3.2	3.9	4.4	3.9	5.5	3.8	5.7	6.9	5.8
2022	5.4	6.7	7.2	8.0	6.0	6.4	4.9	4.7	4.9	4.5	4.7	5.4
2023	5.3	5.8	6.5	5.5	5.7	5.8	4.6	4.2	5.0	4.7	5.7	7.5
2024	5.7	6.5	7.8	6.2	6.4	5.8	4.3	3.5	3.9	6.1	6.0	6.1
2025	6.0	7.8	7.8	7.1	5.8	5.3	5.1	M	M	M	M	M

Average Daily High Temperature [F]

Year	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
1973	78.29	79.33	79.57	86.67	83.43	85.75	87.33	M	M	M	87.00	81.00
1974	81.83	M	84.86	89.50	M	M	81.00	81.00	84.00	82.50	85.25	81.00
1975	81.00	84.00	M	M	M	M	M	84.00	84.00	M	M	77.00
1976	M	M	81.00	86.50	84.00	90.00	84.00	M	M	M	M	M
1977	M	M	M	M	M	M	M	M	M	M	M	M
1978	M	M	M	M	M	M	M	M	M	M	M	M
1979	M	M	M	M	M	M	M	M	M	M	M	M
1980	M	M	M	M	M	M	M	M	M	M	M	M
1981	M	M	M	M	M	M	M	M	M	M	M	M
1982	M	M	M	M	M	M	M	M	M	M	M	M
1983	M	M	M	M	M	M	M	M	M	M	M	M
1984	M	M	M	M	M	M	M	M	M	M	M	M
1985	M	M	M	M	M	M	M	M	M	M	M	M
1986	M	M	M	M	M	M	M	M	M	M	M	M
1987	M	M	M	M	M	M	M	M	M	M	M	M
1988	M	M	M	M	M	M	M	M	M	M	M	28.00
1989	46.38	53.85	50.52	51.40	56.87	65.93	61.10	56.42	61.43	50.65	54.31	39.50
1990	50.19	51.07	48.10	52.97	51.45	62.52	61.74	57.90	57.07	49.79	39.17	45.13
1991	46.65	47.46	64.45	87.53	87.93	86.23	85.97	84.90	82.97	83.29	83.79	84.13
1992	76.48	79.11	85.50	87.97	89.68	89.14	87.30	86.28	84.83	85.00	83.53	84.42
1993	85.23	87.14	89.19	90.17	91.32	87.50	84.06	82.58	81.27	83.16	82.23	82.76
1994	86.90	87.86	88.61	90.40	90.29	89.00	M	86.33	85.79	86.84	88.40	86.68
1995	88.48	91.71	90.48	93.30	94.23	91.63	89.77	87.53	87.10	91.06	91.80	86.71
1996	87.48	89.18	90.13	92.50	94.00	92.07	88.35	87.19	88.13	87.19	90.20	88.71
1997	87.94	92.21	91.87	92.27	96.55	91.97	92.29	91.35	87.40	87.74	87.90	84.74
1998	87.52	86.39	90.16	91.43	92.27	92.33	88.97	88.58	83.10	86.65	87.67	87.77
1999	88.60	87.89	88.90	91.30	91.48	88.47	88.10	86.29	84.97	86.68	89.43	86.45
2000	86.06	86.68	87.35	90.57	88.03	88.08	87.29	88.57	85.73	87.32	86.90	87.55
2001	83.49	87.58	85.61	88.58	89.39	88.81	87.84	88.15	85.70	88.26	88.70	86.05
2002	88.03	88.44	88.50	89.72	91.45	88.05	86.77	86.77	84.19	84.08	81.87	81.98
2003	86.21	85.96	87.29	90.67	92.79	86.80	90.80	88.99	90.20	85.32	90.53	88.06
2004	M	80.60	M	M	M	79.70	79.08	78.54	78.59	78.41	74.33	74.65
2005	83.50	83.17	83.04	88.64	88.96	86.84	84.49	M	75.20	82.92	85.64	84.08
2006	85.94	76.07	74.80	77.00	80.24	80.44	77.31	76.55	77.60	77.26	72.73	73.79
2007	82.46	88.07	87.10	88.52	88.96	86.96	84.32	84.90	83.78	83.56	85.34	83.85
2008	84.08	84.82	85.71	87.44	88.61	86.48	83.15	83.85	81.98	83.27	70.78	70.28
2009	82.23	86.06	86.29	86.18	88.21	86.72	85.48	86.06	85.10	83.97	86.36	82.75
2010	81.70	79.12	83.85	86.24	88.26	87.44	82.75	82.86	82.10	86.17	83.00	82.23
2011	82.46	79.38	80.07	80.86	84.92	81.60	78.33	80.76	84.62	85.77	85.28	85.94
2012	84.37	83.33	86.00	88.10	88.85	85.64	84.90	83.33	83.18	84.20	83.84	82.75
2013	81.70	83.88	85.01	85.88	86.06	85.64	82.81	82.75	79.52	82.57	82.46	80.37
2014	81.65	83.24	85.77	86.24	85.71	83.36	84.37	83.45	80.24	82.46	81.56	81.35
2015	82.86	79.83	81.53	85.10	87.22	85.70	84.72	84.90	83.30	83.04	83.54	81.94
2016	80.19	84.70	82.92	87.92	90.18	85.70	84.66	83.39	82.58	84.55	82.94	84.32
2017	83.04	83.56	86.35	85.94	86.87	84.74	83.85	81.82	80.24	83.74	83.84	82.81
2018	82.81	83.56	86.29	87.38	88.15	83.12	85.76	83.15	82.70	80.60	81.20	80.83
2019	81.88	83.49	86.06	86.36	86.52	86.54	84.49	84.08	82.16	80.60	82.88	82.17
2020	82.34	81.47	84.95	88.34	88.38	86.24	84.49	81.99	82.10	84.26	85.58	81.53
2021	82.69	81.11	84.72	86.90	87.63	83.72	82.86	81.30	78.86	81.94	82.16	81.94
2022	81.68	83.56	85.36	86.36	86.41	83.84	82.92	81.82	80.42	81.30	82.34	82.34
2023	81.99	84.01	83.15	86.66	91.86	88.04	85.36	84.55	84.68	81.47	84.14	81.65
2024	81.82	83.08	85.83	87.86	89.77	84.62	84.55	83.39	81.74	84.20	83.60	85.19
2025	83.04	85.87	86.46	87.08	87.74	83.30	83.49	M	M	M	M	M

Average Daily Low Temperature [F]

Year	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
1973	64.57	72.67	69.71	66.33	69.29	60.25	70.00	M	M	M	60.75	61.33
1974	68.17	M	64.29	73.50	M	M	68.00	81.00	68.00	67.00	67.25	63.00
1975	59.00	82.00	M	M	M	M	M	79.00	68.00	M	M	60.00
1976	M	M	63.00	66.00	70.00	73.00	68.00	M	M	M	M	M
1977	M	M	M	M	M	M	M	M	M	M	M	M
1978	M	M	M	M	M	M	M	M	M	M	M	M
1979	M	M	M	M	M	M	M	M	M	M	M	M
1980	M	M	M	M	M	M	M	M	M	M	M	M
1981	M	M	M	M	M	M	M	M	M	M	M	M
1982	M	M	M	M	M	M	M	M	M	M	M	M
1983	M	M	M	M	M	M	M	M	M	M	M	M
1984	M	M	M	M	M	M	M	M	M	M	M	M
1985	M	M	M	M	M	M	M	M	M	M	M	M
1986	M	M	M	M	M	M	M	M	M	M	M	M
1987	M	M	M	M	M	M	M	M	M	M	M	M
1988	M	M	M	M	M	M	M	M	M	M	M	22.67
1989	21.50	21.56	21.42	22.30	23.03	23.67	22.35	22.32	21.63	21.45	21.31	17.88
1990	18.65	19.64	19.90	21.87	22.71	22.83	23.03	21.93	22.80	22.17	20.43	20.55
1991	20.10	20.86	37.23	65.73	69.63	71.23	71.06	71.61	71.17	69.81	67.90	67.06
1992	62.39	60.21	64.97	67.07	70.48	73.45	70.23	68.21	69.83	68.32	66.43	66.71
1993	63.00	63.21	62.71	67.90	71.32	71.47	70.65	71.39	70.67	70.52	69.90	67.52
1994	65.81	67.82	68.13	70.77	72.23	71.66	M	72.00	71.90	70.84	69.83	68.42
1995	66.13	67.71	66.48	70.80	71.61	73.93	73.13	72.47	71.27	70.42	69.63	65.48
1996	64.13	66.61	66.29	69.33	72.29	71.82	71.00	69.55	70.60	70.42	68.53	66.68
1997	63.81	67.82	68.94	68.83	72.32	71.59	71.55	71.90	71.53	69.45	68.57	65.06
1998	63.06	61.46	65.97	67.80	71.47	72.63	71.45	71.29	70.30	70.71	70.10	66.97
1999	63.83	65.54	67.29	70.50	70.16	70.17	70.00	70.13	70.73	69.35	67.97	64.52
2000	66.29	69.18	67.48	71.48	71.32	71.15	70.87	71.17	70.67	71.84	70.13	67.52
2001	62.34	65.38	65.68	72.26	72.12	47.29	36.60	67.17	63.07	60.26	55.29	71.08
2002	67.71	64.04	71.02	71.17	70.19	49.18	44.00	50.66	17.72	39.48	55.79	67.30
2003	57.69	65.14	66.17	68.85	71.45	65.77	63.85	60.26	63.72	62.14	59.27	59.59
2004	M	68.00	M	M	M	77.90	75.96	74.84	77.74	75.84	69.67	66.98
2005	65.39	66.20	65.21	70.22	70.15	68.96	69.92	M	73.40	69.74	68.00	66.72
2006	66.43	69.40	68.80	73.51	77.36	78.55	74.97	74.15	76.40	77.26	69.07	67.92
2007	67.25	66.14	67.54	71.12	69.57	71.30	70.79	69.45	69.32	70.21	67.46	66.90
2008	66.08	66.01	68.23	69.56	70.03	69.80	68.46	68.81	69.74	69.22	69.06	67.52
2009	67.71	67.87	66.14	68.24	69.10	70.58	70.90	70.96	71.84	71.25	68.12	67.77
2010	65.74	54.82	65.45	66.62	68.81	69.14	68.64	70.38	69.38	67.01	65.42	63.24
2011	66.39	70.88	71.73	71.21	74.48	75.20	73.01	72.54	69.26	69.22	66.50	64.75
2012	65.97	67.13	67.48	67.88	68.64	69.62	70.32	70.90	70.34	70.55	68.72	67.01
2013	67.07	65.81	67.54	68.66	69.39	70.70	70.26	70.44	69.80	70.15	68.30	66.90
2014	66.08	67.10	68.06	70.40	71.31	70.58	70.67	70.55	69.32	71.14	68.18	67.25
2015	68.00	65.49	67.77	71.06	71.48	72.08	71.37	71.43	70.82	72.01	71.66	68.99
2016	64.86	67.63	66.72	71.18	72.06	70.88	70.44	70.73	70.58	70.90	69.26	69.05
2017	66.14	67.29	70.21	69.50	70.73	71.30	70.15	71.25	70.46	70.67	69.50	68.17
2018	67.88	68.96	69.51	70.46	71.89	70.52	71.24	70.15	70.28	69.63	67.46	66.72
2019	66.08	67.23	69.16	69.08	69.34	71.78	70.73	71.08	70.22	70.03	69.74	67.83
2020	66.72	67.01	69.97	71.78	70.79	70.76	71.43	71.19	71.48	71.14	70.10	67.25
2021	67.36	65.04	69.92	69.32	71.19	70.82	70.61	70.21	69.26	70.73	68.60	67.54
2022	66.56	66.71	68.12	69.68	68.93	69.14	70.26	70.09	70.10	70.15	68.60	66.61
2023	65.21	67.23	66.32	68.90	73.92	72.74	72.12	72.41	72.62	70.90	71.24	67.59
2024	67.65	66.14	69.16	72.02	74.50	71.30	71.89	71.25	72.02	71.48	70.34	68.81
2025	68.12	68.71	69.97	71.42	72.35	72.02	71.21	M	M	M	M	M

Average Daily Temperature (high+low)/2 [F]

Year	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
1973	71.43	76.00	74.64	76.50	76.36	73.00	78.67	M	M	M	73.88	71.17
1974	75.00	M	74.57	81.50	M	M	74.50	81.00	76.00	74.75	76.25	72.00
1975	70.00	83.00	M	M	M	M	M	81.50	76.00	M	M	68.50
1976	M	M	72.00	76.25	77.00	81.50	76.00	M	M	M	M	M
1977	M	M	M	M	M	M	M	M	M	M	M	M
1978	M	M	M	M	M	M	M	M	M	M	M	M
1979	M	M	M	M	M	M	M	M	M	M	M	M
1980	M	M	M	M	M	M	M	M	M	M	M	M
1981	M	M	M	M	M	M	M	M	M	M	M	M
1982	M	M	M	M	M	M	M	M	M	M	M	M
1983	M	M	M	M	M	M	M	M	M	M	M	M
1984	M	M	M	M	M	M	M	M	M	M	M	M
1985	M	M	M	M	M	M	M	M	M	M	M	M
1986	M	M	M	M	M	M	M	M	M	M	M	M
1987	M	M	M	M	M	M	M	M	M	M	M	M
1988	M	M	M	M	M	M	M	M	M	M	M	25.33
1989	33.94	37.70	35.97	36.85	39.95	44.80	41.73	39.37	41.53	36.05	37.81	28.69
1990	34.42	35.36	34.00	37.42	37.08	42.67	42.39	39.92	39.93	35.98	29.80	32.84
1991	33.37	34.16	50.84	76.63	78.78	78.73	78.52	78.26	77.07	76.55	75.84	75.60
1992	69.44	69.66	75.23	77.52	80.08	81.29	78.77	77.24	77.33	76.66	74.98	75.56
1993	74.11	75.18	75.95	79.03	81.32	79.48	77.35	76.98	75.97	76.84	76.07	75.14
1994	76.35	77.84	78.37	80.58	81.26	80.33	M	79.17	78.84	78.84	79.12	77.55
1995	77.31	79.71	78.48	82.05	82.92	82.78	81.45	80.00	79.18	80.74	80.72	76.10
1996	75.81	77.89	78.21	80.92	83.15	81.95	79.68	78.37	79.37	78.81	79.37	77.69
1997	75.87	80.02	80.40	80.55	84.44	81.78	81.92	81.63	79.47	78.60	78.23	74.90
1998	75.29	73.93	78.06	79.62	81.87	82.48	80.21	79.94	76.70	78.68	78.88	77.37
1999	76.22	76.71	78.10	80.90	80.82	79.32	79.05	78.21	77.85	78.02	78.70	75.48
2000	76.18	77.93	77.42	81.03	79.67	79.62	79.08	79.87	78.20	79.58	78.52	77.53
2001	72.91	76.48	75.65	80.42	80.75	68.05	62.22	77.66	74.39	74.26	71.99	78.56
2002	77.87	76.24	79.76	80.45	80.82	68.62	65.39	68.72	50.96	61.78	68.83	74.64
2003	74.87	75.55	76.73	79.74	82.12	76.24	77.55	73.71	76.56	72.44	74.16	73.83
2004	M	74.30	M	M	M	78.80	77.52	76.14	78.16	77.13	72.00	70.82
2005	74.45	74.69	74.13	79.43	79.55	77.90	77.20	M	74.30	76.33	76.82	75.40
2006	76.19	72.73	71.80	75.26	78.80	79.50	76.14	75.35	77.00	77.26	70.90	70.86
2007	74.85	77.10	77.32	79.82	79.26	79.13	77.55	77.17	76.55	76.88	76.40	75.37
2008	75.08	75.42	76.97	78.50	79.32	78.14	75.81	76.33	75.86	76.25	69.92	68.90
2009	74.97	76.97	76.22	77.21	78.65	78.65	78.19	78.51	78.47	77.61	77.24	75.26
2010	73.72	66.97	74.65	76.43	78.54	78.29	75.69	76.62	75.74	76.59	74.21	72.73
2011	74.42	75.13	75.90	76.04	79.70	78.40	75.67	76.65	76.94	77.49	75.89	75.35
2012	75.17	75.23	76.74	77.99	78.74	77.63	77.61	77.12	76.76	77.38	76.28	74.88
2013	74.39	74.85	76.27	77.27	77.73	78.17	76.54	76.59	74.66	76.36	75.38	73.63
2014	73.86	75.17	76.91	78.32	78.51	76.97	77.52	77.00	74.78	76.80	74.87	74.30
2015	75.43	72.66	74.65	78.08	79.35	78.89	78.05	78.16	77.06	77.52	77.60	75.46
2016	72.53	76.16	74.82	79.55	81.12	78.29	77.55	77.06	76.58	77.73	76.10	76.68
2017	74.59	75.42	78.28	77.72	78.80	78.02	77.00	76.54	75.35	77.20	76.67	75.49
2018	75.35	76.26	77.90	78.92	80.02	76.82	78.50	76.65	76.49	75.11	74.33	73.78
2019	73.98	75.36	77.61	77.72	77.93	79.16	77.61	77.58	76.19	75.32	76.31	75.00
2020	74.53	74.24	77.46	80.06	79.58	78.50	77.96	76.59	76.79	77.70	77.84	74.39
2021	75.03	73.08	77.32	78.11	79.41	77.27	76.74	75.75	74.06	76.33	75.38	74.74
2022	74.12	75.14	76.74	78.02	77.67	76.49	76.59	75.95	75.26	75.72	75.47	74.47
2023	73.60	75.62	74.74	77.78	82.89	80.39	78.74	78.48	78.65	76.19	77.69	74.62
2024	74.74	74.61	77.49	79.94	82.14	77.96	78.22	77.32	76.88	77.84	76.97	77.00
2025	75.58	77.29	78.22	79.25	80.05	77.66	77.35	M	M	M	M	M

Average Relative Humidity [%]

This value is computed via a simple average of available observations weighted by the duration between observations.

Year	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
1973	64.2%	M	65.4%	M	M	M	88.7%	M	M	M	M	M
1974	M	M	66.2%	M	M	M	M	M	M	M	60.6%	M
1975	M	M	M	M	M	M	M	M	M	M	M	M
1976	M	M	M	M	M	M	M	M	M	M	M	M
1977	M	M	M	M	M	M	M	M	M	M	M	M
1978	M	M	M	M	M	M	M	M	M	M	M	M
1979	M	M	M	M	M	M	M	M	M	M	M	M
1980	M	M	M	M	M	M	M	M	M	M	M	M
1981	M	M	M	M	M	M	M	M	M	M	M	M
1982	M	M	M	M	M	M	M	M	M	M	M	M
1983	M	M	M	M	M	M	M	M	M	M	M	M
1984	M	M	M	M	M	M	M	M	M	M	M	M
1985	M	M	M	M	M	M	M	M	M	M	M	M
1986	M	M	M	M	M	M	M	M	M	M	M	M
1987	M	M	M	M	M	M	M	M	M	M	M	M
1988	M	M	M	M	M	M	M	M	M	M	M	M
1989	77.8%	73.1%	71.7%	67.8%	70.8%	78.5%	82.9%	81.3%	81.5%	77.7%	71.4%	65.6%
1990	58.8%	60.0%	52.6%	54.4%	67.5%	75.9%	81.7%	82.8%	86.1%	82.8%	72.6%	71.0%
1991	69.0%	65.3%	59.3%	56.7%	61.7%	68.6%	73.5%	77.3%	78.6%	74.9%	68.7%	64.7%
1992	79.8%	69.9%	63.9%	55.0%	63.8%	68.1%	79.4%	79.5%	81.0%	78.3%	67.1%	64.3%
1993	65.3%	54.3%	50.9%	46.1%	43.3%	72.1%	78.2%	77.1%	77.7%	73.8%	67.7%	59.8%
1994	53.8%	55.8%	49.2%	45.1%	52.8%	71.2%	M	94.7%	76.2%	77.7%	68.3%	61.8%
1995	58.3%	53.1%	53.1%	47.7%	58.1%	73.6%	74.3%	80.4%	81.5%	65.9%	64.8%	60.5%
1996	56.4%	55.9%	51.4%	42.2%	51.5%	72.9%	78.0%	79.3%	79.5%	79.6%	63.2%	61.9%
1997	54.1%	44.5%	51.6%	53.1%	50.6%	74.6%	72.6%	73.8%	79.1%	73.1%	66.8%	65.8%
1998	52.8%	54.2%	56.9%	57.4%	56.7%	68.6%	77.3%	78.1%	85.2%	79.5%	72.8%	64.5%
1999	46.7%	53.1%	47.2%	45.5%	50.9%	73.1%	75.7%	78.8%	81.2%	72.2%	54.8%	47.8%
2000	52.1%	49.3%	45.3%	41.2%	54.7%	76.5%	75.3%	74.4%	76.0%	70.9%	63.4%	57.0%
2001	58.7%	47.9%	54.7%	43.3%	50.4%	64.6%	70.4%	73.8%	72.3%	62.1%	50.9%	49.7%
2002	49.8%	47.0%	48.6%	46.6%	49.2%	69.5%	75.0%	72.9%	80.9%	76.5%	70.0%	58.9%
2003	60.8%	53.0%	50.9%	56.5%	47.0%	80.5%	76.7%	78.4%	81.9%	76.3%	67.7%	53.7%
2004	60.8%	49.0%	45.6%	51.5%	54.4%	77.1%	76.7%	75.1%	82.3%	80.1%	60.5%	58.1%
2005	59.3%	61.3%	51.7%	48.0%	52.6%	74.7%	81.7%	79.5%	81.4%	80.5%	65.4%	60.7%
2006	60.6%	50.0%	55.8%	58.5%	59.5%	77.1%	80.0%	81.3%	85.9%	81.5%	72.0%	57.2%
2007	64.2%	55.5%	48.6%	48.0%	53.9%	75.0%	79.5%	84.2%	84.0%	79.1%	68.0%	66.8%
2008	64.7%	57.9%	50.8%	55.5%	60.9%	74.9%	80.7%	80.8%	84.9%	78.2%	73.0%	61.3%
2009	69.2%	60.9%	63.8%	58.4%	63.1%	66.4%	69.6%	74.6%	75.0%	75.6%	65.9%	67.6%
2010	64.4%	74.4%	60.1%	52.6%	55.9%	69.7%	80.6%	82.3%	83.9%	70.9%	62.4%	64.7%
2011	55.1%	61.0%	56.1%	55.2%	57.9%	68.8%	79.4%	78.0%	75.0%	75.4%	68.4%	69.6%
2012	63.2%	70.4%	57.5%	54.0%	60.8%	66.9%	69.4%	69.0%	74.7%	73.4%	70.9%	68.2%
2013	64.3%	62.2%	48.2%	47.7%	52.3%	70.6%	78.1%	80.8%	86.5%	79.1%	78.5%	74.9%
2014	68.7%	61.6%	50.3%	50.1%	65.9%	81.9%	78.0%	78.6%	84.5%	81.0%	70.3%	63.7%
2015	57.9%	65.2%	57.3%	54.9%	60.5%	76.3%	75.7%	78.7%	83.9%	81.0%	80.5%	70.3%
2016	59.4%	55.2%	52.5%	44.5%	61.0%	74.6%	79.5%	81.2%	84.9%	78.3%	71.3%	64.0%
2017	57.4%	53.8%	53.6%	42.1%	58.7%	84.4%	82.0%	87.4%	90.3%	79.8%	75.2%	60.0%
2018	55.9%	61.8%	51.9%	47.2%	67.8%	83.1%	76.6%	83.0%	85.8%	86.4%	74.5%	65.8%
2019	62.8%	61.1%	52.8%	46.0%	61.2%	78.3%	80.1%	83.9%	84.5%	85.9%	80.6%	71.4%
2020	63.8%	67.3%	65.1%	46.1%	49.3%	74.5%	80.8%	82.0%	80.5%	74.3%	64.3%	63.4%
2021	58.6%	61.6%	50.5%	47.5%	53.3%	76.6%	81.0%	84.1%	84.2%	83.5%	68.2%	69.6%
2022	67.4%	59.5%	42.4%	55.0%	62.0%	80.9%	85.6%	86.5%	88.8%	85.7%	80.5%	70.0%
2023	64.7%	57.8%	59.9%	59.0%	65.5%	71.5%	81.1%	82.0%	83.5%	84.0%	76.6%	70.9%
2024	65.9%	68.3%	52.0%	51.8%	49.4%	75.4%	81.3%	82.6%	83.9%	77.1%	79.8%	64.6%
2025	63.6%	64.2%	52.0%	49.6%	69.5%	83.5%	81.9%	M	M	M	M	M