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
1996	M	M	M	0.00	0.00	0.00	M	M	M	M	M	M
1997	M	M	M	M	M	M	M	M	M	M	M	M
1998	M	M	M	M	M	M	M	M	M	M	M	0.00
1999	0.00	0.00	0.00	0.00	0.00	0.00	0.00	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	0.00	0.00	0.00	0.00	0.00
2002	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00
2003	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	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	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00
2008	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00
2009	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00
2010	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00
2011	0.00	0.00	0.00	0.00	0.00	0.00	0.00	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
1996	M	M	M	8.8	8.5	8.4	M	M	M	M	M	M
1997	M	M	M	M	M	M	M	M	M	M	M	M
1998	M	M	M	M	M	M	M	M	M	M	M	6.5
1999	8.4	9.9	9.6	9.3	10.8	11.6	8.9	10.6	9.5	13.5	12.1	12.8
2000	8.7	11.5	10.1	9.4	10.7	11.4	10.9	8.0	12.6	10.0	7.6	11.7
2001	9.0	8.5	8.6	10.8	11.5	10.3	9.3	9.0	10.0	10.7	9.4	9.8
2002	7.1	8.4	9.2	9.8	10.5	10.1	9.4	11.3	9.2	10.3	9.1	9.9
2003	10.1	10.4	8.4	10.7	9.3	9.6	8.8	9.8	7.9	8.7	11.4	9.2
2004	10.5	9.8	11.5	10.8	10.0	9.1	10.3	9.9	10.9	10.7	11.4	8.1
2005	10.5	8.7	8.8	9.9	9.5	11.0	10.8	8.4	10.0	9.4	12.2	9.7
2006	8.6	10.5	11.1	9.6	10.8	10.3	8.0	10.4	9.0	12.0	11.5	9.4
2007	11.0	11.4	12.3	9.4	12.0	10.4	10.1	9.8	11.9	10.3	11.5	9.3
2008	10.1	9.0	12.8	10.6	9.4	9.6	8.8	9.5	9.1	10.6	8.1	9.5
2009	7.7	8.5	8.9	8.5	13.3	8.9	8.5	10.5	11.2	9.0	10.9	10.4
2010	9.0	9.0	7.8	9.5	8.7	8.8	9.3	8.4	11.0	12.1	8.7	8.5
2011	6.9	11.0	7.9	10.8	9.7	9.7	9.2	9.6	11.1	7.6	10.6	8.7
2012	11.9	5.4	10.9	9.6	11.4	11.7	9.3	10.1	9.7	9.8	11.0	11.0
2013	11.9	8.2	9.2	11.4	10.4	9.1	8.5	8.7	10.1	10.2	11.6	8.9
2014	11.6	9.5	8.0	10.1	8.2	9.2	10.4	8.1	10.4	9.9	9.8	8.5
2015	9.6	8.8	9.9	11.5	8.4	9.5	9.0	9.6	9.7	10.0	10.7	8.7
2016	9.5	9.3	9.4	10.3	9.0	9.9	9.1	8.0	10.1	8.7	10.7	8.2
2017	11.1	10.3	10.4	9.9	10.3	9.5	9.9	8.7	6.9	11.2	12.4	8.8
2018	8.5	11.0	6.5	9.0	10.5	9.7	9.5	8.6	10.2	9.5	10.1	9.8
2019	8.1	12.3	12.9	9.9	8.9	10.6	9.7	9.6	9.6	9.5	9.3	9.8
2020	8.4	10.1	9.6	10.4	9.9	8.6	8.0	8.8	12.1	9.8	11.0	8.4
2021	7.9	6.4	10.1	8.3	10.6	8.2	8.9	10.7	10.6	7.1	10.8	9.9
2022	10.6	9.7	9.3	10.6	8.9	10.2	7.6	8.2	10.7	9.6	11.3	9.3
2023	7.7	7.7	9.2	9.8	10.1	8.8	7.2	M	13.2	7.3	9.2	M
2024	M	9.9	9.7	11.2	10.0	11.1	8.8	9.6	8.3	10.5	7.4	11.1
2025	9.0	M	7.4	10.3	8.5	8.2	9.0	M	M	M	M	M

Average Daily High Temperature [F]

Year	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
1996	M	M	M	-1.21	7.82	23.00	M	M	M	M	M	M
1997	M	M	M	M	M	M	M	M	M	M	M	M
1998	M	M	M	M	M	M	M	M	M	M	M	-15.00
1999	-0.18	19.58	21.78	40.86	58.73	67.68	70.82	69.68	62.29	40.75	32.16	16.00
2000	2.07	7.37	31.43	34.34	51.17	62.95	69.08	66.47	54.90	48.43	34.08	7.09
2001	9.19	5.90	24.72	41.28	63.73	64.83	66.67	70.40	59.86	46.80	35.32	25.02
2002	4.79	9.13	16.77	38.65	47.33	63.39	69.94	68.07	61.28	36.80	26.17	16.23
2003	1.95	2.37	15.69	30.07	60.33	65.45	67.21	70.58	64.08	44.12	31.84	19.43
2004	M	M	M	M	M	54.32	63.05	56.45	64.04	48.92	31.18	5.90
2005	3.06	14.08	18.07	42.94	58.27	68.62	73.88	M	M	48.89	29.85	11.55
2006	15.22	9.68	18.89	42.00	57.95	67.86	68.00	69.80	59.60	39.80	32.00	22.23
2007	12.30	2.54	18.22	38.37	60.11	67.37	69.62	65.87	57.99	49.72	28.44	10.24
2008	13.33	8.24	18.64	41.13	48.47	59.27	68.37	71.13	62.09	49.62	30.63	7.92
2009	-2.04	11.47	22.25	36.36	45.94	66.51	67.70	64.79	60.34	44.50	39.56	13.58
2010	12.35	13.55	29.98	41.75	58.16	62.29	72.36	73.40	53.93	44.39	35.25	22.98
2011	4.35	10.24	25.03	37.80	57.69	66.87	70.41	65.97	59.36	44.74	33.80	10.59
2012	9.02	17.42	32.19	36.25	55.89	71.11	69.86	62.18	63.14	46.95	31.33	17.33
2013	4.28	8.19	28.98	34.97	48.33	61.32	70.70	65.97	56.30	48.61	28.87	1.31
2014	1.15	6.37	13.79	35.18	52.77	67.45	65.47	68.50	57.06	49.20	23.07	11.30
2015	-0.40	-5.80	19.07	37.03	52.97	65.16	70.84	67.48	65.12	43.70	35.89	25.56
2016	8.95	7.01	21.73	27.46	55.47	59.42	68.76	71.00	62.06	48.86	35.15	19.12
2017	12.80	12.67	14.90	34.37	49.62	60.17	67.03	64.25	60.68	51.60	27.07	8.75
2018	4.53	7.07	22.40	32.30	49.86	64.26	75.62	66.82	60.17	37.81	21.61	16.91
2019	4.10	7.25	16.83	34.70	47.53	67.64	72.60	69.73	59.52	47.41	26.05	13.10
2020	11.41	9.86	23.97	30.41	50.47	60.04	75.51	65.94	56.87	39.10	30.11	21.67
2021	15.35	7.44	31.40	44.60	54.28	67.24	68.09	70.66	60.80	54.09	30.94	8.37
2022	-2.35	5.81	21.48	36.20	58.10	67.06	65.60	68.09	61.37	53.40	29.30	13.28
2023	12.05	10.04	16.19	34.35	53.00	71.51	73.24	M	57.20	46.40	39.80	M
2024	M	42.80	12.92	44.45	57.34	71.36	67.68	66.95	65.60	44.60	36.50	21.20
2025	11.00	M	18.89	29.23	64.14	64.85	67.03	M	M	M	M	M

Average Daily Low Temperature [F]

Year	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
1996	M	M	M	-6.79	2.14	20.00	M	M	M	M	M	M
1997	M	M	M	M	M	M	M	M	M	M	M	M
1998	M	M	M	M	M	M	M	M	M	M	M	-26.50
1999	-12.76	5.58	12.17	29.71	46.77	56.84	60.18	58.41	52.71	34.75	26.60	9.14
2000	-6.59	-3.49	22.14	24.52	41.32	52.20	58.52	56.73	47.57	38.00	26.08	-0.68
2001	0.74	-4.30	12.96	27.76	51.40	51.87	56.80	60.43	47.98	38.93	29.02	19.33
2002	-6.35	-3.77	2.78	27.22	36.87	50.07	57.28	56.77	50.76	31.76	18.54	6.66
2003	-7.76	-10.83	2.21	19.97	46.77	51.35	56.41	59.79	52.70	36.93	26.74	11.43
2004	M	M	M	M	M	52.52	61.70	55.55	63.68	48.56	30.69	5.68
2005	-10.44	1.56	7.87	32.22	48.40	57.48	63.57	M	M	40.45	22.79	2.91
2006	4.28	8.42	16.83	39.00	56.00	66.06	67.20	68.90	59.00	39.80	32.00	21.71
2007	3.77	-9.89	3.91	29.34	47.10	56.15	58.49	54.84	48.95	40.50	20.74	0.42
2008	2.88	-7.78	3.84	29.69	38.16	50.34	58.43	58.46	52.12	40.47	24.20	-2.65
2009	-14.78	-2.23	5.07	23.52	35.45	55.53	58.05	56.05	49.21	35.43	32.79	5.53
2010	5.45	6.04	17.23	32.97	47.14	50.94	61.69	62.41	47.87	38.07	26.97	17.54
2011	-7.38	-4.18	11.35	26.33	45.44	55.31	60.32	57.93	50.07	37.40	28.40	1.68
2012	-1.58	5.81	19.40	25.45	45.34	58.43	58.58	55.29	50.45	37.54	25.13	9.50
2013	-4.72	-4.00	18.75	25.19	38.47	51.50	58.81	56.41	46.58	40.75	22.72	-8.11
2014	-8.22	-3.50	-0.88	23.62	43.15	56.44	56.27	57.42	47.12	40.20	15.01	3.34
2015	-9.98	-19.09	3.60	25.47	40.19	55.47	59.48	58.40	53.46	34.77	29.19	16.77
2016	0.64	-3.52	8.00	17.60	43.55	48.41	57.48	60.93	52.34	38.16	30.74	12.01
2017	4.85	1.63	1.85	25.13	40.17	51.64	56.92	54.57	51.08	41.53	20.26	2.60
2018	-4.31	-5.53	10.40	21.35	38.26	51.30	62.46	53.95	48.75	30.85	15.72	9.29
2019	-8.28	-0.40	6.54	25.70	38.33	57.74	60.67	59.90	48.57	39.70	20.26	2.71
2020	3.42	-0.94	11.44	21.73	40.30	49.91	65.73	55.49	47.71	32.30	26.69	13.62
2021	10.40	-2.71	16.88	32.25	42.12	53.51	57.96	61.74	52.36	42.64	26.68	0.65
2022	-14.50	-7.96	9.85	27.71	47.97	58.22	57.29	59.43	49.05	41.80	24.80	2.66
2023	1.70	-2.29	6.64	22.86	44.10	59.76	59.82	M	48.20	40.10	33.80	M
2024	M	37.40	5.72	33.65	46.95	62.84	58.68	57.20	56.00	40.33	33.08	14.00
2025	3.20	M	5.77	21.34	52.31	54.95	58.72	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
1996	M	M	M	-4.00	4.98	21.50	M	M	M	M	M	M
1997	M	M	M	M	M	M	M	M	M	M	M	M
1998	M	M	M	M	M	M	M	M	M	M	M	-20.75
1999	-6.47	12.58	16.97	35.29	52.75	62.26	65.50	64.05	57.50	37.75	29.38	12.57
2000	-2.26	1.94	26.79	29.43	46.24	57.58	63.80	61.60	51.24	43.21	30.08	3.20
2001	4.97	0.80	18.84	34.52	57.57	58.35	61.73	65.41	53.92	42.87	32.17	22.17
2002	-0.78	2.67	9.78	32.93	42.10	56.73	63.61	62.42	56.02	34.28	22.35	11.44
2003	-2.91	-4.23	8.95	25.02	53.55	58.40	61.81	65.19	58.39	40.52	29.29	15.43
2004	M	M	M	M	M	53.42	62.38	56.00	63.86	48.74	30.94	5.79
2005	-3.69	7.82	12.97	37.58	53.33	63.05	68.73	M	M	44.67	26.32	7.23
2006	9.75	9.05	17.86	40.50	56.97	66.96	67.60	69.35	59.30	39.80	32.00	21.97
2007	8.03	-3.68	11.06	33.85	53.61	61.76	64.06	60.36	53.47	45.11	24.59	5.33
2008	8.10	0.23	11.24	35.41	43.31	54.81	63.40	64.80	57.11	45.04	27.41	2.64
2009	-8.41	4.62	13.66	29.94	40.69	61.02	62.87	60.42	54.78	39.97	36.18	9.56
2010	8.90	9.79	23.60	37.36	52.65	56.61	67.03	67.91	50.90	41.23	31.11	20.26
2011	-1.52	3.03	18.19	32.07	51.56	61.09	65.36	61.95	54.72	41.07	31.10	6.14
2012	3.72	11.62	25.80	30.85	50.61	64.77	64.22	58.74	56.80	42.25	28.23	13.41
2013	-0.22	2.10	23.86	30.08	43.40	56.41	64.75	61.19	51.44	44.68	25.79	-3.40
2014	-3.53	1.44	6.45	29.40	47.96	61.94	60.87	62.96	52.09	44.70	19.04	7.32
2015	-5.19	-12.44	11.33	31.25	46.58	60.32	65.16	62.94	59.29	39.23	32.54	21.17
2016	4.79	1.75	14.87	22.53	49.51	53.91	63.12	65.97	57.20	43.51	32.94	15.56
2017	8.83	7.15	8.38	29.75	44.90	55.91	61.98	59.41	55.88	46.57	23.67	5.67
2018	0.11	0.77	16.40	26.83	44.06	57.78	69.04	60.38	54.46	34.33	18.66	13.10
2019	-2.09	3.43	11.69	30.20	42.93	62.69	66.63	64.82	54.05	43.56	23.16	7.90
2020	7.41	4.46	17.70	26.07	45.38	54.97	70.62	60.71	52.29	35.70	28.40	17.65
2021	12.88	2.36	24.14	38.42	48.20	60.37	63.03	66.20	56.58	48.36	28.81	4.51
2022	-8.43	-1.08	15.66	31.96	53.04	62.64	61.44	63.76	55.21	47.60	27.05	7.97
2023	6.88	3.88	11.42	28.61	48.55	65.63	66.53	M	52.70	43.25	36.80	M
2024	M	40.10	9.32	39.05	52.15	67.10	63.18	62.07	60.80	42.46	34.79	17.60
2025	7.10	M	12.33	25.28	58.23	59.90	62.88	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
1996	M	M	M	75.6%	76.2%	53.8%	M	M	M	M	M	M
1997	M	M	M	M	M	M	M	M	M	M	M	M
1998	M	M	M	M	M	M	M	M	M	M	M	67.6%
1999	66.5%	69.5%	68.0%	69.6%	65.8%	69.7%	77.2%	71.0%	82.0%	77.8%	79.0%	76.5%
2000	71.7%	67.7%	72.8%	68.5%	74.6%	66.0%	69.5%	76.7%	78.9%	74.9%	77.4%	72.6%
2001	69.4%	66.1%	69.3%	67.9%	59.5%	70.0%	75.6%	76.5%	75.4%	81.9%	79.8%	77.7%
2002	67.2%	70.8%	70.0%	73.4%	69.0%	66.1%	75.8%	74.2%	76.3%	84.2%	79.6%	74.7%
2003	68.6%	66.7%	64.0%	70.5%	57.5%	65.3%	74.8%	76.3%	78.1%	77.7%	79.9%	79.0%
2004	72.0%	75.1%	70.9%	66.9%	69.6%	75.9%	68.9%	80.8%	77.4%	75.5%	84.7%	72.1%
2005	68.1%	72.0%	71.1%	68.1%	62.9%	68.4%	66.9%	72.2%	77.7%	84.2%	80.6%	76.0%
2006	75.9%	72.4%	76.9%	69.5%	63.1%	65.0%	65.2%	76.0%	72.1%	79.8%	81.1%	82.0%
2007	80.4%	73.3%	76.9%	77.5%	57.3%	61.5%	72.5%	76.7%	80.5%	81.8%	80.7%	78.1%
2008	80.5%	73.7%	69.6%	68.9%	76.6%	82.4%	76.4%	74.6%	73.4%	82.8%	82.5%	79.4%
2009	74.0%	77.4%	72.3%	75.1%	74.6%	61.5%	77.2%	77.4%	81.1%	79.2%	77.2%	82.4%
2010	82.5%	79.0%	68.9%	69.6%	63.9%	66.3%	69.6%	69.8%	79.7%	79.6%	78.1%	83.2%
2011	72.0%	69.1%	74.9%	74.7%	60.7%	63.9%	66.1%	76.3%	77.3%	77.1%	81.4%	77.6%
2012	78.9%	76.1%	77.6%	75.9%	70.6%	64.6%	73.9%	79.1%	72.5%	80.4%	83.6%	82.8%
2013	76.5%	74.2%	78.2%	77.6%	69.9%	64.6%	66.9%	86.6%	79.5%	82.9%	82.6%	74.0%
2014	72.7%	69.6%	63.1%	67.6%	68.6%	65.7%	77.0%	76.0%	74.3%	81.9%	79.6%	79.8%
2015	72.2%	67.3%	66.2%	66.1%	70.1%	63.6%	70.9%	81.9%	76.3%	79.4%	84.6%	83.8%
2016	78.0%	73.7%	65.9%	65.8%	67.1%	76.6%	76.1%	74.5%	76.7%	80.4%	85.2%	82.7%
2017	80.5%	77.3%	61.0%	67.6%	72.4%	73.3%	68.2%	75.9%	82.9%	79.5%	81.2%	80.9%
2018	77.7%	73.4%	75.2%	61.0%	65.4%	64.0%	70.7%	77.4%	75.5%	85.2%	85.2%	84.0%
2019	79.4%	76.9%	72.7%	75.4%	67.6%	65.2%	71.6%	76.0%	77.5%	82.4%	85.6%	83.2%
2020	81.3%	78.1%	70.0%	71.7%	63.1%	73.1%	75.7%	80.1%	79.8%	85.9%	88.1%	85.6%
2021	85.3%	77.3%	64.2%	63.9%	69.0%	67.4%	69.2%	76.4%	85.4%	87.1%	89.3%	78.6%
2022	71.8%	67.3%	70.5%	66.2%	63.6%	69.3%	75.0%	69.6%	72.6%	79.1%	81.4%	77.9%
2023	75.6%	71.8%	73.0%	63.3%	66.7%	55.6%	70.0%	M	71.6%	90.7%	74.7%	M
2024	M	70.2%	72.8%	62.9%	69.1%	68.6%	77.6%	74.6%	84.3%	88.7%	85.1%	86.5%
2025	82.6%	M	69.3%	73.3%	67.7%	73.3%	66.2%	M	M	M	M	M