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 (USC00102260) 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
2009	M	0.47	1.18	1.90	0.93	0.00	0.80	1.14	0.38	1.58	0.63	2.41
2010	15.05	3.66	26.38	29.73	22.00	24.68	3.98	9.01	1.46	13.09	11.80	4.56
2011	0.28	1.80	2.52	1.60	2.59	0.58	0.34	0.20	0.14	2.73	0.20	0.12
2012	1.63	0.71	3.57	0.34	0.00	M	0.00	0.53	0.36	0.79	3.89	4.57
2013	4.64	1.58	1.24	0.72	1.00	0.58	0.21	0.18	1.19	2.19	0.85	0.02
2014	0.35	5.89	7.12	1.83	1.38	0.30	2.14	3.92	2.90	0.10	1.14	2.33
2015	1.13	1.01	0.66	0.86	2.64	0.13	0.96	0.66	1.50	0.95	1.42	1.77
2016	1.52	0.17	0.94	1.19	2.21	0.02	0.00	0.04	2.21	3.26	0.23	2.17
2017	5.38	4.11	1.35	1.32	1.26	0.29	0.01	0.07	1.31	0.45	1.24	0.13
2018	0.66	2.26	2.80	0.89	1.66	0.53	0.03	0.33	0.06	1.41	1.49	0.63
2019	1.85	5.64	1.14	1.78	4.15	0.34	0.17	0.18	1.23	0.88	1.90	0.47
2020	0.50	0.00	0.84	0.76	0.66	0.62	0.03	0.50	0.15	M	M	M
2021	M	M	M	0.00	0.48	0.08	0.86	0.69	0.12	1.45	0.31	1.42
2022	0.49	0.47	0.54	0.85	1.22	0.39	0.04	0.28	0.35	0.00	0.00	2.68
2023	0.00	0.00	1.40	0.91	0.81	0.76	0.01	0.63	1.08	1.35	0.82	0.95
2024	1.64	2.56	1.38	0.52	0.47	0.07	0.02	0.34	0.56	0.20	0.68	1.45
2025	0.44	1.60	1.63	0.58	0.80	0.03	0.12	M	M	M	M	M
NCEI Climatology	1.96	1.50	1.13	1.13	1.62	1.21	0.43	0.65	0.83	1.29	1.12	2.19

Average Wind Speed [MPH]

Year	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
2009	M	11.3	12.5	10.9	15.1	14.4	11.8	10.4	10.8	10.3	10.4	8.9
2010	10.5	8.4	10.7	12.4	12.9	13.0	12.9	12.6	8.9	4.2	4.5	6.4
2011	4.7	4.4	9.5	7.9	11.7	12.5	10.4	9.3	10.4	10.9	11.8	10.4
2012	10.8	10.9	12.4	13.8	19.7	M	12.7	11.7	10.1	11.3	9.8	10.5
2013	7.0	9.2	10.5	13.9	12.3	13.4	12.4	11.3	12.9	9.8	10.5	8.0
2014	8.1	13.9	7.7	6.3	7.5	10.7	6.8	2.6	0.0	7.0	10.7	7.1
2015	7.4	10.7	11.3	11.3	8.7	11.3	11.3	11.8	11.2	10.0	9.7	9.2
2016	9.1	10.8	5.0	0.0	3.3	12.9	13.1	13.0	11.5	11.6	9.5	7.4
2017	11.5	13.3	12.5	11.6	7.9	12.3	10.7	10.0	9.5	9.9	9.2	8.1
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	10.4	11.8	11.6	11.3	12.8	11.8	M	M	M	M	M
NCEI Climatology	M	M	M	M	M	M	M	M	M	M	M	M

Average Daily High Temperature [F]

Year	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
2009	M	26.93	35.51	47.67	54.48	79.70	77.58	76.52	74.45	44.99	38.25	22.36
2010	27.94	27.53	37.79	47.79	51.43	65.00	78.95	76.34	70.56	57.61	34.51	29.26
2011	23.59	26.16	35.54	42.48	54.01	63.76	79.51	80.87	75.03	55.73	36.86	31.87
2012	31.97	31.98	43.13	56.70	47.66	M	89.64	85.09	74.22	55.14	42.99	30.24
2013	24.14	30.68	43.35	50.67	63.36	75.56	87.47	84.68	69.46	53.68	43.51	25.73
2014	34.83	35.07	46.00	52.80	64.66	71.04	86.95	75.79	71.82	61.37	38.77	34.42
2015	31.99	43.92	53.01	54.10	64.38	80.19	78.71	80.80	72.96	62.49	36.50	28.09
2016	28.16	35.69	44.46	58.69	63.05	77.58	81.60	81.51	67.12	55.17	48.50	23.64
2017	23.73	35.66	46.52	49.99	63.17	73.90	87.57	82.82	68.32	52.99	43.53	32.84
2018	36.38	33.41	39.72	53.68	65.54	72.30	86.42	84.94	71.07	55.26	39.53	28.95
2019	29.30	27.45	37.16	52.53	59.08	69.67	81.89	82.40	67.74	48.21	44.34	30.05
2020	30.88	32.32	42.99	54.15	64.10	71.14	82.83	83.97	77.83	M	M	M
2021	M	M	M	73.58	61.79	81.52	88.17	78.03	72.67	54.59	43.16	30.28
2022	25.71	26.30	43.06	46.25	55.26	70.01	86.61	85.50	76.90	64.58	25.81	26.44
2023	19.68	13.82	30.32	43.95	63.97	67.56	84.29	78.79	69.09	55.42	40.99	35.21
2024	28.96	33.43	40.36	52.68	58.55	75.16	84.98	81.76	73.80	61.56	37.93	35.63
2025	26.25	30.91	42.64	53.97	64.45	69.86	83.93	M	M	M	M	M
NCEI Climatology	24.79	29.23	38.99	50.20	60.69	70.69	81.50	79.80	69.30	53.60	36.20	24.09

Average Daily Low Temperature [F]

Year	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
2009	M	17.82	24.13	33.36	40.18	65.03	59.54	58.77	57.68	33.42	24.36	12.29
2010	18.95	17.08	25.13	31.69	36.35	48.48	58.49	56.07	51.34	41.96	22.35	18.44
2011	12.86	14.21	23.63	28.04	37.05	46.01	58.90	60.87	54.27	40.26	24.43	18.80
2012	19.98	19.80	30.01	37.66	38.12	M	69.84	64.61	55.18	39.41	31.24	19.57
2013	12.27	19.03	28.09	34.20	45.52	54.71	66.04	65.36	51.94	36.99	29.26	13.27
2014	21.82	22.05	30.39	34.85	46.63	52.49	65.21	58.23	52.99	43.15	24.78	25.15
2015	20.97	28.97	35.19	36.51	45.87	59.46	58.46	59.31	53.90	46.38	23.70	17.77
2016	18.02	22.80	30.55	40.70	44.84	49.75	48.08	51.91	49.54	40.98	33.94	14.52
2017	11.07	22.92	31.96	33.88	43.78	53.89	68.28	62.63	50.95	36.19	30.45	19.04
2018	24.43	20.63	26.93	36.07	47.24	51.99	66.03	65.75	53.56	40.12	26.80	19.78
2019	19.31	17.02	24.68	37.16	43.74	52.07	62.26	62.60	50.59	29.46	28.97	19.65
2020	19.45	17.51	28.69	35.64	43.79	51.00	60.92	64.28	55.50	M	M	M
2021	M	M	M	54.32	41.90	57.42	66.31	57.36	50.89	37.65	28.42	18.31
2022	11.47	11.27	26.98	28.43	38.06	49.22	64.31	62.26	54.46	45.18	11.84	11.91
2023	9.32	5.45	20.33	27.86	46.61	49.17	64.78	59.93	50.65	39.28	27.88	22.66
2024	17.64	21.34	24.03	34.49	38.50	54.42	63.22	58.51	52.19	41.71	24.04	23.08
2025	11.93	16.73	27.71	34.24	44.87	52.08	63.74	M	M	M	M	M
NCEI Climatology	7.10	10.02	18.30	25.51	33.00	40.59	49.30	47.01	38.40	27.09	15.79	7.79

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

Year	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
2009	M	22.38	29.82	40.51	47.33	72.37	68.56	67.65	66.07	39.21	31.31	17.32
2010	23.44	22.31	31.46	39.74	43.89	56.74	68.72	66.20	60.95	49.78	28.43	23.85
2011	18.23	20.18	29.58	35.26	45.53	54.89	69.21	70.87	64.65	47.99	30.64	25.34
2012	25.98	25.89	36.57	47.18	42.89	M	79.74	74.85	64.70	47.28	37.12	24.90
2013	18.20	24.85	35.72	42.44	54.44	65.14	76.76	75.02	60.70	45.33	36.39	19.50
2014	28.32	28.56	38.20	43.82	55.64	61.77	76.08	67.01	62.41	52.26	31.77	29.78
2015	26.48	36.45	44.10	45.31	55.13	69.82	68.59	70.06	63.43	54.44	30.10	22.93
2016	23.09	29.24	37.51	49.69	53.95	63.67	64.84	66.71	58.33	48.08	41.22	19.08
2017	17.40	29.29	39.24	41.93	53.48	63.90	77.93	72.73	59.63	44.59	36.99	25.94
2018	30.41	27.02	33.32	44.88	56.39	62.15	76.22	75.34	62.32	47.69	33.17	24.36
2019	24.30	22.23	30.92	44.85	51.41	60.87	72.08	72.50	59.16	38.83	36.65	24.85
2020	25.17	24.91	35.84	44.89	53.95	61.07	71.87	74.13	66.66	M	M	M
2021	M	M	M	63.95	51.84	69.47	77.24	67.70	61.78	46.12	35.79	24.29
2022	18.59	18.79	35.02	37.34	46.66	59.62	75.46	73.88	65.68	54.88	18.82	19.18
2023	14.50	9.64	25.33	35.90	55.29	58.37	74.53	69.36	59.87	47.35	34.44	28.94
2024	23.30	27.39	32.19	43.59	48.53	64.79	74.10	70.13	63.00	51.64	30.99	29.35
2025	19.09	23.82	35.18	44.10	54.66	60.97	73.84	M	M	M	M	M
NCEI Climatology	15.95	19.63	28.65	37.85	46.85	55.64	65.40	63.40	53.85	40.35	26.00	15.94

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
2009	M	79.8%	67.9%	60.8%	50.0%	28.9%	29.8%	35.6%	27.2%	70.5%	68.7%	83.5%
2010	85.0%	81.5%	71.2%	53.2%	51.8%	52.1%	28.5%	31.2%	28.5%	50.8%	75.7%	87.2%
2011	86.8%	74.6%	79.8%	60.4%	58.7%	46.4%	27.5%	24.9%	30.4%	62.7%	68.6%	72.3%
2012	77.7%	79.5%	73.2%	45.6%	67.7%	M	17.1%	23.6%	31.3%	54.4%	77.3%	83.9%
2013	85.8%	82.5%	63.1%	52.3%	45.8%	36.0%	25.8%	25.5%	53.3%	56.7%	64.9%	85.2%
2014	74.4%	76.6%	61.5%	50.1%	38.8%	36.0%	26.3%	52.2%	42.5%	46.8%	76.1%	85.8%
2015	88.3%	66.7%	47.5%	46.9%	47.3%	27.7%	34.0%	27.0%	33.1%	55.5%	74.3%	84.0%
2016	88.5%	74.2%	66.4%	53.5%	49.4%	33.2%	26.9%	22.1%	51.5%	67.0%	64.2%	86.0%
2017	80.8%	83.4%	70.4%	58.7%	52.2%	42.7%	23.6%	28.8%	47.9%	52.6%	75.2%	80.9%
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	58.4%	65.3%	45.3%	45.4%	25.5%	26.2%	M	M	M	M	M