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 (USC00502587) 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
2014	M	M	M	M	0.25	1.41	0.35	3.05	5.91	1.94	3.31	1.46
2015	0.94	0.45	1.26	0.62	3.70	0.57	3.01	1.80	1.32	3.55	1.66	1.72
2016	0.45	0.69	0.59	1.58	0.59	1.82	0.43	2.16	4.71	4.73	0.86	3.18
2017	1.21	0.75	M	1.91	1.81	0.34	1.52	0.37	3.11	5.54	1.42	2.52
2018	0.24	2.82	2.28	1.51	1.48	2.08	4.10	5.35	3.46	2.80	3.34	2.74
2019	2.36	1.63	0.72	1.28	2.13	4.07	1.14	3.44	4.91	3.31	2.52	3.17
2020	0.73	3.40	2.03	1.82	0.53	1.20	1.59	2.27	2.92	2.65	4.07	3.08
2021	1.20	3.46	0.69	1.43	2.76	3.43	1.43	3.99	1.02	M	M	1.38
2022	2.35	2.95	1.40	3.51	1.10	1.66	1.60	5.33	1.18	2.26	4.56	5.81
2023	4.36	4.15	3.22	M	M	M	M	M	M	M	M	M
2024	0.07	2.22	1.20	2.33	1.73	1.17	1.93	5.72	M	M	M	M
2025	M	M	M	M	M	M	M	M	M	M	M	M
NCEI Climatology	6.79	5.34	4.65	3.47	4.20	2.52	2.30	2.86	5.73	7.89	6.66	7.88

Average Wind Speed [MPH]

Year	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
2014	M	M	M	M	16.5	13.1	11.4	12.3	15.6	21.3	20.8	14.3
2015	18.1	16.8	15.3	19.1	16.1	14.9	12.5	12.6	14.3	15.5	20.7	18.6
2016	18.7	15.7	16.5	15.6	16.4	12.9	11.4	10.7	14.3	17.9	17.2	20.3
2017	15.5	18.0	14.6	16.4	14.3	13.3	14.2	11.9	17.6	17.5	20.3	17.2
2018	20.6	21.5	16.0	17.3	14.4	13.6	14.1	13.3	11.6	16.6	18.7	18.4
2019	18.1	21.0	18.6	16.7	12.5	13.4	12.5	12.4	13.8	15.8	16.0	20.7
2020	17.3	21.6	17.0	16.6	14.7	14.1	11.8	12.3	15.3	15.6	21.4	19.6
2021	21.6	20.9	20.5	16.4	15.7	13.8	10.7	9.9	10.7	M	M	20.3
2022	19.0	19.3	18.5	17.3	14.1	14.7	11.8	14.4	16.2	18.4	17.1	20.5
2023	16.1	17.6	20.3	22.8	M	M	M	M	M	M	M	M
2024	20.8	20.1	16.9	19.9	16.8	14.6	12.2	12.8	M	M	M	M
2025	M	M	M	M	M	M	M	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
2014	M	M	M	M	44.27	48.04	52.69	54.67	52.03	45.04	41.97	39.32
2015	37.07	39.16	38.67	38.47	44.86	48.11	51.19	54.26	51.56	46.66	42.00	39.01
2016	37.27	38.49	37.37	42.22	46.96	49.95	54.01	55.67	53.98	48.30	37.81	33.47
2017	29.52	28.91	35.39	39.33	44.65	49.28	51.26	53.13	50.08	46.70	44.68	39.04
2018	36.95	40.68	40.70	41.50	43.92	47.33	51.38	54.78	53.14	47.72	43.91	37.23
2019	38.29	41.01	39.00	41.06	45.42	49.93	53.73	56.77	53.56	49.04	44.05	37.57
2020	33.09	37.73	39.17	41.82	46.07	49.29	53.30	54.85	50.84	46.99	42.09	37.90
2021	36.13	40.28	38.60	41.46	44.67	48.74	52.46	54.48	54.24	M	M	41.34
2022	35.43	37.49	33.00	36.09	39.80	46.40	44.60	48.20	49.84	45.71	42.41	39.86
2023	36.24	37.66	37.11	32.30	M	M	M	M	M	M	M	M
2024	35.04	35.67	33.05	37.18	40.27	45.28	50.81	52.63	M	M	M	M
2025	M	M	M	M	M	M	M	M	M	M	M	M
NCEI Climatology	37.10	38.41	38.69	41.51	46.40	52.00	57.20	59.10	54.40	47.90	43.10	39.10

Average Daily Low Temperature [F]

Year	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
2014	M	M	M	M	38.31	41.52	46.70	48.39	45.81	38.41	36.03	32.81
2015	32.03	32.52	32.49	31.98	37.98	42.07	46.06	47.28	44.65	40.83	35.34	32.38
2016	31.67	32.64	31.23	35.25	41.61	42.90	47.82	49.19	46.27	41.46	29.86	27.79
2017	22.95	22.86	27.11	33.23	37.38	42.49	45.97	46.89	44.98	39.81	38.35	33.14
2018	31.56	34.60	33.50	34.91	37.00	42.10	46.08	46.96	46.76	41.34	37.62	31.08
2019	33.57	35.68	32.97	35.13	39.00	44.81	47.89	50.31	47.23	42.23	37.51	31.35
2020	26.50	31.49	31.94	35.32	38.92	43.79	47.57	47.22	43.75	39.86	35.90	30.87
2021	30.82	34.35	31.36	34.87	38.52	42.80	46.49	47.69	47.58	M	M	36.73
2022	29.45	31.19	32.40	34.78	39.20	45.50	44.60	48.20	44.03	38.44	36.93	34.46
2023	31.25	31.23	32.35	30.20	M	M	M	M	M	M	M	M
2024	28.85	30.80	28.70	32.86	34.87	41.22	44.08	45.71	M	M	M	M
2025	M	M	M	M	M	M	M	M	M	M	M	M
NCEI Climatology	29.00	29.91	29.70	33.00	37.80	42.90	47.10	48.60	44.60	38.90	33.90	31.10

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

Year	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
2014	M	M	M	M	41.29	44.78	49.69	51.53	48.92	41.72	39.00	36.06
2015	34.55	35.84	35.58	35.22	41.42	45.09	48.62	50.77	48.10	43.74	38.67	35.69
2016	34.47	35.57	34.30	38.73	44.28	46.42	50.91	52.43	50.13	44.88	33.83	30.63
2017	26.23	25.88	31.25	36.28	41.02	45.88	48.62	50.01	47.53	43.26	41.52	36.09
2018	34.26	37.64	37.10	38.21	40.46	44.72	48.73	50.87	49.95	44.53	40.77	34.15
2019	35.93	38.34	35.98	38.10	42.21	47.37	50.81	53.54	50.39	45.63	40.78	34.46
2020	29.80	34.61	35.55	38.57	42.49	46.54	50.43	51.04	47.29	43.43	38.99	34.39
2021	33.47	37.31	34.98	38.17	41.60	45.77	49.47	51.09	50.91	M	M	39.03
2022	32.44	34.34	32.70	35.44	39.50	45.95	44.60	48.20	46.93	42.07	39.67	37.16
2023	33.74	34.44	34.73	31.25	M	M	M	M	M	M	M	M
2024	31.94	33.23	30.88	35.02	37.57	43.25	47.45	49.17	M	M	M	M
2025	M	M	M	M	M	M	M	M	M	M	M	M
NCEI Climatology	33.05	34.16	34.20	37.25	42.10	47.45	52.15	53.85	49.50	43.40	38.50	35.10

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
2014	M	M	M	M	86.6%	89.9%	93.0%	95.0%	89.5%	78.7%	84.2%	83.5%
2015	82.3%	84.8%	85.1%	80.1%	88.4%	91.3%	94.2%	91.8%	86.0%	85.5%	81.1%	81.0%
2016	84.8%	85.1%	83.1%	86.9%	90.5%	90.9%	94.6%	94.0%	88.0%	84.5%	78.4%	78.4%
2017	77.8%	77.3%	74.3%	86.2%	88.2%	89.0%	95.4%	89.9%	88.1%	84.3%	85.3%	83.5%
2018	81.1%	86.0%	84.1%	82.8%	85.7%	93.2%	93.8%	92.3%	91.2%	83.8%	84.9%	78.9%
2019	85.3%	83.7%	81.1%	84.9%	84.8%	91.8%	92.9%	94.9%	88.0%	84.7%	86.6%	80.3%
2020	77.3%	86.7%	84.9%	86.1%	87.9%	93.2%	94.2%	91.8%	87.3%	82.9%	79.4%	79.7%
2021	81.4%	89.4%	80.0%	60.3%	24.5%	27.0%	28.5%	27.9%	25.1%	M	M	29.9%
2022	20.1%	28.0%	25.7%	25.2%	29.6%	29.6%	36.2%	34.1%	86.7%	81.5%	84.5%	86.9%
2023	86.5%	83.1%	82.1%	74.2%	M	M	M	M	M	M	M	M
2024	76.5%	82.2%	83.3%	89.8%	90.1%	98.9%	98.0%	96.4%	M	M	M	M
2025	M	M	M	M	M	M	M	M	M	M	M	M