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 (USC00143855) 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
2015	M	M	M	M	M	M	M	M	M	0.35	0.79	0.35
2016	M	0.29	M	5.88	0.24	2.51	1.16	2.22	0.46	0.58	M	0.26
2017	1.31	0.03	2.39	4.12	1.81	0.20	4.07	4.15	3.21	0.52	0.00	M
2018	M	M	M	0.95	0.95	2.30	3.70	3.35	1.66	M	M	1.32
2019	0.24	0.41	1.52	0.59	3.64	1.57	3.22	0.95	0.34	0.35	0.05	1.11
2020	0.71	0.26	0.86	0.29	0.80	0.38	2.07	2.55	1.40	0.49	0.21	0.07
2021	0.03	M	2.05	0.05	4.93	1.40	3.39	0.58	2.77	0.98	M	M
2022	0.01	M	0.12	0.21	0.76	3.27	1.93	0.17	0.07	0.01	0.01	M
2023	0.14	0.17	0.03	1.55	4.34	3.29	0.64	0.05	0.04	0.01	0.04	0.99
2024	0.35	0.33	0.03	0.04	0.52	2.76	2.14	0.98	0.90	0.01	3.25	M
2025	0.06	M	0.03	0.21	3.03	0.23	M	M	M	M	M	M
NCEI Climatology	0.46	0.32	1.14	1.58	2.18	3.40	2.67	3.17	1.77	1.61	0.51	0.93

Average Wind Speed [MPH]

Year	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
2015	M	M	M	M	M	M	M	M	M	9.8	10.9	11.0
2016	9.8	12.0	12.7	12.8	12.4	10.9	10.5	8.8	11.2	11.2	10.9	10.0
2017	9.4	10.4	12.5	13.4	12.2	12.2	8.8	7.8	10.5	12.4	9.7	10.4
2018	10.8	12.4	13.3	14.8	12.3	13.9	9.2	9.5	11.5	10.5	10.4	10.7
2019	9.5	10.5	11.9	12.7	11.3	11.4	10.0	8.8	12.6	11.8	11.4	9.6
2020	10.0	11.5	13.0	12.8	14.0	15.7	10.6	9.8	9.8	10.8	11.9	11.0
2021	11.3	8.2	13.6	13.2	13.7	10.4	9.5	10.2	10.6	9.9	8.9	10.3
2022	9.4	10.7	13.7	15.3	14.8	11.9	9.4	8.5	9.7	9.2	12.2	11.3
2023	9.9	12.1	12.8	12.9	11.8	9.6	9.1	8.8	9.2	9.7	9.7	10.5
2024	10.1	11.2	11.4	13.0	11.7	14.2	10.9	10.2	10.3	12.1	11.6	9.7
2025	11.4	12.3	15.0	14.4	12.3	12.7	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
2015	M	M	M	M	M	M	M	M	M	56.48	60.18	49.99
2016	51.32	61.43	67.86	71.35	76.62	93.16	96.10	89.59	87.15	82.05	66.35	47.85
2017	49.15	64.02	68.15	69.10	77.49	91.77	95.09	85.53	83.30	74.00	63.88	50.40
2018	54.94	52.63	67.75	68.79	87.26	93.78	92.96	90.17	84.91	63.02	54.14	47.77
2019	43.43	44.93	53.35	71.17	72.73	85.72	91.41	92.70	90.71	66.24	57.55	52.46
2020	51.36	48.10	63.56	69.98	79.39	94.68	93.52	90.90	82.08	69.55	63.88	47.79
2021	49.43	39.76	61.25	68.38	74.50	89.22	90.00	93.33	88.50	75.55	64.13	60.38
2022	49.73	48.43	61.43	72.80	81.96	88.79	95.17	93.32	89.42	74.02	55.00	50.48
2023	47.85	55.86	58.90	70.46	78.73	82.49	90.19	92.16	87.46	73.00	62.43	52.65
2024	41.83	57.74	63.85	73.71	77.73	92.31	93.08	93.77	89.09	80.58	59.76	56.13
2025	41.77	51.39	69.18	74.09	76.65	83.60	M	M	M	M	M	M
NCEI Climatology	47.41	51.63	60.60	69.01	78.60	88.29	92.30	89.69	82.91	70.50	57.70	47.11

Average Daily Low Temperature [F]

Year	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
2015	M	M	M	M	M	M	M	M	M	38.66	31.78	26.16
2016	20.75	26.63	32.05	42.01	48.80	62.89	67.07	63.42	57.51	46.46	33.03	17.17
2017	22.15	27.42	32.99	44.50	48.97	62.36	65.86	62.83	56.82	43.40	32.45	19.02
2018	17.47	21.15	31.14	33.58	56.85	63.21	65.13	62.94	59.21	39.34	24.92	18.15
2019	26.06	25.11	28.64	39.80	47.67	57.96	65.24	64.68	61.10	34.47	24.74	22.34
2020	21.41	22.92	33.67	37.08	51.14	61.50	65.91	62.55	50.25	37.32	31.42	20.26
2021	20.45	12.51	31.49	35.56	51.10	62.25	64.09	62.60	57.49	41.44	29.75	22.99
2022	15.61	15.55	26.59	39.15	50.12	62.51	67.09	62.62	55.31	40.95	25.01	17.00
2023	19.89	18.67	27.72	36.84	53.27	58.94	64.75	62.27	57.14	40.81	28.97	25.18
2024	18.16	26.93	29.39	39.59	48.11	64.65	63.67	63.85	54.62	44.58	30.49	22.29
2025	13.83	16.41	31.68	40.84	48.21	65.27	M	M	M	M	M	M
NCEI Climatology	20.10	22.71	30.70	39.41	50.21	59.90	64.60	62.90	54.80	41.60	29.30	21.00

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

Year	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
2015	M	M	M	M	M	M	M	M	M	47.57	45.98	38.08
2016	36.04	44.03	49.95	56.68	62.71	78.02	81.58	76.51	72.33	64.25	49.69	32.51
2017	35.65	45.72	50.57	56.80	63.23	77.06	80.48	74.18	70.06	58.70	48.17	34.71
2018	36.20	36.89	49.44	51.19	72.06	78.49	79.05	76.56	72.06	51.18	39.53	32.96
2019	34.75	35.02	40.99	55.49	60.20	71.84	78.32	78.69	75.91	50.35	41.15	37.40
2020	36.39	35.51	48.62	53.53	65.26	78.09	79.71	76.73	66.17	53.43	47.65	34.03
2021	34.94	26.13	46.37	51.97	62.80	75.74	77.04	77.96	72.99	58.49	46.94	41.69
2022	32.67	31.99	44.01	55.98	66.04	75.65	81.13	77.97	72.36	57.48	40.01	33.74
2023	33.87	37.27	43.31	53.65	66.00	70.71	77.47	77.22	72.30	56.91	45.70	38.92
2024	30.00	42.34	46.62	56.65	62.92	78.48	78.37	78.81	71.86	62.58	45.12	39.21
2025	27.80	33.90	50.43	57.46	62.43	74.43	M	M	M	M	M	M
NCEI Climatology	33.75	37.17	45.65	54.21	64.40	74.10	78.45	76.30	68.85	56.05	43.50	34.05

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
2015	M	M	M	M	M	M	M	M	M	79.1%	66.6%	64.4%
2016	64.7%	47.7%	45.0%	54.5%	57.5%	53.2%	54.9%	61.4%	55.8%	48.9%	51.3%	59.1%
2017	62.4%	46.3%	48.8%	59.9%	57.9%	49.8%	54.2%	67.1%	59.6%	54.1%	56.5%	52.2%
2018	45.2%	47.6%	41.1%	45.7%	50.8%	50.1%	58.4%	60.4%	63.9%	75.5%	68.9%	65.7%
2019	76.9%	70.7%	70.9%	56.6%	72.7%	62.0%	63.2%	66.6%	61.0%	56.1%	62.4%	63.4%
2020	65.1%	69.8%	64.6%	55.1%	57.1%	47.2%	66.0%	64.7%	62.8%	57.1%	62.3%	70.9%
2021	63.6%	67.4%	62.4%	50.8%	73.4%	62.8%	67.3%	58.8%	54.9%	55.8%	49.8%	40.0%
2022	55.4%	51.6%	48.6%	39.2%	48.4%	55.7%	54.8%	56.9%	53.0%	48.5%	59.9%	55.4%
2023	63.7%	51.5%	51.1%	41.9%	66.6%	70.2%	66.9%	59.4%	57.5%	58.5%	57.5%	66.6%
2024	72.8%	63.6%	54.9%	45.2%	56.7%	63.4%	58.3%	62.0%	55.9%	50.0%	72.1%	64.8%
2025	70.6%	57.5%	46.3%	50.9%	64.6%	68.9%	M	M	M	M	M	M