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
2007	M	M	M	M	M	M	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	M	0.00	0.00	M	M	M
2011	M	M	M	M	M	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

Average Wind Speed [MPH]

Year	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
2007	M	M	M	M	M	M	9.2	7.8	8.2	8.1	9.3	10.0
2008	6.4	11.6	11.6	10.8	9.6	9.4	8.7	9.2	9.0	8.3	10.5	7.8
2009	10.3	9.5	8.7	11.7	10.3	8.4	7.8	9.0	8.0	8.4	8.3	9.5
2010	7.9	8.9	13.3	9.3	9.8	8.2	M	8.6	8.2	M	M	M
2011	M	M	M	M	M	8.9	9.1	9.5	9.9	8.6	10.6	8.4
2012	5.4	5.2	10.1	10.5	10.2	8.3	8.9	9.0	8.6	9.6	13.5	8.6
2013	11.3	10.8	12.5	11.9	12.0	9.5	7.8	8.6	8.2	9.7	10.5	11.4
2014	11.7	8.9	11.9	12.5	11.1	9.4	9.4	8.3	8.5	11.7	11.3	11.4
2015	10.5	10.2	10.7	9.9	10.4	9.9	9.8	8.9	8.7	11.0	10.6	13.0
2016	8.9	9.2	12.0	9.3	9.8	9.0	7.4	9.0	8.8	9.0	11.4	13.4
2017	11.6	11.3	8.7	11.5	11.7	8.8	8.2	7.5	9.1	10.1	8.8	7.5
2018	8.6	6.9	11.5	11.4	12.6	9.2	8.1	8.6	8.8	10.7	11.3	8.1
2019	8.3	9.9	8.6	9.9	9.4	9.2	9.0	8.8	8.6	9.9	9.8	9.8
2020	12.0	11.8	11.3	10.9	9.3	10.6	9.7	8.5	9.8	10.1	9.9	9.2
2021	9.1	12.3	13.6	10.8	10.6	9.9	8.7	8.2	9.3	10.3	11.4	10.3
2022	8.3	8.6	12.8	10.0	10.3	10.0	10.1	8.3	8.6	10.0	11.0	8.1
2023	13.0	8.0	11.3	10.8	10.8	9.7	8.6	8.4	8.2	10.6	11.5	13.4
2024	12.1	12.7	11.4	10.7	11.6	8.8	7.9	7.7	8.7	8.5	15.5	M

Average Daily High Temperature [F]

Year	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
2007	M	M	M	M	M	82.40	81.84	78.05	69.66	48.42	29.14	16.37
2008	-0.63	15.44	40.52	55.04	73.83	80.81	87.86	77.75	59.24	53.19	36.65	15.54
2009	11.85	9.22	28.48	55.39	69.30	72.95	77.59	76.54	66.03	50.28	29.29	14.51
2010	-5.40	0.63	26.07	54.55	65.83	80.77	M	80.76	56.66	M	M	M
2011	M	M	M	M	M	82.45	78.20	73.64	69.86	54.12	25.76	11.78
2012	-0.05	0.72	29.04	64.64	69.10	82.94	87.22	80.19	67.76	50.41	26.84	-5.74
2013	11.74	14.84	30.84	57.98	62.43	75.20	79.50	77.12	65.00	48.49	38.90	24.97
2014	11.33	3.71	36.88	55.28	68.46	81.56	79.61	80.77	60.38	43.85	25.79	17.77
2015	15.39	18.89	27.82	55.22	71.48	82.22	81.76	77.52	64.04	48.43	23.42	27.30
2016	1.98	23.37	36.82	61.04	69.22	79.04	79.50	78.97	74.72	37.28	17.36	21.66
2017	16.90	14.77	28.17	56.54	71.37	82.76	80.37	79.55	63.62	47.97	33.80	17.08
2018	-0.46	12.07	28.81	53.54	60.39	78.20	80.19	76.77	63.92	51.45	27.92	10.57
2019	12.37	13.74	36.70	55.46	67.30	73.94	83.21	81.82	66.80	53.87	25.34	23.64
2020	19.57	25.48	36.99	66.50	79.09	79.82	83.30	80.77	64.70	50.00	29.60	10.34
2021	5.00	17.92	28.23	56.90	77.23	77.00	82.17	78.92	61.88	49.01	29.84	22.71
2022	15.63	18.18	26.60	61.10	76.07	81.44	83.33	74.79	70.22	53.60	24.86	9.01
2023	17.77	14.39	39.66	52.16	71.19	83.30	87.34	79.85	67.10	53.95	40.04	18.01
2024	15.51	14.25	32.06	56.48	62.95	82.58	83.45	77.06	61.76	51.63	36.24	M

Average Daily Low Temperature [F]

Year	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
2007	M	M	M	M	M	82.40	61.79	52.66	43.25	31.15	12.00	0.15
2008	-20.59	-2.24	22.95	28.61	46.32	55.19	62.57	54.37	38.27	29.97	24.52	-1.82
2009	-6.94	-11.86	9.08	32.25	43.05	51.58	56.06	52.28	40.35	29.49	14.93	-7.32
2010	-25.65	-21.16	7.40	28.71	39.98	53.31	M	51.68	36.36	M	M	M
2011	M	M	M	M	M	58.62	54.29	51.77	42.26	33.97	7.40	-5.14
2012	-15.85	-20.26	11.88	34.22	42.57	58.58	62.72	54.94	44.30	30.61	13.10	-22.52
2013	-4.70	-1.43	14.46	35.24	41.29	48.98	57.32	55.52	41.18	28.75	23.72	8.77
2014	-6.32	-13.90	15.97	30.74	41.64	55.10	56.85	54.59	38.90	29.56	13.01	-1.10
2015	-2.90	-0.21	12.32	32.90	45.88	56.78	58.13	52.32	40.76	31.54	9.68	14.64
2016	-14.22	6.12	19.57	37.82	40.19	55.70	61.32	54.24	45.38	25.03	4.04	2.04
2017	3.14	-3.29	8.89	33.32	44.48	56.42	58.19	53.66	41.96	29.74	18.38	-1.21
2018	-17.18	-7.09	10.98	31.82	38.33	54.74	57.14	52.15	41.78	30.55	14.96	-8.35
2019	-7.48	-6.57	16.15	29.84	37.81	50.78	58.36	54.88	40.40	33.27	6.44	8.95
2020	4.36	10.28	18.01	36.02	50.00	53.78	60.14	54.99	42.08	30.43	13.82	-7.19
2021	-12.71	-3.81	12.43	29.78	47.62	51.44	57.37	56.04	39.08	29.91	12.14	8.54
2022	-4.23	-2.52	9.82	32.66	46.75	53.42	59.29	51.10	41.72	30.20	9.26	-9.81
2023	3.37	-5.61	21.78	24.50	41.87	54.38	60.86	55.75	47.24	32.99	25.40	2.50
2024	-2.90	-2.39	16.67	35.78	43.85	59.18	62.02	54.88	40.88	28.86	21.20	M

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

Year	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
2007	M	M	M	M	M	82.40	71.82	65.35	56.46	39.74	20.57	8.26
2008	-10.61	6.60	31.74	41.83	60.07	68.00	75.21	66.06	48.75	41.58	30.58	6.86
2009	2.46	-1.32	18.78	43.82	56.17	62.27	66.82	64.41	53.19	39.88	22.11	3.60
2010	-15.52	-10.26	16.74	41.63	52.91	67.04	M	66.22	46.51	M	M	M
2011	M	M	M	M	M	70.53	66.24	62.70	56.06	44.05	16.58	3.32
2012	-7.95	-9.77	20.46	49.43	55.84	70.76	74.97	67.56	56.03	40.51	19.97	-14.13
2013	3.52	6.70	22.65	46.61	51.86	62.09	68.41	66.32	53.09	38.62	31.31	16.87
2014	2.50	-5.09	26.43	43.01	55.05	68.33	68.23	67.68	49.64	36.70	19.40	8.34
2015	6.25	9.34	20.07	44.06	58.68	69.50	69.95	64.92	52.40	39.98	16.55	20.97
2016	-6.12	14.74	28.20	49.43	54.70	67.37	70.41	66.61	60.05	31.16	10.70	11.85
2017	10.02	5.74	18.53	44.93	57.93	69.59	69.28	66.61	52.79	38.85	26.09	7.93
2018	-8.82	2.49	19.89	42.68	49.36	66.47	68.67	64.46	52.85	41.00	21.44	1.11
2019	2.45	3.59	26.43	42.65	52.55	62.36	70.79	68.35	53.60	43.57	15.89	16.29
2020	11.97	17.88	27.50	51.26	64.55	66.80	71.72	67.88	53.39	40.22	21.71	1.57
2021	-3.85	7.06	20.33	43.34	62.43	64.22	69.77	67.48	50.48	39.46	20.99	15.63
2022	5.70	7.83	18.21	46.88	61.41	67.43	71.31	62.95	55.97	41.90	17.06	-0.40
2023	10.57	4.39	30.72	38.33	56.53	68.84	74.10	67.80	57.17	43.47	32.72	10.25
2024	6.31	5.93	24.36	46.13	53.40	70.88	72.73	65.97	51.32	40.25	28.72	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
2007	M	M	M	M	M	M	62.6%	57.7%	57.0%	73.8%	83.1%	84.4%
2008	76.4%	79.9%	76.6%	52.2%	44.7%	44.9%	46.9%	54.3%	67.6%	66.0%	82.6%	80.3%
2009	78.6%	76.0%	81.6%	56.1%	49.2%	59.8%	65.0%	59.7%	60.6%	64.2%	79.9%	75.0%
2010	68.6%	67.0%	76.2%	53.6%	47.4%	43.8%	M	39.9%	58.5%	M	M	M
2011	M	M	M	M	M	47.4%	52.4%	58.8%	49.8%	69.0%	73.0%	75.1%
2012	72.6%	72.0%	76.0%	45.6%	44.8%	49.9%	48.3%	48.5%	53.7%	63.2%	79.4%	68.7%
2013	75.4%	76.8%	77.8%	58.9%	54.4%	44.3%	61.6%	64.5%	60.3%	66.0%	71.2%	76.2%
2014	72.1%	70.5%	69.9%	49.4%	41.8%	43.2%	53.3%	51.1%	60.5%	72.4%	79.4%	76.4%
2015	74.5%	75.0%	78.3%	60.6%	48.0%	52.9%	50.6%	50.3%	54.4%	61.3%	75.6%	79.4%
2016	69.7%	76.0%	70.3%	55.5%	37.3%	48.0%	71.2%	62.1%	55.2%	85.6%	81.3%	83.9%
2017	84.9%	81.6%	84.9%	62.8%	51.6%	53.0%	68.5%	62.4%	68.1%	77.9%	87.5%	86.3%
2018	78.1%	83.7%	82.4%	68.1%	63.9%	64.2%	65.4%	67.6%	73.1%	75.8%	87.2%	81.2%
2019	83.7%	81.3%	85.1%	64.1%	48.4%	67.8%	60.5%	54.5%	64.9%	73.1%	78.9%	88.2%
2020	86.9%	86.1%	75.8%	51.0%	46.1%	44.2%	57.7%	57.2%	63.3%	69.6%	79.4%	77.9%
2021	74.9%	78.4%	80.2%	53.9%	40.3%	52.2%	54.2%	65.0%	66.4%	74.1%	77.1%	83.3%
2022	81.7%	81.6%	80.7%	55.5%	42.4%	50.0%	54.0%	62.6%	51.0%	62.9%	76.9%	75.6%
2023	75.7%	76.8%	72.3%	51.0%	38.3%	42.3%	52.2%	60.5%	72.2%	73.1%	80.6%	78.0%
2024	78.4%	78.5%	82.2%	63.8%	65.8%	62.2%	66.3%	70.4%	70.9%	70.2%	78.3%	M