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
2000	0.00	0.00	M	0.00	0.00	M	M	0.00	M	0.00	M	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	M	M	M	M	M	M	M	M	M	M	M	M
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	0.00
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
2000	1.8	11.4	M	5.5	M	M	M	12.3	M	5.0	M	1.3
2001	10.8	11.7	M	12.8	12.8	13.6	11.2	12.2	12.0	11.3	14.3	14.3
2002	10.4	9.5	14.6	12.9	14.0	11.9	12.0	13.3	16.8	11.8	12.6	16.0
2003	M	M	M	M	M	M	M	M	M	M	M	M
2004	M	8.2	M	M	M	12.3	14.9	8.4	7.2	9.2	9.5	11.8
2005	14.4	11.9	11.2	13.7	11.0	11.9	13.7	10.3	11.2	13.4	14.8	13.1
2006	10.7	12.7	14.7	15.3	12.4	13.1	12.1	11.7	11.0	14.0	13.2	14.3
2007	9.7	10.5	14.3	14.2	13.3	13.0	11.7	13.7	15.0	13.9	12.3	11.1
2008	13.9	12.0	14.4	14.4	12.8	10.8	10.9	11.3	13.2	13.9	14.1	12.5
2009	9.7	9.3	14.0	14.2	14.7	9.9	13.2	12.7	15.8	11.4	14.2	13.8
2010	10.8	10.8	13.3	13.3	14.6	13.3	11.5	12.4	14.7	13.6	14.8	14.8
2011	12.9	15.9	12.3	14.3	14.5	14.5	14.8	12.8	15.3	15.2	15.7	19.7
2012	12.9	10.8	15.0	12.6	12.5	14.1	12.5	10.5	14.1	14.8	14.7	14.3
2013	13.2	11.3	11.3	14.0	14.2	13.6	13.5	12.4	16.1	13.4	13.9	13.4
2014	15.9	12.3	10.4	12.8	12.5	13.0	13.8	13.0	15.5	14.6	13.9	16.6
2015	11.3	10.2	11.5	14.1	17.1	13.3	13.0	12.7	16.1	16.3	14.2	15.4
2016	13.2	12.1	11.5	12.1	14.5	17.0	11.4	13.5	14.7	15.8	14.1	10.9
2017	16.9	12.1	14.5	16.8	12.3	14.2	15.9	12.7	14.4	18.9	15.2	13.4
2018	11.0	14.9	13.1	11.4	16.0	12.6	13.1	17.4	14.8	14.0	10.1	14.5
2019	13.2	11.1	15.4	14.5	11.3	15.1	12.6	13.5	15.0	13.8	11.1	14.8
2020	12.1	11.2	14.2	17.3	16.9	13.4	13.4	11.3	17.0	13.5	15.1	18.2
2021	6.0	14.5	15.4	14.1	13.8	14.5	13.7	16.7	14.7	13.5	14.2	15.5
2022	13.9	8.7	11.6	15.1	16.7	14.8	12.4	15.2	14.6	17.3	15.1	15.8
2023	13.4	11.5	11.6	13.8	15.5	11.7	12.2	12.4	13.1	13.3	15.6	17.6
2024	16.2	13.0	14.6	14.6	16.8	15.2	14.0	13.8	13.8	14.0	14.8	13.6
2025	15.8	12.9	13.8	15.5	16.1	14.2	12.8	M	M	M	M	M

Average Daily High Temperature [F]

Year	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
2000	-6.16	-16.00	-27.40	3.65	37.04	39.20	M	48.20	M	35.60	M	-2.20
2001	-4.75	-10.88	21.20	22.70	47.97	49.88	65.27	56.15	48.26	39.08	28.64	22.77
2002	-7.31	-11.97	-0.63	20.24	29.56	46.34	58.83	60.28	48.80	36.24	22.40	12.61
2003	3.95	-11.59	-2.75	17.36	36.01	44.90	60.34	57.90	48.86	37.92	29.12	18.24
2004	5.00	3.20	M	M	M	48.48	51.29	47.02	42.55	35.51	24.30	-6.17
2005	-6.73	-2.01	6.92	26.90	44.14	51.26	55.69	M	41.00	41.52	27.56	9.82
2006	0.06	-5.16	10.98	23.18	35.05	46.10	53.90	53.46	42.20	38.71	24.99	14.38
2007	-0.70	2.00	0.51	22.31	29.85	48.51	54.94	55.15	46.09	40.85	25.72	5.52
2008	-1.50	-7.99	2.60	23.93	40.39	58.36	65.65	62.68	46.72	40.75	25.35	4.83
2009	-6.11	-3.91	2.66	21.73	29.28	50.39	66.78	54.93	47.04	37.17	29.95	16.70
2010	3.52	6.71	13.75	29.33	36.06	48.09	61.59	58.03	50.21	39.81	32.01	24.55
2011	10.18	1.33	3.46	17.68	32.28	52.68	58.21	57.19	47.24	40.54	29.60	16.09
2012	-0.57	-0.52	10.98	21.80	35.60	57.26	56.79	59.75	50.36	35.14	27.50	17.31
2013	0.47	-2.01	11.39	18.50	34.44	51.14	53.25	57.66	44.84	38.21	22.64	1.40
2014	-0.11	-3.23	-4.81	13.76	42.10	51.98	59.00	59.64	44.54	40.42	23.60	13.83
2015	-10.68	-18.66	-3.94	22.22	32.00	45.86	58.77	58.54	48.02	34.03	24.92	13.13
2016	1.75	-7.79	2.15	12.20	34.55	51.92	60.05	57.78	49.64	34.26	27.50	8.60
2017	5.41	-5.67	8.37	18.68	38.91	55.76	55.17	55.52	48.44	37.17	24.20	10.17
2018	-10.91	-9.79	10.98	15.62	25.50	41.36	58.07	49.65	42.86	30.08	21.44	11.50
2019	-6.73	-4.06	3.78	20.12	35.66	56.30	59.17	59.64	47.96	41.17	25.76	12.14
2020	2.39	-5.61	4.42	17.90	32.87	55.10	65.21	60.51	47.42	35.95	24.80	15.45
2021	11.20	3.20	4.42	24.86	34.61	43.88	54.94	55.28	51.38	45.41	26.90	16.15
2022	-3.93	-13.90	5.93	19.76	35.60	60.08	60.86	56.46	49.22	40.25	23.78	17.60
2023	1.34	-11.39	4.71	22.04	38.39	56.78	60.92	61.21	50.60	40.59	29.49	22.25
2024	6.97	-1.21	12.08	26.18	41.99	52.94	56.39	59.52	54.62	43.38	32.90	22.01
2025	11.27	-0.08	5.58	23.12	34.32	47.96	55.64	M	M	M	M	M

Average Daily Low Temperature [F]

Year	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
2000	-6.88	-18.10	-27.40	-1.30	35.96	37.40	M	46.40	M	33.80	M	-9.40
2001	-19.74	-23.48	10.40	9.92	32.64	36.08	50.70	47.45	39.92	31.48	19.82	9.30
2002	-20.37	-27.34	-15.55	2.84	20.74	32.06	45.94	48.08	38.90	28.92	10.76	1.92
2003	-6.44	-23.22	-15.84	3.74	25.61	31.46	44.19	45.24	41.00	28.98	19.10	4.83
2004	5.00	-1.30	M	M	M	44.32	47.17	44.67	41.49	33.71	20.89	-9.40
2005	-20.66	-20.26	-6.32	11.00	29.39	35.36	42.68	M	39.20	34.67	17.48	-4.81
2006	-16.31	-14.41	5.75	21.11	32.78	41.00	50.18	49.72	39.80	37.89	23.19	10.55
2007	-12.46	-17.14	-14.80	8.93	21.70	33.35	42.81	45.47	36.97	30.99	11.27	-8.41
2008	-17.45	-21.99	-14.41	8.87	27.90	41.27	49.15	50.43	37.56	32.71	13.80	-7.43
2009	-17.31	-18.09	-13.06	8.03	19.38	34.27	49.95	45.38	37.49	28.36	19.23	4.60
2010	-11.02	-8.21	-3.36	17.19	26.52	34.41	47.75	47.38	40.89	33.80	24.94	15.47
2011	-3.99	-13.45	-12.25	2.87	21.45	35.56	44.65	47.70	38.90	33.28	19.82	4.25
2012	-14.80	-15.42	-6.32	8.78	26.66	37.70	44.83	47.04	41.24	27.99	18.14	5.81
2013	-13.58	-16.09	-0.77	3.50	22.71	33.74	41.70	45.18	35.84	30.20	9.20	-10.21
2014	-12.07	-14.93	-20.03	-1.72	27.99	37.10	45.53	46.69	36.26	33.80	11.36	3.32
2015	-22.58	-29.84	-19.79	8.54	24.28	33.32	43.03	43.55	37.64	26.89	13.34	-3.25
2016	-10.97	-21.88	-14.51	-2.74	25.21	36.20	46.92	44.66	39.32	26.54	16.34	-5.57
2017	-6.50	-18.01	-7.83	7.58	24.10	37.58	43.38	44.48	40.76	28.98	14.00	-5.16
2018	-22.52	-24.83	-4.81	-4.06	16.55	29.36	41.00	40.48	35.30	19.98	8.06	-0.86
2019	-18.92	-15.70	-10.68	3.44	24.92	38.84	46.17	47.21	39.74	34.67	14.72	1.57
2020	-13.58	-21.26	-13.00	6.26	24.16	36.08	49.07	47.27	39.68	27.24	11.18	0.99
2021	-4.40	-9.10	-12.65	10.04	25.09	31.64	42.22	43.90	40.76	37.23	16.16	4.01
2022	-16.40	-24.97	-7.54	3.38	26.08	40.34	45.35	46.73	40.46	32.41	12.86	6.05
2023	-13.46	-26.69	-11.55	12.74	28.11	38.90	46.46	47.45	40.58	31.77	19.40	11.74
2024	-7.77	-15.36	-2.43	10.88	29.33	39.08	45.47	49.65	44.12	35.54	24.74	9.70
2025	0.33	-13.32	-8.88	8.72	20.04	33.92	42.08	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
2000	-6.52	-17.05	-27.40	1.18	36.50	38.30	M	47.30	M	34.70	M	-5.80
2001	-12.25	-17.18	15.80	16.31	40.30	42.98	57.98	51.80	44.09	35.28	24.23	16.03
2002	-13.84	-19.65	-8.09	11.54	25.15	39.20	52.38	54.18	43.85	32.58	16.58	7.26
2003	-1.24	-17.40	-9.30	10.55	30.81	38.18	52.26	51.57	44.93	33.45	24.11	11.53
2004	5.00	0.95	M	M	M	46.40	49.23	45.85	42.02	34.61	22.60	-7.79
2005	-13.70	-11.14	0.30	18.95	36.76	43.31	49.19	M	40.10	38.10	22.52	2.50
2006	-8.12	-9.79	8.37	22.15	33.92	43.55	52.04	51.59	41.00	38.30	24.09	12.46
2007	-6.58	-7.57	-7.15	15.62	25.77	40.93	48.88	50.31	41.53	35.92	18.49	-1.45
2008	-9.47	-14.99	-5.91	16.40	34.15	49.82	57.40	56.55	42.14	36.73	19.57	-1.30
2009	-11.71	-11.00	-5.20	14.88	24.33	42.33	58.37	50.15	42.27	32.76	24.59	10.65
2010	-3.75	-0.75	5.19	23.26	31.29	41.25	54.67	52.71	45.55	36.81	28.47	20.01
2011	3.09	-6.06	-4.39	10.28	26.87	44.12	51.43	52.45	43.07	36.91	24.71	10.17
2012	-7.69	-7.97	2.33	15.29	31.13	47.48	50.81	53.40	45.80	31.56	22.82	11.56
2013	-6.55	-9.05	5.31	11.00	28.57	42.44	47.47	51.42	40.34	34.21	15.92	-4.41
2014	-6.09	-9.08	-12.42	6.02	35.05	44.54	52.26	53.16	40.40	37.11	17.48	8.57
2015	-16.63	-24.25	-11.87	15.38	28.14	39.59	50.90	51.05	42.83	30.46	19.13	4.94
2016	-4.61	-14.83	-6.18	4.73	29.88	44.06	53.48	51.22	44.48	30.40	21.92	1.52
2017	-0.55	-11.84	0.27	13.13	31.51	46.67	49.27	50.00	44.60	33.07	19.10	2.50
2018	-16.72	-17.31	3.08	5.78	21.03	35.36	49.54	45.06	39.08	25.03	14.75	5.32
2019	-12.83	-9.88	-3.45	11.78	30.29	47.57	52.67	53.43	43.85	37.92	20.24	6.86
2020	-5.60	-13.43	-4.29	12.08	28.52	45.59	57.14	53.89	43.55	31.59	17.99	8.22
2021	3.40	-2.95	-4.12	17.45	29.85	37.76	48.58	49.59	46.07	41.32	21.53	10.08
2022	-10.17	-19.43	-0.81	11.57	30.84	50.21	53.11	51.60	44.84	36.33	18.32	11.82
2023	-6.06	-19.04	-3.42	17.39	33.25	47.84	53.69	54.33	45.59	36.18	24.45	16.99
2024	-0.40	-8.28	4.83	18.53	35.66	46.01	50.93	54.59	49.37	39.46	28.82	15.86
2025	5.80	-6.70	-1.65	15.92	27.18	40.94	48.86	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
2000	61.7%	74.0%	M	71.8%	M	M	M	93.4%	M	97.3%	M	70.0%
2001	68.7%	67.3%	M	79.4%	77.4%	76.7%	71.8%	82.3%	84.8%	84.8%	84.4%	86.2%
2002	69.3%	66.3%	69.0%	74.3%	76.2%	67.2%	64.7%	65.0%	81.3%	86.5%	82.9%	81.3%
2003	M	M	M	M	M	M	M	M	M	M	M	M
2004	M	80.2%	M	M	M	87.4%	91.6%	88.2%	86.0%	85.1%	85.0%	83.1%
2005	67.4%	68.1%	75.1%	87.7%	77.3%	75.8%	86.4%	82.4%	85.0%	88.5%	85.4%	81.2%
2006	75.2%	72.0%	77.8%	77.3%	74.6%	77.2%	77.7%	81.9%	83.5%	86.3%	86.7%	85.8%
2007	77.4%	75.5%	75.2%	85.0%	86.3%	81.1%	89.6%	86.6%	83.6%	81.7%	86.2%	79.7%
2008	75.1%	72.2%	75.0%	83.8%	85.5%	74.8%	73.9%	85.0%	83.8%	88.3%	84.5%	72.1%
2009	68.2%	73.0%	77.7%	87.2%	87.8%	79.0%	67.3%	80.8%	78.4%	83.0%	82.9%	87.6%
2010	77.2%	79.6%	75.1%	72.0%	81.8%	80.8%	78.4%	91.2%	87.2%	91.4%	89.4%	87.8%
2011	81.9%	80.6%	80.6%	85.4%	84.3%	72.1%	78.2%	87.5%	86.0%	84.6%	86.3%	80.7%
2012	77.0%	77.2%	80.3%	84.5%	85.5%	76.4%	83.5%	81.4%	84.2%	84.4%	86.0%	84.9%
2013	78.4%	78.1%	79.5%	85.5%	82.6%	70.3%	84.3%	80.7%	84.6%	88.1%	86.7%	81.5%
2014	81.6%	80.4%	78.7%	82.7%	81.7%	75.9%	79.4%	80.7%	84.8%	89.3%	85.2%	86.0%
2015	74.7%	71.0%	77.0%	85.2%	87.0%	83.4%	82.9%	81.3%	85.3%	85.8%	89.5%	86.1%
2016	82.5%	76.7%	81.4%	83.2%	86.2%	75.4%	81.5%	83.9%	83.1%	82.4%	87.0%	79.3%
2017	78.0%	74.9%	77.2%	82.8%	76.9%	71.9%	79.8%	83.3%	85.9%	83.9%	84.1%	81.5%
2018	76.3%	74.8%	81.9%	83.4%	84.7%	82.9%	73.9%	85.8%	83.6%	81.8%	85.3%	81.8%
2019	75.2%	76.4%	78.7%	81.2%	86.6%	76.1%	81.2%	82.8%	84.9%	86.8%	85.1%	82.1%
2020	79.4%	75.8%	77.2%	80.4%	81.9%	70.1%	75.0%	77.9%	84.9%	82.7%	83.6%	82.5%
2021	83.1%	78.6%	78.4%	80.4%	81.8%	82.2%	78.3%	82.8%	80.2%	85.6%	82.9%	78.3%
2022	71.1%	68.4%	76.1%	78.6%	82.2%	65.6%	80.7%	86.2%	86.6%	85.7%	81.3%	83.4%
2023	79.5%	74.7%	80.5%	87.2%	84.1%	68.9%	82.5%	77.6%	83.0%	87.0%	85.3%	81.8%
2024	81.3%	78.6%	83.5%	83.4%	79.0%	79.6%	82.9%	85.2%	83.7%	84.5%	87.3%	85.1%
2025	82.6%	78.5%	76.2%	83.9%	79.2%	80.0%	83.9%	M	M	M	M	M