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 (USW00026617) 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
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	M
2007	M	0.01	M	M	M	M	M	M	M	M	M	M
2008	M	M	M	M	M	M	M	M	M	M	M	M
2009	M	M	M	M	M	M	M	M	M	M	M	M
2010	M	0.05	0.00	0.08	0.41	2.63	2.17	2.49	2.78	0.53	0.30	0.02
2011	0.12	0.33	0.05	0.70	1.15	1.17	4.64	2.66	1.81	0.37	0.30	0.63
2012	0.00	0.07	0.00	0.00	0.33	0.41	3.04	4.35	2.21	3.07	0.20	0.35
2013	0.36	0.17	0.39	0.00	1.35	1.24	1.21	3.00	1.96	2.62	1.54	1.43
2014	1.42	0.12	0.01	0.20	0.49	0.65	2.46	1.35	1.35	0.31	0.01	0.69
2015	M	0.04	M	0.04	0.09	0.03	0.13	0.17	0.08	0.06	0.16	0.73
2016	M	M	M	0.04	1.38	1.25	1.29	2.03	4.74	2.92	0.13	0.37
2017	0.89	0.31	M	0.10	0.88	0.57	1.05	3.36	2.05	5.04	1.03	0.56
2018	0.24	0.14	0.00	0.51	0.98	1.63	1.12	3.33	1.77	2.23	0.83	0.22
2019	0.53	0.52	0.68	0.20	2.59	1.22	2.44	3.50	6.74	4.38	0.27	0.06
2020	0.01	0.25	0.48	0.69	1.37	0.01	M	M	M	M	M	M
2021	M	M	0.00	0.00	M	0.00	0.00	0.00	0.00	M	M	0.00
2022	0.00	0.00	0.00	0.00	M	0.00	M	0.00	0.00	M	0.00	0.00
2023	M	0.00	0.00	M	M	M	M	0.45	0.00	0.00	0.00	0.00
2024	0.00	0.00	M	M	0.41	1.10	2.36	8.04	2.44	1.71	0.02	0.00
2025	2.90	0.52	M	M	M	M	M	M	M	M	M	M
2026	0.00	M	M	M	M	0.00	M	0.00	M	M	M	M
NCEI Climatology	0.94	1.02	0.74	0.74	0.89	0.99	2.35	3.22	2.20	1.84	1.27	1.05

Average Wind Speed [MPH]

Year	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
2005	M	M	M	M	M	M	M	M	6.4	9.1	9.7	6.5
2006	7.2	18.6	14.1	12.1	10.6	11.2	11.3	8.8	8.8	11.4	9.8	10.8
2007	1.7	2.6	9.8	8.1	9.3	9.9	9.2	9.3	11.6	10.1	12.3	11.6
2008	13.2	6.5	11.2	14.0	9.2	8.8	12.8	8.5	6.7	8.2	4.2	2.1
2009	6.4	13.9	11.9	12.7	8.6	9.7	10.0	10.0	8.0	8.3	7.4	11.6
2010	3.0	4.8	8.1	11.0	8.1	12.7	9.1	8.8	10.8	6.5	9.9	11.6
2011	13.6	16.6	10.1	11.1	10.1	11.8	11.4	7.7	4.1	7.5	10.1	11.6
2012	7.0	10.6	9.2	4.4	7.6	8.8	8.6	10.0	1.8	11.1	6.7	9.0
2013	11.4	7.2	9.7	7.9	9.9	10.7	9.7	8.7	8.7	12.1	8.9	0.2
2014	0.7	1.2	6.4	3.7	5.1	11.3	8.5	5.0	8.8	8.4	4.3	0.0
2015	4.3	9.3	8.4	11.6	10.5	10.7	8.3	12.2	11.0	8.4	13.5	10.5
2016	9.1	6.7	5.7	6.9	11.1	10.4	11.6	8.9	11.7	13.3	9.7	12.9
2017	10.6	11.3	6.9	7.2	9.2	10.5	7.2	10.5	10.5	10.7	10.3	10.4
2018	7.4	16.7	14.5	12.3	10.5	10.2	8.2	9.2	10.4	10.8	11.7	10.7
2019	13.8	19.7	12.7	8.4	8.6	10.5	8.8	8.9	11.6	11.2	11.3	10.3
2020	10.6	12.3	15.1	11.5	7.6	10.0	10.0	7.8	10.0	9.6	12.3	12.2
2021	11.4	11.1	14.1	10.9	6.9	9.1	11.6	10.2	9.7	8.3	6.0	18.5
2022	8.1	10.3	10.4	10.8	11.5	10.1	10.1	12.0	10.4	M	M	12.6
2023	M	15.5	15.0	8.0	8.8	9.0	11.1	11.4	10.1	10.2	11.7	11.2
2024	12.1	12.5	M	M	10.4	10.3	10.7	12.8	10.3	12.2	10.1	11.4
2025	13.4	16.5	M	M	M	M	M	M	M	M	M	M
2026	3.1	M	M	M	M	9.4	9.5	9.9	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
2005	M	M	M	M	M	M	M	M	42.80	37.09	19.67	18.02
2006	1.76	24.04	17.27	19.34	39.21	50.22	57.21	53.59	50.09	40.12	26.89	13.94
2007	15.40	21.10	7.58	29.72	35.63	50.50	57.70	59.57	51.49	34.21	28.88	20.46
2008	11.21	1.48	12.43	23.98	37.77	50.34	53.19	54.21	50.06	29.23	18.03	19.92
2009	7.81	14.72	15.71	23.70	35.33	51.48	59.52	55.43	47.95	37.71	16.83	20.29
2010	8.51	14.28	6.41	24.40	39.39	48.87	57.25	56.01	52.04	37.00	28.96	24.05
2011	18.62	19.62	20.18	24.40	42.47	53.42	52.41	52.68	48.79	36.31	17.47	15.56
2012	-6.69	17.24	8.69	26.38	30.22	50.21	54.36	55.42	44.76	36.04	19.96	13.00
2013	20.31	5.48	15.56	22.47	34.07	52.49	58.84	56.99	47.37	41.70	30.12	21.48
2014	28.33	17.80	17.35	33.90	42.83	48.78	56.72	61.82	53.68	34.96	31.38	22.54
2015	17.22	20.91	17.93	27.16	45.65	56.05	58.38	53.84	46.99	40.43	30.62	15.31
2016	23.40	23.51	17.87	36.12	50.29	58.50	59.58	60.26	52.32	43.67	24.30	22.62
2017	18.32	15.44	18.69	36.73	47.33	57.66	59.92	56.57	48.90	40.40	34.86	29.61
2018	17.98	25.01	25.90	32.11	42.65	56.06	60.45	56.84	54.26	44.72	30.44	18.47
2019	22.53	31.67	33.21	32.29	45.95	57.22	62.45	59.09	52.62	41.22	27.69	18.13
2020	6.62	11.53	26.33	33.33	49.69	55.79	55.65	57.83	49.06	41.08	32.60	20.45
2021	15.41	14.24	21.54	31.30	45.13	52.94	53.76	51.86	48.77	29.82	17.25	25.24
2022	5.73	18.66	25.43	34.50	44.03	57.21	56.84	53.59	51.72	41.00	22.97	25.71
2023	M	21.92	23.37	23.24	40.29	52.80	M	55.41	48.05	37.98	30.63	14.43
2024	19.02	22.35	M	M	38.42	52.67	55.75	51.86	48.06	38.39	30.46	18.86
2025	20.91	34.92	M	M	M	M	M	M	M	M	M	M
2026	-12.20	M	M	M	M	54.57	56.16	58.17	M	M	M	M
NCEI Climatology	13.22	16.81	17.60	29.40	43.62	55.12	57.71	56.00	49.01	36.00	24.30	16.20

Average Daily Low Temperature [F]

Year	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
2005	M	M	M	M	M	M	M	M	37.40	29.17	9.65	7.65
2006	-6.48	11.42	5.85	9.01	29.32	40.77	47.57	45.68	42.59	33.77	18.03	2.90
2007	5.51	8.94	-3.71	19.95	28.14	41.93	49.34	51.10	44.81	27.38	19.36	11.84
2008	2.56	-7.45	3.90	14.17	28.99	40.53	44.63	38.25	39.40	21.43	6.15	7.98
2009	-6.15	-2.45	0.46	13.46	27.48	41.00	47.75	46.65	41.08	30.86	6.09	10.75
2010	-1.60	0.89	-6.94	13.97	28.73	39.61	47.55	48.65	43.72	29.15	22.95	6.84
2011	6.23	6.22	7.60	11.35	32.29	44.40	44.93	44.78	42.00	29.58	7.01	1.81
2012	-18.93	4.53	-4.52	17.25	22.44	40.25	46.31	47.30	37.42	29.89	9.99	0.42
2013	8.13	-5.01	1.73	8.10	25.66	41.59	47.61	49.46	40.03	34.77	18.74	12.97
2014	18.32	8.61	5.13	22.23	34.10	40.64	48.26	51.18	44.26	28.46	22.90	12.84
2015	6.12	12.21	8.04	16.04	35.84	44.98	49.06	47.63	39.99	34.79	21.90	5.52
2016	13.55	11.81	8.18	25.58	37.71	46.65	51.64	51.23	43.63	34.90	15.29	11.76
2017	7.72	2.08	-0.37	25.81	34.93	47.58	49.44	47.79	41.50	32.55	28.35	21.16
2018	6.18	15.77	16.42	25.27	34.07	45.50	50.86	49.45	47.07	37.69	22.22	8.91
2019	15.68	24.16	23.84	22.48	37.62	48.19	52.67	51.44	45.19	33.20	19.97	7.16
2020	-3.08	-3.38	13.65	23.48	36.80	46.50	47.54	48.99	42.37	34.01	24.12	10.04
2021	5.61	1.20	7.74	19.44	32.04	44.56	49.06	45.49	41.22	21.89	5.56	16.69
2022	-5.31	11.96	14.23	23.90	33.40	45.53	48.76	46.00	45.65	41.00	22.97	15.91
2023	M	5.02	9.60	9.46	31.18	43.07	M	49.49	40.76	31.26	23.20	4.27
2024	9.06	13.47	M	M	29.66	41.93	46.85	46.35	40.22	31.58	22.60	11.93
2025	10.37	31.44	M	M	M	M	M	M	M	M	M	M
2026	-21.50	M	M	M	M	44.49	47.39	51.34	M	M	M	M
NCEI Climatology	-2.00	1.31	1.61	15.90	30.90	41.51	46.30	44.40	37.20	24.90	12.20	2.00

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

Year	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
2005	M	M	M	M	M	M	M	M	40.10	33.13	14.66	12.83
2006	-2.36	17.73	11.56	14.18	34.26	45.50	52.39	49.64	46.34	36.95	22.46	8.42
2007	10.45	15.02	1.94	24.84	31.88	46.22	53.52	55.34	48.15	30.80	24.12	16.15
2008	6.89	-2.98	8.16	19.07	33.38	45.43	48.91	46.23	44.73	25.33	12.09	13.95
2009	0.83	6.14	8.09	18.58	31.41	46.24	53.64	51.04	44.52	34.29	11.46	15.52
2010	3.45	7.58	-0.27	19.18	34.06	44.24	52.40	52.33	47.88	33.08	25.96	15.45
2011	12.42	12.92	13.89	17.88	37.38	48.91	48.67	48.73	45.40	32.94	12.24	8.69
2012	-12.81	10.88	2.08	21.81	26.33	45.23	50.33	51.36	41.09	32.96	14.97	6.71
2013	14.22	0.23	8.65	15.29	29.87	47.04	53.22	53.22	43.70	38.23	24.43	17.22
2014	23.33	13.20	11.24	28.06	38.46	44.71	52.49	56.50	48.97	31.71	27.14	17.69
2015	11.67	16.56	12.98	21.60	40.75	50.52	53.72	50.73	43.49	37.61	26.26	10.41
2016	18.48	17.66	13.02	30.85	44.00	52.58	55.61	55.74	47.98	39.29	19.80	17.19
2017	13.02	8.76	9.16	31.27	41.13	52.62	54.68	52.18	45.20	36.47	31.61	25.39
2018	12.08	20.39	21.16	28.69	38.36	50.78	55.65	53.15	50.66	41.21	26.33	13.69
2019	19.11	27.92	28.52	27.39	41.78	52.70	57.56	55.26	48.90	37.21	23.83	12.64
2020	1.77	4.08	19.99	28.40	43.25	51.15	51.59	53.41	45.72	37.55	28.36	15.24
2021	10.51	7.72	14.64	25.37	38.58	48.75	51.41	48.67	45.00	25.86	11.40	20.96
2022	0.21	15.31	19.83	29.20	38.71	51.37	52.80	49.79	48.68	41.00	22.97	20.81
2023	M	13.47	16.49	16.35	35.73	47.93	M	52.45	44.41	34.62	26.91	9.35
2024	14.04	17.91	M	M	34.04	47.30	51.30	49.11	44.14	34.99	26.53	15.39
2025	15.64	33.18	M	M	M	M	M	M	M	M	M	M
2026	-16.85	M	M	M	M	49.53	51.77	54.76	M	M	M	M
NCEI Climatology	5.61	9.06	9.61	22.65	37.26	48.31	52.00	50.20	43.10	30.45	18.25	9.10

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
2005	M	M	M	M	M	M	M	M	85.8%	85.5%	81.2%	86.3%
2006	81.6%	83.8%	80.5%	82.3%	84.8%	84.5%	83.4%	82.8%	88.2%	85.9%	82.8%	81.5%
2007	85.8%	80.8%	77.5%	86.3%	88.1%	84.8%	82.6%	82.0%	84.6%	85.9%	85.4%	79.9%
2008	82.1%	78.1%	81.6%	82.8%	87.4%	80.8%	81.8%	83.7%	85.8%	79.4%	83.8%	83.8%
2009	80.1%	83.4%	79.1%	86.7%	92.9%	80.8%	77.0%	82.5%	87.2%	84.0%	81.4%	81.3%
2010	78.3%	85.1%	78.5%	85.3%	88.1%	85.2%	85.4%	86.9%	80.7%	86.1%	85.9%	82.0%
2011	80.8%	81.0%	76.7%	86.4%	83.1%	80.3%	86.2%	86.5%	85.7%	83.7%	79.0%	84.6%
2012	75.9%	85.5%	82.9%	89.4%	88.6%	85.8%	86.5%	85.4%	84.3%	84.6%	79.3%	81.4%
2013	86.0%	82.5%	83.8%	83.6%	86.7%	86.8%	86.5%	85.8%	84.0%	89.5%	84.0%	83.9%
2014	87.1%	83.9%	80.9%	84.9%	84.0%	86.1%	84.0%	84.0%	83.2%	82.7%	87.3%	88.5%
2015	82.1%	84.5%	85.2%	89.9%	88.1%	81.5%	87.9%	89.1%	87.6%	94.1%	86.0%	87.8%
2016	89.1%	89.3%	85.1%	92.5%	82.7%	79.3%	82.7%	85.5%	84.1%	78.5%	84.0%	84.2%
2017	83.4%	81.6%	77.2%	85.0%	78.7%	79.9%	80.5%	82.4%	85.4%	88.4%	85.9%	90.0%
2018	81.5%	80.8%	86.5%	85.3%	86.1%	81.9%	84.5%	86.1%	85.6%	89.6%	88.4%	84.9%
2019	90.6%	89.8%	87.0%	82.1%	87.4%	82.4%	84.5%	88.0%	91.1%	88.3%	89.7%	88.8%
2020	83.0%	82.9%	88.9%	93.1%	86.4%	88.5%	93.2%	93.5%	88.3%	93.6%	94.1%	88.9%
2021	91.3%	86.4%	88.7%	89.8%	87.7%	91.5%	94.3%	91.1%	90.9%	83.3%	88.0%	92.5%
2022	80.9%	92.2%	90.5%	88.3%	87.3%	87.5%	91.7%	95.0%	95.4%	M	M	89.1%
2023	M	88.8%	87.5%	83.6%	90.6%	88.6%	M	93.3%	90.1%	85.7%	92.5%	85.3%
2024	87.5%	90.2%	M	M	88.8%	87.2%	89.2%	93.8%	90.0%	85.0%	95.9%	80.9%
2025	86.0%	99.2%	M	M	M	M	M	M	M	M	M	M
2026	78.1%	M	M	M	M	85.1%	87.8%	93.6%	M	M	M	M