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 (USC00325479) 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
2010	M	M	M	M	M	M	M	M	M	M	3.15	8.96
2011	2.04	0.00	17.97	21.19	3.06	1.82	6.31	3.09	1.29	0.65	1.46	2.36
2012	1.87	8.79	1.62	0.77	1.59	2.05	3.54	1.36	0.03	1.37	13.87	15.32
2013	3.92	1.31	6.46	54.99	8.56	1.61	0.83	0.54	3.30	12.20	1.23	5.12
2014	M	M	8.91	8.37	0.94	3.41	0.53	4.02	0.77	0.05	5.85	1.01
2015	7.96	2.35	0.96	0.69	8.42	4.05	2.11	1.21	0.13	1.14	1.78	14.56
2016	1.44	2.41	7.81	4.71	0.83	2.24	2.91	2.52	0.73	0.15	24.66	17.03
2017	13.89	6.86	2.82	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
2026	M	M	M	M	M	M	M	M	M	M	M	M
NCEI Climatology	0.38	0.42	0.59	1.27	2.59	3.44	3.24	2.19	1.64	1.47	0.63	0.52

Average Wind Speed [MPH]

Year	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
2010	M	M	M	M	M	M	M	M	M	M	15.0	12.0
2011	12.2	13.6	12.0	11.9	13.1	11.0	8.7	8.6	10.1	11.2	11.6	12.2
2012	12.4	10.0	12.5	13.1	11.7	11.7	8.8	8.6	9.9	12.4	10.8	9.0
2013	12.6	10.9	11.2	12.6	11.6	10.1	8.8	7.8	9.2	11.5	11.0	13.2
2014	M	M	12.3	13.4	11.6	10.8	9.0	7.9	10.1	12.1	12.7	9.8
2015	12.3	11.2	12.0	12.5	11.8	8.8	10.1	8.6	10.0	11.7	10.8	10.4
2016	10.5	11.3	12.1	13.4	11.2	11.4	10.0	10.2	11.5	11.3	11.3	15.9
2017	12.1	10.8	12.0	10.6	11.5	12.1	9.6	7.9	10.1	11.4	12.0	12.3
2018	11.0	10.7	10.5	13.1	9.3	10.3	8.9	8.7	10.6	11.1	10.6	10.8
2019	12.2	10.5	12.0	11.5	10.9	9.3	8.4	9.9	10.8	14.1	11.4	11.2
2020	11.3	10.6	11.9	12.2	11.9	11.4	8.8	9.6	11.6	12.0	11.4	11.1
2021	11.2	11.4	12.0	12.0	11.2	10.5	10.1	10.5	10.5	12.5	11.9	10.9
2022	12.8	14.5	13.5	16.2	12.9	11.0	9.2	9.3	10.5	11.1	13.6	12.2
2023	8.8	11.8	11.8	12.7	9.3	8.1	8.6	8.8	8.6	11.4	10.6	11.3
2024	11.4	11.0	11.3	13.7	11.3	11.1	8.5	10.1	11.1	10.0	10.4	11.0
2025	13.4	10.6	11.5	11.9	11.8	10.0	9.0	9.0	9.1	12.4	10.2	12.1
2026	12.2	11.5	11.2	12.6	12.0	11.3	8.8	8.8	10.2	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
2010	M	M	M	M	M	M	M	M	M	M	22.03	17.19
2011	17.54	20.43	28.11	47.84	61.50	71.90	80.95	79.55	71.36	60.22	41.31	34.47
2012	33.34	32.93	56.39	58.64	67.25	77.48	86.29	80.06	75.20	51.86	36.80	23.23
2013	23.17	29.00	31.77	43.58	66.32	74.12	80.48	81.99	74.48	49.82	37.76	16.70
2014	M	M	39.96	51.56	65.97	71.18	77.81	75.55	71.00	58.59	29.84	28.40
2015	28.46	22.16	48.66	57.38	63.41	75.32	82.05	82.23	77.06	59.75	43.52	28.63
2016	24.57	37.40	50.29	55.10	68.58	78.56	81.59	80.89	69.92	57.49	51.14	18.24
2017	18.30	28.85	38.56	55.28	68.87	78.62	87.22	75.95	68.96	55.85	43.57	27.84
2018	21.74	17.53	34.84	47.80	73.05	78.56	82.75	81.82	75.74	57.76	30.74	30.95
2019	20.15	5.90	29.70	52.70	59.81	75.14	80.31	75.94	68.66	46.59	36.14	25.55
2020	22.13	29.77	42.97	51.08	64.05	80.12	82.69	83.50	70.58	47.10	46.64	34.90
2021	31.36	18.82	50.41	54.32	65.68	84.38	87.68	83.97	76.58	59.00	45.44	25.09
2022	23.81	26.66	40.88	42.92	64.23	76.46	82.46	82.75	74.84	59.23	30.50	14.35
2023	21.20	26.41	23.17	45.38	72.24	79.58	79.44	78.80	72.80	53.66	42.32	36.12
2024	20.74	37.21	36.01	55.21	66.08	74.00	82.63	78.10	81.02	64.11	38.06	28.98
2025	21.61	16.83	46.92	55.16	67.71	74.54	81.82	78.51	75.20	59.87	43.22	27.01
2026	24.05	36.95	46.57	51.92	68.35	74.42	89.02	82.69	81.25	M	M	M
NCEI Climatology	22.50	27.27	39.60	54.10	66.51	76.00	82.61	81.81	72.10	56.11	39.89	27.40

Average Daily Low Temperature [F]

Year	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
2010	M	M	M	M	M	M	M	M	M	M	6.94	5.64
2011	1.92	5.06	13.88	31.46	42.10	52.10	60.68	57.03	44.96	38.10	22.01	19.47
2012	13.30	11.33	31.54	35.60	43.32	54.38	61.55	54.56	43.76	32.75	20.48	8.77
2013	6.22	13.27	12.78	24.02	42.86	54.02	58.19	58.13	51.14	33.14	18.20	0.40
2014	M	M	20.65	28.88	43.15	52.64	55.86	57.20	46.46	36.12	12.08	12.90
2015	11.50	2.30	23.52	32.54	42.05	54.08	59.12	55.81	51.26	38.10	23.72	16.26
2016	9.35	20.33	25.73	31.88	43.44	54.20	59.12	55.81	48.98	37.92	29.42	4.36
2017	5.58	15.03	20.50	32.06	42.10	53.06	61.26	55.40	48.38	45.50	22.31	10.96
2018	6.32	-0.90	20.35	27.27	48.66	57.26	58.77	56.10	52.52	32.34	17.12	15.10
2019	4.94	-8.82	13.50	32.66	39.32	52.22	59.52	55.56	49.88	31.01	19.40	10.57
2020	7.09	12.45	22.54	25.76	40.88	54.68	57.90	57.49	45.56	28.81	21.80	15.34
2021	18.12	-1.94	23.87	28.28	40.83	56.42	62.83	57.66	48.98	39.14	23.12	7.50
2022	1.46	2.24	18.47	26.24	42.34	52.34	59.75	58.25	49.10	34.79	13.94	0.41
2023	6.92	8.21	5.70	26.18	47.56	57.02	55.98	57.32	51.26	34.21	22.52	19.46
2024	6.74	17.79	17.19	34.42	42.16	51.20	59.58	56.21	51.98	36.82	21.02	12.95
2025	2.97	-2.97	23.00	31.94	44.95	52.82	58.54	57.20	52.73	39.61	24.56	7.09
2026	6.45	17.28	21.26	28.94	42.97	51.62	62.43	55.86	57.36	M	M	M
NCEI Climatology	2.70	6.58	18.29	30.40	42.61	53.00	58.00	55.50	45.81	32.10	19.10	8.40

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

Year	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
2010	M	M	M	M	M	M	M	M	M	M	14.48	11.42
2011	9.73	12.75	21.00	39.65	51.80	62.00	70.82	68.29	58.16	49.16	31.66	26.97
2012	23.32	22.13	43.96	47.12	55.28	65.93	73.92	67.31	59.48	42.31	28.64	16.00
2013	14.70	21.13	22.27	33.80	54.59	64.07	69.34	70.06	62.81	41.48	27.98	8.55
2014	M	M	30.30	40.22	54.56	61.91	66.84	66.37	58.73	47.36	20.96	20.65
2015	19.98	12.23	36.09	44.96	52.73	64.70	70.58	69.02	64.16	48.93	33.62	22.45
2016	16.96	28.87	38.01	43.49	56.01	66.38	70.35	68.35	59.45	47.71	40.28	11.30
2017	11.94	21.94	29.53	43.67	55.49	65.84	74.24	65.68	58.67	50.68	32.94	19.40
2018	14.03	8.31	27.59	37.53	60.86	67.91	70.76	68.96	64.13	45.05	23.93	23.03
2019	12.55	-1.46	21.60	42.68	49.56	63.68	69.92	65.75	59.27	38.80	27.77	18.06
2020	14.61	21.11	32.75	38.42	52.47	67.40	70.29	70.50	58.07	37.95	34.22	25.12
2021	24.74	8.44	37.14	41.30	53.25	70.40	75.26	70.82	62.78	49.07	34.28	16.29
2022	12.64	14.45	29.68	34.58	53.28	64.40	71.11	70.50	61.97	47.01	22.22	7.38
2023	14.06	17.31	14.44	35.78	59.90	68.30	67.71	68.06	62.03	43.93	32.42	27.79
2024	13.74	27.50	26.60	44.82	54.12	62.60	71.11	67.16	66.50	50.46	29.54	20.97
2025	12.29	6.93	34.96	43.55	56.33	63.68	70.18	67.85	63.97	49.74	33.89	17.05
2026	15.25	27.11	33.92	40.43	55.66	63.02	75.72	69.28	69.31	M	M	M
NCEI Climatology	12.60	16.92	28.95	42.25	54.56	64.50	70.30	68.65	58.95	44.11	29.49	17.90

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
2010	M	M	M	M	M	M	M	M	M	M	83.0%	86.6%
2011	83.5%	80.1%	87.0%	77.8%	70.3%	79.5%	85.2%	79.9%	69.9%	72.3%	70.2%	84.5%
2012	75.7%	80.1%	68.0%	68.7%	69.0%	70.5%	71.5%	65.4%	45.7%	75.6%	89.6%	90.9%
2013	85.0%	89.4%	88.9%	75.7%	67.1%	77.3%	71.6%	70.3%	73.9%	75.8%	72.9%	78.3%
2014	M	M	70.7%	64.1%	62.3%	74.2%	69.7%	81.4%	69.7%	64.8%	76.5%	84.8%
2015	77.8%	75.9%	65.5%	55.1%	67.8%	73.6%	70.4%	65.2%	64.0%	67.6%	71.3%	84.3%
2016	84.9%	76.6%	66.8%	69.3%	61.3%	64.2%	71.3%	65.4%	70.2%	72.8%	72.6%	81.2%
2017	82.5%	82.0%	77.2%	65.3%	55.6%	57.2%	60.8%	73.9%	71.0%	73.5%	68.8%	73.6%
2018	81.2%	76.9%	90.7%	68.7%	67.7%	75.2%	72.9%	72.6%	100.0%	67.1%	93.6%	89.8%
2019	88.0%	84.1%	90.2%	73.6%	74.7%	75.9%	79.4%	82.2%	86.8%	79.4%	83.8%	90.9%
2020	87.4%	84.1%	81.0%	65.0%	72.0%	67.4%	75.1%	68.8%	64.5%	74.1%	73.9%	81.1%
2021	86.5%	75.5%	70.3%	63.3%	66.7%	58.0%	67.0%	65.7%	65.1%	76.9%	75.7%	80.9%
2022	83.2%	76.3%	74.0%	79.5%	74.3%	70.8%	77.8%	75.7%	67.0%	65.1%	81.7%	88.1%
2023	95.9%	86.7%	92.2%	78.8%	72.2%	78.0%	76.6%	82.4%	82.9%	83.4%	79.2%	89.8%
2024	86.9%	88.2%	82.7%	70.0%	77.4%	75.7%	81.1%	82.8%	69.3%	63.8%	88.2%	89.3%
2025	81.4%	78.6%	72.4%	71.2%	71.4%	80.1%	78.7%	84.9%	82.5%	81.7%	83.5%	90.6%
2026	85.1%	86.8%	82.5%	72.6%	63.7%	78.3%	74.8%	72.9%	77.1%	M	M	M