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 (USC00418996) 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
2009	M	M	M	M	0.02	1.25	1.28	1.67	3.35	5.98	1.30	2.99
2010	1.63	1.95	1.52	0.82	0.70	2.40	6.94	1.78	2.76	0.00	2.70	3.31
2011	2.89	0.15	0.53	0.03	0.14	0.64	2.04	0.34	0.82	1.62	1.54	2.94
2012	2.68	4.04	4.46	1.57	3.11	1.48	5.04	3.27	1.43	0.39	0.56	5.19
2013	2.28	1.57	0.66	3.41	2.29	2.50	2.05	2.55	3.38	4.79	2.81	0.26
2014	0.20	0.85	1.38	0.69	9.03	1.07	0.69	3.04	5.82	2.61	3.98	2.73
2015	3.00	0.62	4.60	0.22	7.86	2.57	0.19	3.58	4.81	9.48	2.66	2.23
2016	2.47	1.28	2.93	6.93	7.22	3.96	2.22	6.59	2.42	0.45	0.62	3.04
2017	3.48	2.39	5.84	2.28	3.89	5.75	2.04	29.45	3.62	1.00	0.81	2.92
2018	2.02	3.37	2.12	1.96	3.90	2.29	3.00	0.93	8.37	5.10	1.36	5.34
2019	3.61	3.33	0.07	1.56	8.35	7.25	1.45	0.73	7.29	2.86	1.97	0.66
2020	4.15	0.96	0.47	2.27	6.52	4.09	5.50	3.53	7.85	0.76	4.15	5.14
2021	1.80	0.23	1.44	2.56	9.14	6.42	6.16	0.96	3.20	4.29	1.35	1.62
2022	2.25	0.28	2.03	2.03	2.40	0.44	1.92	0.50	M	2.21	7.49	1.07
2023	1.04	0.23	0.22	2.22	4.49	2.27	0.86	0.10	2.30	1.67	4.63	1.89
2024	7.15	1.76	2.68	1.70	5.88	3.93	7.54	0.71	1.01	0.65	0.74	M
NCEI Climatology	4.12	3.15	3.43	3.63	4.93	4.63	3.81	4.47	4.88	5.24	4.05	3.92

Average Wind Speed [MPH]

Year	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
2009	M	M	M	M	M	3.8	3.7	3.0	3.5	5.4	4.0	6.2
2010	6.0	6.9	5.8	6.0	4.8	3.9	2.8	2.2	3.0	3.2	6.6	6.6
2011	6.3	7.8	6.6	7.7	7.6	6.0	3.1	3.4	5.0	4.7	6.8	6.6
2012	6.1	6.3	6.5	5.9	4.3	3.5	2.5	3.3	3.4	4.4	3.7	5.6
2013	6.2	5.7	0.0	5.9	6.3	3.4	3.5	3.5	3.9	3.7	6.1	5.1
2014	6.8	6.8	7.0	7.3	6.2	5.3	3.4	1.2	3.6	3.5	5.6	5.4
2015	5.2	5.8	4.9	4.9	5.9	3.7	3.6	3.0	3.0	5.1	5.2	5.5
2016	5.7	6.1	6.9	5.8	5.0	3.1	3.5	2.9	2.7	3.1	4.0	6.3
2017	6.2	6.4	6.1	6.0	5.8	4.5	2.7	4.9	3.1	3.6	3.8	5.6
2018	6.1	6.1	5.5	5.6	4.2	4.9	2.9	2.6	3.0	4.8	4.8	5.7
2019	5.4	6.1	5.6	6.3	6.0	3.7	3.2	2.7	4.0	5.0	4.9	4.3
2020	5.3	5.8	5.8	5.4	5.0	3.9	3.6	2.8	4.6	4.0	4.0	4.8
2021	5.3	6.3	6.2	6.0	5.6	3.4	2.2	2.4	3.2	3.4	3.9	4.4
2022	5.7	6.0	6.1	6.3	4.8	3.1	3.1	3.1	M	4.3	5.5	4.9
2023	5.7	5.8	6.1	5.7	3.5	3.4	2.8	3.6	2.9	4.6	4.0	4.2
2024	6.3	5.4	4.7	6.1	5.3	4.0	4.9	3.0	4.2	3.8	3.9	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
2009	M	M	M	M	86.85	94.18	96.65	95.65	86.49	79.63	71.99	57.93
2010	58.93	58.33	70.14	78.77	89.51	92.71	90.79	95.17	88.60	84.66	73.05	66.50
2011	61.46	66.03	75.58	83.30	86.75	94.40	95.46	99.41	93.56	82.40	73.94	63.12
2012	68.23	66.08	76.42	80.60	86.02	92.06	88.85	92.49	88.50	85.27	77.59	70.87
2013	65.16	68.96	72.66	75.36	83.73	93.24	93.11	93.66	90.66	81.22	68.64	61.63
2014	63.00	65.07	69.34	79.41	83.39	90.14	92.57	93.03	85.54	77.30	62.91	58.65
2015	54.74	65.29	73.55	81.93	86.60	86.90	87.33	98.06	87.21	83.17	73.26	70.15
2016	62.66	70.56	75.83	79.64	83.61	89.65	93.67	91.38	89.98	85.86	77.66	66.94
2017	69.95	75.62	76.89	80.95	84.51	88.91	92.29	90.22	88.52	82.38	77.20	63.15
2018	58.97	71.36	76.48	76.87	88.77	91.24	92.71	93.86	86.19	80.29	68.59	66.13
2019	63.20	65.71	69.48	78.38	84.10	88.90	91.39	93.93	91.20	81.05	69.77	68.32
2020	66.63	66.67	78.36	79.32	85.48	88.92	91.25	93.14	86.98	81.63	77.93	67.40
2021	65.68	61.67	75.35	77.98	83.38	91.10	91.22	93.68	89.63	84.58	72.16	76.93
2022	64.26	64.00	76.41	85.14	93.08	96.16	97.94	96.80	M	81.83	70.43	68.34
2023	70.20	71.78	77.34	78.87	86.72	94.79	98.12	102.32	96.66	81.89	71.43	68.49
2024	62.20	72.22	76.23	81.00	87.71	92.25	93.60	95.57	91.81	89.19	82.20	M
NCEI Climatology	62.70	66.68	72.41	78.90	85.40	90.40	92.10	93.29	89.19	82.09	72.30	65.09

Average Daily Low Temperature [F]

Year	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
2009	M	M	M	M	64.70	69.55	72.84	72.48	69.35	61.76	49.99	42.10
2010	39.08	39.78	47.37	59.17	67.63	73.68	74.77	74.49	70.92	56.83	49.44	43.63
2011	41.21	43.33	54.62	61.28	65.68	71.24	72.41	72.65	66.74	55.46	50.24	45.99
2012	46.17	51.80	58.25	61.34	65.76	71.34	72.97	73.95	67.35	57.91	48.19	46.80
2013	44.83	48.27	47.97	55.44	64.41	70.87	71.34	71.95	71.47	59.90	48.95	41.39
2014	36.06	45.06	48.44	57.75	61.76	71.95	71.65	72.93	68.59	54.02	43.54	44.29
2015	37.30	45.31	55.99	66.21	70.83	67.95	67.39	72.44	68.49	60.98	54.68	49.81
2016	42.17	45.62	56.40	59.62	66.37	72.33	74.15	73.61	71.97	61.58	54.48	50.84
2017	48.87	55.50	58.02	59.56	64.03	71.62	72.71	72.96	67.56	58.65	54.55	42.32
2018	36.93	54.47	55.77	54.14	65.72	72.20	71.40	72.03	71.84	62.89	47.58	44.67
2019	48.36	55.75	52.91	57.35	69.10	71.98	73.34	73.87	72.14	60.73	48.20	43.01
2020	47.75	45.54	60.93	58.95	65.01	70.20	74.00	73.06	70.43	59.71	54.59	44.23
2021	44.73	43.85	54.07	59.71	68.50	73.72	74.30	74.37	67.98	63.53	50.52	58.24
2022	41.66	40.43	48.66	62.58	69.71	73.02	74.27	73.82	M	56.37	53.16	48.74
2023	48.58	51.63	58.54	59.09	68.23	73.51	75.46	76.52	72.51	62.41	52.05	47.29
2024	41.51	51.01	57.46	63.31	71.96	75.39	75.65	76.27	70.90	62.27	71.50	M
NCEI Climatology	43.20	47.40	52.90	58.31	66.30	72.11	74.20	74.10	69.99	60.70	51.80	45.61

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

Year	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
2009	M	M	M	M	75.78	81.86	84.74	84.07	77.92	70.69	60.99	50.01
2010	49.00	49.06	58.75	68.97	78.57	83.20	82.78	84.83	79.76	70.74	61.25	55.07
2011	51.33	54.68	65.10	72.29	76.22	82.82	83.94	86.03	80.15	68.93	62.09	54.56
2012	57.20	58.94	67.33	70.97	75.89	81.70	80.91	83.22	77.92	71.59	62.89	58.83
2013	54.99	58.61	60.32	65.40	74.07	82.06	82.23	82.81	81.07	70.56	58.80	51.51
2014	49.53	55.07	58.89	68.58	72.58	81.04	82.11	82.98	77.07	65.66	53.22	51.47
2015	46.02	55.30	64.77	74.07	78.72	77.42	77.36	84.19	77.85	72.08	63.97	59.98
2016	52.42	58.09	66.12	69.63	74.99	80.99	83.91	82.50	80.98	73.72	66.07	58.89
2017	59.41	65.56	67.45	70.25	74.27	80.27	82.50	81.59	78.04	70.51	65.88	52.73
2018	47.95	62.92	66.12	65.51	77.24	81.72	82.05	82.95	79.02	71.59	58.08	55.40
2019	55.78	60.73	61.20	67.86	76.60	80.44	82.36	83.90	81.67	70.89	58.98	55.66
2020	57.19	56.11	69.64	69.13	75.24	79.56	82.62	83.10	78.71	70.67	66.26	55.81
2021	55.20	52.76	64.71	68.84	75.94	82.41	82.76	84.03	78.81	74.05	61.34	67.58
2022	52.96	52.21	62.53	73.86	81.39	84.59	86.10	85.31	M	69.10	61.80	58.54
2023	59.39	61.70	67.94	68.98	77.47	84.15	86.79	89.42	84.58	72.15	61.74	57.89
2024	51.85	61.62	66.85	72.16	79.84	83.82	84.63	85.92	81.36	75.73	76.85	M
NCEI Climatology	52.95	57.04	62.65	68.61	75.85	81.25	83.15	83.69	79.59	71.40	62.05	55.35

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
2009	M	M	M	M	M	72.3%	74.9%	76.7%	86.6%	86.3%	79.7%	59.8%
2010	45.3%	76.7%	73.3%	76.6%	74.0%	77.1%	81.4%	75.5%	79.7%	67.0%	75.8%	70.7%
2011	73.6%	76.3%	75.4%	70.5%	68.6%	66.4%	72.7%	68.7%	66.0%	70.0%	72.4%	80.9%
2012	75.1%	80.8%	82.9%	78.2%	76.6%	74.8%	82.8%	77.1%	78.8%	67.8%	69.6%	76.0%
2013	80.0%	72.4%	M	78.6%	76.2%	75.2%	74.8%	76.8%	78.4%	82.3%	76.3%	79.5%
2014	67.9%	81.3%	79.1%	74.8%	76.3%	81.3%	79.3%	80.8%	85.0%	81.0%	78.0%	87.7%
2015	81.4%	83.0%	84.3%	86.1%	86.1%	83.4%	79.8%	74.9%	82.4%	76.1%	82.1%	80.5%
2016	76.3%	68.1%	77.7%	77.7%	81.3%	82.5%	79.4%	83.4%	81.7%	78.4%	77.3%	78.0%
2017	75.0%	77.7%	77.0%	76.3%	74.6%	80.2%	80.4%	82.5%	79.1%	74.0%	79.7%	81.3%
2018	71.8%	87.0%	73.8%	75.3%	79.1%	81.9%	79.5%	79.3%	89.6%	85.2%	80.4%	75.8%
2019	77.4%	83.9%	76.2%	79.4%	85.0%	82.9%	80.7%	81.9%	82.4%	81.6%	82.0%	77.2%
2020	81.9%	80.3%	84.8%	81.1%	81.0%	81.2%	85.6%	81.3%	82.3%	83.2%	77.3%	77.5%
2021	72.5%	78.8%	76.1%	76.0%	85.6%	82.1%	83.3%	81.6%	78.6%	76.5%	78.7%	84.3%
2022	68.6%	74.4%	66.1%	73.1%	75.5%	74.1%	74.8%	76.9%	M	70.0%	79.4%	76.0%
2023	75.5%	79.3%	74.1%	78.2%	80.2%	76.9%	75.3%	66.3%	72.7%	76.4%	79.4%	76.5%
2024	75.5%	73.9%	78.1%	79.6%	85.0%	81.8%	81.7%	77.4%	76.9%	70.2%	89.4%	M