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 (USC00383990) 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	0.00	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	2.31	3.30	1.98	0.19	2.89	3.12	3.89	4.24	6.59	4.85	5.23
2016	1.28	4.41	2.96	2.30	5.11	4.13	2.31	1.08	5.68	4.00	1.23	3.47
2017	4.10	1.38	1.69	5.44	5.11	3.59	5.31	3.85	3.68	1.53	0.52	2.98
2018	2.50	1.77	2.82	3.51	4.33	3.75	3.20	1.30	15.06	5.66	2.51	6.79
2019	2.93	1.35	3.21	3.13	1.24	2.26	4.34	3.27	1.70	3.96	2.09	8.06
2020	6.24	4.42	3.86	2.57	9.45	4.19	8.11	5.47	9.09	1.54	2.59	3.06
2021	5.21	5.68	3.66	0.36	2.44	6.05	5.98	6.16	3.18	1.12	0.34	1.59
2022	4.50	1.97	5.78	3.43	2.80	1.14	12.09	4.99	6.37	0.67	2.26	2.17
2023	4.01	2.93	1.97	5.91	1.66	3.08	5.09	5.55	2.82	0.94	2.38	3.29
2024	1.58	1.63	6.19	2.51	4.05	1.27	5.90	5.62	6.05	M	0.71	0.99
NCEI Climatology	3.73	3.47	3.76	2.98	3.90	4.64	5.91	5.20	4.92	3.41	2.91	3.81

Average Wind Speed [MPH]

Year	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
2009	M	M	M	M	4.6	2.9	3.4	2.5	4.1	3.8	4.0	3.9
2010	3.8	3.7	4.0	3.8	3.7	3.0	2.9	2.6	3.0	3.0	5.0	5.0
2011	4.8	5.7	5.8	6.0	4.6	4.6	2.8	2.6	2.5	4.3	3.9	4.1
2012	4.1	3.8	3.9	3.9	4.2	3.5	2.6	2.1	2.8	3.5	3.7	3.4
2013	3.2	4.0	4.2	4.0	3.2	2.0	1.7	2.2	3.5	3.4	4.8	3.5
2014	4.1	5.2	5.4	6.4	4.0	3.9	4.1	3.7	4.3	3.8	5.5	3.6
2015	3.9	5.4	5.1	5.0	4.5	4.0	3.9	3.5	5.1	5.6	4.0	3.9
2016	4.2	5.7	5.1	5.8	4.4	4.2	3.8	3.9	4.4	4.2	3.5	4.0
2017	4.4	4.5	5.4	5.5	4.4	3.9	3.7	3.9	4.6	4.4	3.6	4.0
2018	4.4	5.0	5.2	5.7	4.0	3.5	4.0	3.5	4.6	3.9	4.6	4.2
2019	4.3	4.4	4.8	5.0	3.8	4.1	3.7	3.1	4.1	4.2	4.2	4.7
2020	4.7	4.8	4.5	4.5	3.4	2.6	1.9	2.1	4.3	3.4	3.7	2.5
2021	3.2	4.9	5.2	4.0	3.9	3.8	2.5	2.5	2.7	3.0	3.8	3.6
2022	4.8	5.2	5.3	4.6	4.6	2.0	1.9	1.1	3.0	4.0	5.1	3.9
2023	3.1	4.2	3.9	4.2	4.6	3.4	2.0	2.7	2.5	1.9	3.0	3.2
2024	4.3	4.6	4.4	3.8	1.8	3.2	2.7	3.4	4.6	2.7	3.1	3.5
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	75.71	81.47	89.90	90.35	90.30	84.80	72.53	64.88	51.38
2010	52.13	49.94	64.81	79.34	84.37	92.60	91.34	90.53	87.80	75.90	64.58	46.57
2011	48.37	61.44	65.10	77.18	81.94	92.18	93.37	91.52	85.64	73.46	68.60	63.35
2012	60.39	62.29	76.30	76.70	84.61	87.80	93.20	87.68	84.65	74.21	63.02	62.14
2013	60.86	57.20	61.61	75.68	80.83	88.28	88.85	87.10	85.40	75.43	63.92	61.21
2014	50.84	57.97	62.43	77.24	85.36	91.16	90.65	89.37	83.36	77.82	M	58.13
2015	54.88	51.09	66.49	75.80	85.25	93.62	94.19	90.24	84.50	73.05	65.78	67.19
2016	51.16	56.08	71.08	73.16	78.02	88.36	92.33	90.68	85.70	77.60	66.80	55.46
2017	59.41	67.61	66.95	77.66	80.89	85.40	89.54	87.97	84.62	76.54	65.24	54.82
2018	51.05	66.07	60.97	72.26	84.26	90.74	90.47	90.24	87.86	74.79	59.31	56.15
2019	53.83	61.83	63.18	75.08	86.52	87.32	92.33	88.76	90.32	79.67	60.74	59.12
2020	59.23	60.49	69.20	74.66	78.57	85.46	91.28	88.50	81.92	77.00	69.08	54.82
2021	53.54	55.34	67.59	75.32	80.83	85.64	88.38	88.09	83.60	76.83	63.50	64.69
2022	52.44	62.73	69.22	75.26	82.69	90.02	88.96	87.05	83.42	72.24	66.44	54.30
2023	59.87	65.43	67.36	75.38	77.70	84.80	90.47	90.18	83.80	83.36	69.62	60.28
2024	56.33	60.86	69.97	76.04	82.28	90.20	90.82	87.74	83.00	76.77	67.76	57.04
NCEI Climatology	54.90	58.91	66.40	75.71	82.40	88.71	91.90	90.19	84.81	75.59	65.30	57.60

Average Daily Low Temperature [F]

Year	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
2009	M	M	M	48.07	59.87	66.68	67.19	68.87	61.94	51.63	44.06	33.92
2010	31.67	30.14	40.07	49.10	61.61	69.56	70.21	70.44	63.86	49.30	41.18	26.89
2011	29.50	37.59	41.75	51.50	58.77	67.58	69.86	69.22	64.70	49.94	44.18	41.29
2012	38.62	39.88	52.67	52.88	63.65	64.82	72.66	70.55	66.80	53.72	39.74	42.97
2013	40.30	36.76	38.91	53.96	59.12	69.32	72.35	69.57	64.16	55.46	41.42	40.88
2014	30.98	38.36	39.20	52.52	61.67	69.32	71.08	69.97	67.28	55.17	M	38.33
2015	32.29	30.33	44.14	53.30	59.06	68.48	70.61	68.75	65.12	52.61	48.02	49.94
2016	33.28	37.59	48.55	49.16	58.04	67.63	70.79	70.94	66.32	54.40	41.90	36.70
2017	39.08	41.19	41.35	53.90	58.42	65.36	69.34	68.70	62.06	53.48	39.80	35.66
2018	27.47	45.11	38.50	45.68	61.85	67.28	68.06	68.41	68.42	54.01	40.88	38.50
2019	35.83	39.71	40.88	50.78	61.67	65.18	69.05	68.24	67.52	58.07	39.44	40.40
2020	40.54	41.06	50.66	49.82	56.91	66.92	71.83	71.72	64.28	56.68	47.12	33.68
2021	35.19	36.63	45.18	47.36	56.21	67.58	69.86	70.90	63.14	56.04	38.36	43.73
2022	31.01	39.07	45.24	49.76	61.73	67.22	71.60	69.74	63.32	49.59	47.24	35.48
2023	39.95	44.02	45.53	51.26	56.91	64.34	71.54	69.97	62.87	57.20	45.62	39.03
2024	34.50	38.70	45.94	51.50	61.38	66.62	71.25	68.52	65.60	51.86	47.18	33.80
NCEI Climatology	31.91	34.17	40.00	48.10	57.70	66.50	70.31	68.89	63.11	50.60	39.81	34.60

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

Year	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
2009	M	M	M	61.89	70.67	78.29	78.77	79.58	73.37	62.08	54.47	42.65
2010	41.90	40.04	52.44	64.22	72.99	81.08	80.77	80.48	75.83	62.60	52.88	36.73
2011	38.94	49.52	53.43	64.34	70.35	79.88	81.62	80.37	75.17	61.70	56.39	52.32
2012	49.51	51.09	64.49	64.79	74.13	76.31	82.93	79.12	75.72	63.96	51.38	52.55
2013	50.58	46.98	50.26	64.82	69.97	78.80	80.60	78.34	74.78	65.45	52.67	51.05
2014	40.91	48.17	50.81	64.88	73.52	80.24	80.86	79.67	75.32	66.50	M	48.23
2015	43.58	40.71	55.31	64.55	72.15	81.05	82.40	79.50	74.81	62.83	56.90	58.56
2016	42.22	46.83	59.81	61.16	68.03	77.99	81.56	80.81	76.01	66.00	54.35	46.08
2017	49.25	54.40	54.15	65.78	69.65	75.38	79.44	78.34	73.34	65.01	52.52	45.24
2018	39.26	55.59	49.74	58.97	73.05	79.01	79.26	79.32	78.14	64.40	50.09	47.33
2019	44.83	50.77	52.03	62.93	74.10	76.25	80.69	78.50	78.92	68.87	50.09	49.76
2020	49.88	50.78	59.93	62.24	67.74	76.19	81.56	80.11	73.10	66.84	58.10	44.25
2021	44.37	45.98	56.39	61.34	68.52	76.61	79.12	79.50	73.37	66.43	50.93	54.21
2022	41.73	50.90	57.23	62.51	72.21	78.62	80.28	78.39	73.37	60.92	56.84	44.89
2023	49.91	54.72	56.45	63.32	67.30	74.57	81.01	80.08	73.33	70.28	57.62	49.65
2024	45.41	49.78	57.95	63.77	71.83	78.41	81.04	78.13	74.30	64.31	57.47	45.42
NCEI Climatology	43.40	46.54	53.20	61.90	70.05	77.60	81.10	79.54	73.96	63.10	52.55	46.10

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
2009	M	M	M	M	80.9%	77.2%	76.6%	81.3%	74.8%	83.3%	84.7%	76.9%
2010	73.4%	74.3%	67.3%	64.3%	78.6%	79.2%	82.0%	83.3%	68.3%	69.4%	69.3%	66.4%
2011	72.1%	64.3%	67.7%	66.3%	75.2%	67.9%	75.5%	74.6%	78.2%	69.3%	72.5%	71.6%
2012	67.7%	67.3%	68.1%	67.0%	72.2%	68.8%	75.9%	84.6%	79.9%	73.8%	66.4%	75.6%
2013	72.7%	69.2%	52.9%	67.1%	68.3%	77.7%	84.6%	79.4%	69.6%	75.1%	66.0%	76.3%
2014	58.5%	70.1%	64.5%	59.0%	62.7%	65.3%	49.4%	55.9%	62.7%	52.4%	M	72.4%
2015	62.1%	66.0%	68.7%	68.2%	65.1%	66.7%	67.4%	71.8%	74.8%	75.3%	76.7%	82.0%
2016	69.5%	66.9%	64.7%	59.6%	70.9%	69.7%	77.0%	76.2%	79.6%	72.2%	67.1%	73.8%
2017	73.8%	62.4%	59.1%	70.6%	70.7%	75.2%	77.9%	79.0%	73.1%	75.7%	72.4%	71.0%
2018	61.5%	78.0%	62.9%	63.3%	76.9%	75.5%	77.6%	77.6%	82.1%	79.8%	83.0%	84.3%
2019	76.4%	76.4%	69.4%	74.1%	74.3%	75.7%	77.9%	81.8%	73.2%	75.7%	72.9%	75.3%
2020	72.3%	73.3%	72.3%	62.5%	74.0%	79.8%	79.8%	84.8%	79.4%	79.0%	74.6%	76.8%
2021	76.0%	75.6%	63.7%	55.3%	62.3%	77.1%	78.6%	82.0%	74.6%	75.6%	60.3%	73.9%
2022	63.7%	66.3%	61.5%	59.6%	70.6%	64.7%	81.7%	79.6%	71.4%	70.8%	70.0%	72.7%
2023	73.4%	71.3%	62.2%	65.6%	65.9%	72.5%	79.3%	75.5%	74.8%	73.4%	66.3%	71.5%
2024	68.4%	61.4%	64.4%	65.1%	75.9%	69.5%	76.7%	77.8%	79.0%	67.6%	76.5%	68.0%