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
1998	M	0.00	0.00	0.00	0.00	0.00	M	M	0.00	0.00	0.00	0.00
1999	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00
2000	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	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	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00
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	M
2007	M	0.00	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	M	M	M	M	M	M	M	M	M	M	M
2011	M	M	M	M	M	M	M	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
2026	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
1998	M	15.8	19.0	15.4	16.5	20.2	M	M	16.4	14.5	13.3	14.0
1999	15.1	15.0	13.6	12.4	17.6	21.6	24.6	22.9	15.1	15.2	14.2	10.1
2000	16.6	15.6	14.0	13.5	17.2	24.8	22.8	26.0	18.4	15.6	9.4	13.9
2001	12.7	14.9	12.2	12.7	19.4	20.4	25.8	23.8	17.6	19.9	14.5	16.4
2002	15.1	10.5	13.7	13.5	16.1	19.2	18.8	19.3	10.1	12.3	11.3	15.3
2003	13.6	18.4	16.4	16.6	15.4	21.2	25.0	24.2	18.6	13.2	11.1	14.4
2004	13.7	15.2	14.9	13.7	15.1	17.7	23.4	20.9	19.7	11.4	11.4	11.3
2005	13.7	14.6	13.3	16.1	14.5	21.0	22.7	21.4	17.7	16.8	16.3	13.6
2006	15.2	13.8	14.0	16.8	16.9	22.1	28.6	20.2	17.4	10.1	9.5	10.0
2007	10.5	11.5	12.0	14.6	9.1	17.1	22.9	22.5	20.0	14.3	12.1	14.3
2008	13.5	14.2	13.1	12.1	16.6	22.0	27.1	26.1	18.6	14.8	11.7	12.7
2009	14.5	14.6	13.9	13.7	14.4	16.9	23.1	25.9	20.3	12.9	14.1	13.1
2010	15.1	15.0	15.5	14.6	16.2	19.2	27.3	24.2	20.3	16.2	9.8	14.9
2011	15.4	13.8	13.7	16.0	14.1	20.3	21.6	25.4	20.4	14.6	16.8	13.0
2012	15.8	16.4	15.7	12.8	13.9	21.3	26.1	25.8	19.7	11.5	14.1	12.3
2013	15.1	16.6	13.6	16.7	14.4	17.9	28.1	24.4	18.0	15.4	12.0	13.6
2014	9.4	11.8	13.8	10.2	14.6	17.0	21.2	22.4	15.8	14.9	12.7	12.9
2015	18.1	19.3	14.4	14.4	14.4	18.7	22.3	19.9	14.1	15.5	14.2	15.6
2016	15.1	14.6	15.8	12.0	14.9	16.3	26.8	24.8	18.4	16.1	11.8	16.0
2017	14.6	13.1	13.8	13.0	13.4	17.9	22.9	22.6	16.4	15.4	11.1	12.7
2018	17.6	13.1	13.2	13.1	14.4	13.3	20.5	22.6	19.6	14.1	13.5	15.8
2019	15.9	13.9	13.4	13.5	11.8	18.3	20.1	22.8	21.1	14.4	9.3	14.0
2020	15.7	15.0	15.1	15.7	14.4	15.0	26.0	24.0	19.1	10.6	14.4	13.2
2021	13.8	16.0	17.6	15.0	15.9	25.5	24.9	24.0	22.4	17.1	13.9	14.2
2022	15.5	16.2	14.6	14.1	16.8	21.6	26.9	19.9	17.6	19.9	14.5	13.3
2023	13.8	13.1	15.6	14.1	15.4	17.9	22.0	18.3	18.2	13.5	12.5	12.0
2024	15.7	14.8	13.9	18.0	16.8	21.9	23.8	20.6	17.8	15.2	14.3	13.6
2025	9.8	15.8	14.4	14.8	14.6	25.9	20.6	21.8	21.5	12.2	12.2	13.4
2026	16.1	15.3	14.0	14.3	14.3	19.7	24.2	23.2	19.3	11.8	M	M

Average Daily High Temperature [F]

Year	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
1998	M	60.80	58.94	67.40	70.61	78.24	M	M	79.40	76.30	69.32	60.68
1999	60.68	60.16	62.77	67.28	73.40	80.42	82.86	84.44	80.48	76.65	68.00	64.69
2000	55.57	58.07	59.93	65.66	72.82	78.02	83.50	81.82	80.66	72.94	70.04	63.18
2001	61.32	60.48	66.78	67.22	73.57	79.46	83.50	84.66	81.98	75.26	67.46	59.52
2002	58.01	62.86	63.76	66.45	72.76	80.66	85.65	85.59	80.96	74.91	70.46	61.32
2003	62.48	55.34	59.29	64.70	75.32	80.42	84.14	84.20	79.70	75.61	68.36	61.96
2004	57.78	58.81	62.19	66.02	70.96	78.56	82.63	84.43	79.58	76.71	68.36	62.60
2005	60.02	56.94	62.25	65.96	73.46	78.80	84.03	84.61	80.30	72.47	64.70	61.90
2006	57.38	59.39	61.61	66.74	73.11	79.22	80.43	85.77	79.22	73.69	65.54	63.50
2007	60.86	58.94	62.60	65.89	73.34	83.66	85.65	85.46	81.32	76.13	68.30	61.94
2008	60.51	57.89	64.33	67.28	73.46	81.98	83.62	84.32	80.42	75.03	70.76	63.01
2009	M	57.20	M	M	M	M	M	M	M	M	68.00	M
2010	60.80	M	M	M	69.80	M	M	78.80	M	M	75.20	65.79
2011	60.80	M	M	66.20	69.80	78.80	81.50	82.76	82.82	73.52	64.34	62.60
2012	56.56	58.01	62.43	68.18	74.74	82.10	86.35	87.68	81.74	78.28	70.64	62.72
2013	59.81	61.83	63.30	67.76	75.78	80.60	82.63	84.20	81.86	74.04	70.70	61.32
2014	63.35	62.66	63.30	68.12	73.52	81.68	83.45	85.48	81.92	75.66	68.96	66.43
2015	59.58	58.87	62.95	65.24	74.21	79.76	83.85	86.81	84.02	76.71	71.60	63.94
2016	60.16	63.72	64.92	72.20	73.75	83.12	84.20	84.92	81.92	76.59	69.74	58.54
2017	58.10	61.06	63.76	68.24	75.37	82.70	84.95	83.91	82.40	75.08	68.06	64.46
2018	61.32	63.18	66.03	71.30	78.86	82.34	86.12	85.30	82.70	75.66	69.98	61.67
2019	59.99	61.19	64.57	66.80	73.98	82.16	84.72	84.61	80.54	78.45	73.94	65.15
2020	59.87	61.67	63.70	67.22	76.77	78.92	84.03	85.42	84.20	80.14	69.98	66.32
2021	62.95	63.05	62.48	68.30	77.99	81.56	85.83	87.16	81.74	75.03	71.18	63.30
2022	58.48	61.31	58.48	68.60	75.49	81.74	82.63	84.08	81.98	74.79	69.80	66.26
2023	63.99	59.71	64.69	67.16	72.06	79.58	87.74	86.52	84.14	78.39	73.94	67.88
2024	63.30	64.46	67.30	72.44	76.01	86.54	86.46	87.10	83.60	77.64	69.92	64.92
2025	65.10	58.10	65.27	67.68	74.74	80.78	86.12	86.17	81.74	75.90	73.16	65.56
2026	62.54	63.56	63.70	68.78	73.05	81.32	84.84	85.54	81.80	74.08	M	M

Average Daily Low Temperature [F]

Year	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
1998	M	53.60	50.64	57.68	61.67	68.79	M	M	70.23	66.37	59.12	53.43
1999	52.64	51.22	53.08	57.44	63.41	70.46	73.86	75.08	71.36	67.36	60.32	55.34
2000	47.74	49.01	49.83	58.34	63.24	68.78	73.05	74.27	71.66	65.21	59.90	54.65
2001	53.95	51.93	56.45	57.20	63.94	69.44	74.62	76.48	73.10	67.48	57.80	51.63
2002	49.19	52.96	54.94	57.57	63.24	69.86	75.49	76.54	71.42	65.79	61.46	53.89
2003	54.82	47.43	50.93	56.36	64.34	70.22	73.92	75.03	70.88	66.37	60.02	54.53
2004	49.30	50.81	54.01	57.14	61.67	68.36	73.63	74.68	70.94	67.30	60.14	56.45
2005	53.54	51.54	54.65	58.22	64.28	69.56	74.68	75.66	72.26	64.17	58.34	56.21
2006	50.00	52.06	52.85	58.10	64.46	71.78	72.88	75.37	71.84	65.33	56.96	56.37
2007	54.01	53.21	54.82	57.08	64.75	72.68	76.01	76.70	73.34	68.17	62.24	56.25
2008	53.31	52.49	57.60	59.06	64.17	71.24	74.39	75.37	71.72	66.03	62.42	56.50
2009	M	57.20	M	M	M	M	M	M	M	M	68.00	M
2010	60.80	M	M	M	69.80	M	M	78.80	M	M	73.40	59.41
2011	54.63	M	M	64.40	67.10	77.90	79.70	74.84	74.12	64.52	58.10	55.52
2012	50.58	51.43	54.24	59.84	65.50	72.08	76.13	77.41	72.80	69.63	65.36	57.92
2013	55.17	57.97	58.77	60.26	66.55	71.18	74.45	75.49	73.52	65.10	62.90	53.95
2014	56.33	56.11	56.62	59.66	64.81	71.36	73.92	76.71	73.52	66.43	60.98	57.43
2015	53.14	53.02	55.75	54.80	64.17	70.34	73.98	77.81	74.78	68.75	61.76	56.56
2016	51.57	56.27	57.03	60.32	64.17	71.06	74.85	75.44	72.74	67.19	62.12	51.57
2017	50.72	54.18	56.33	58.82	64.92	71.66	74.79	74.68	72.08	65.33	58.40	55.63
2018	52.67	55.59	57.55	60.08	67.71	72.02	76.19	76.94	72.74	66.26	61.82	54.30
2019	52.15	51.99	55.34	57.50	63.01	71.66	74.10	75.61	71.48	69.05	66.86	57.08
2020	53.02	53.10	55.11	57.86	63.99	68.78	74.56	75.95	74.84	68.12	60.02	58.54
2021	55.05	53.47	52.90	57.80	65.21	71.90	76.71	77.52	72.50	64.92	61.76	55.28
2022	50.17	52.12	49.13	57.62	63.70	71.72	72.76	74.33	72.56	66.72	60.92	57.78
2023	53.72	49.74	55.17	58.04	62.54	69.80	76.19	76.25	74.66	69.05	64.22	58.94
2024	55.46	55.71	56.85	62.36	66.37	76.16	77.17	77.52	74.84	67.30	60.62	55.52
2025	56.04	50.19	58.01	59.26	66.03	71.12	75.08	76.07	73.40	66.55	64.34	57.55
2026	54.35	55.46	53.77	58.88	63.70	71.90	75.49	75.26	71.90	64.34	M	M

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

Year	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
1998	M	57.20	54.79	62.54	66.14	73.51	M	M	74.81	71.34	64.22	57.05
1999	56.66	55.69	57.93	62.36	68.41	75.44	78.36	79.76	75.92	72.01	64.16	60.02
2000	51.65	53.54	54.88	62.00	68.03	73.40	78.28	78.05	76.16	69.07	64.97	58.91
2001	57.64	56.20	61.61	62.21	68.75	74.45	79.06	80.57	77.54	71.37	62.63	55.57
2002	53.60	57.91	59.35	62.01	68.00	75.26	80.57	81.06	76.19	70.35	65.96	57.61
2003	58.65	51.38	55.11	60.53	69.83	75.32	79.03	79.61	75.29	70.99	64.19	58.25
2004	53.54	54.81	58.10	61.58	66.32	73.46	78.13	79.55	75.26	72.01	64.25	59.52
2005	56.78	54.24	58.45	62.09	68.87	74.18	79.35	80.14	76.28	68.32	61.52	59.06
2006	53.69	55.72	57.23	62.42	68.78	75.50	76.65	80.57	75.53	69.51	61.25	59.93
2007	57.43	56.07	58.71	61.48	69.05	78.17	80.83	81.08	77.33	72.15	65.27	59.09
2008	56.91	55.19	60.97	63.17	68.81	76.61	79.00	79.85	76.07	70.53	66.59	59.75
2009	M	57.20	M	M	M	M	M	M	M	M	68.00	M
2010	60.80	M	M	M	69.80	M	M	78.80	M	M	74.30	62.60
2011	57.71	M	M	65.30	68.45	78.35	80.60	78.80	78.47	69.02	61.22	59.06
2012	53.57	54.72	58.33	64.01	70.12	77.09	81.24	82.55	77.27	73.95	68.00	60.30
2013	57.49	59.90	61.03	64.01	71.16	75.89	78.54	79.85	77.69	69.57	66.80	57.64
2014	59.84	59.39	59.96	63.89	69.16	76.52	78.68	81.09	77.72	71.05	64.97	61.93
2015	56.36	55.95	59.35	60.02	69.19	75.05	78.92	82.31	79.40	72.73	66.68	60.25
2016	55.86	59.99	60.97	66.26	68.96	77.09	79.53	80.18	77.33	71.89	65.93	55.05
2017	54.41	57.62	60.05	63.53	70.15	77.18	79.87	79.29	77.24	70.21	63.23	60.05
2018	57.00	59.39	61.79	65.69	73.28	77.18	81.15	81.12	77.72	70.96	65.90	57.98
2019	56.07	56.59	59.96	62.15	68.49	76.91	79.41	80.11	76.01	73.75	70.40	61.12
2020	56.45	57.39	59.41	62.54	70.38	73.85	79.29	80.69	79.52	74.13	65.00	62.43
2021	59.00	58.26	57.69	63.05	71.60	76.73	81.27	82.34	77.12	69.97	66.47	59.29
2022	54.33	56.72	53.80	63.11	69.60	76.73	77.70	79.21	77.27	70.76	65.36	62.02
2023	58.85	54.72	59.93	62.60	67.30	74.69	81.96	81.38	79.40	73.72	69.08	63.41
2024	59.38	60.09	62.08	67.40	71.19	81.35	81.82	82.31	79.22	72.47	65.27	60.22
2025	60.57	54.15	61.64	63.47	70.38	75.95	80.60	81.12	77.57	71.22	68.75	61.55
2026	58.45	59.51	58.74	63.83	68.38	76.61	80.16	80.40	76.85	69.21	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
1998	M	71.6%	64.4%	70.5%	76.5%	75.4%	M	M	72.0%	73.0%	76.3%	76.8%
1999	74.8%	72.1%	72.8%	74.6%	73.9%	74.0%	79.2%	74.5%	76.9%	78.4%	70.5%	74.1%
2000	65.6%	68.7%	70.0%	77.3%	74.3%	72.1%	70.9%	76.6%	73.7%	69.8%	78.3%	72.1%
2001	74.9%	70.8%	76.1%	72.3%	69.6%	68.7%	71.4%	74.0%	67.5%	67.3%	70.9%	71.1%
2002	67.4%	74.1%	70.9%	73.6%	74.8%	70.7%	69.9%	68.4%	71.3%	66.4%	71.6%	71.5%
2003	75.6%	62.4%	64.3%	69.0%	72.4%	71.0%	66.7%	72.2%	67.4%	70.7%	71.3%	68.8%
2004	71.7%	71.5%	65.4%	70.1%	71.1%	71.5%	69.3%	66.8%	69.7%	71.9%	68.6%	67.5%
2005	67.7%	63.3%	68.9%	61.1%	68.0%	69.2%	70.9%	70.4%	68.7%	67.7%	73.2%	73.6%
2006	69.7%	71.0%	71.8%	74.6%	70.2%	66.3%	70.1%	73.8%	72.6%	75.2%	70.0%	66.4%
2007	66.9%	70.6%	70.7%	69.0%	73.8%	67.3%	67.1%	73.0%	63.5%	69.4%	68.0%	64.8%
2008	62.3%	66.1%	74.5%	73.7%	68.1%	70.1%	69.6%	73.8%	68.9%	67.4%	72.8%	71.4%
2009	71.2%	72.0%	62.1%	71.2%	70.6%	68.8%	70.6%	74.6%	74.1%	73.8%	71.2%	76.3%
2010	72.5%	73.8%	70.3%	69.5%	60.7%	64.1%	64.2%	70.9%	61.4%	65.2%	74.4%	71.9%
2011	65.8%	66.1%	67.8%	68.1%	71.2%	68.2%	68.0%	69.6%	67.5%	59.7%	61.5%	66.0%
2012	64.7%	62.8%	64.1%	71.9%	70.1%	69.8%	71.4%	65.9%	73.4%	73.1%	73.1%	78.3%
2013	67.6%	69.1%	66.9%	70.4%	70.2%	68.3%	65.0%	70.1%	60.9%	64.5%	72.8%	68.2%
2014	74.3%	72.3%	69.0%	72.2%	67.7%	65.5%	69.8%	70.1%	63.6%	64.8%	64.3%	67.8%
2015	65.5%	63.7%	66.1%	62.6%	69.6%	70.2%	71.6%	71.4%	71.4%	70.9%	69.3%	64.0%
2016	65.8%	79.6%	68.2%	71.7%	71.9%	68.6%	71.8%	73.3%	65.6%	68.1%	65.3%	60.8%
2017	65.3%	68.0%	73.3%	69.2%	70.6%	69.0%	69.1%	72.7%	66.0%	66.0%	68.1%	69.8%
2018	68.5%	73.9%	72.8%	74.2%	72.1%	70.9%	69.8%	71.9%	68.4%	67.5%	72.1%	69.1%
2019	67.0%	67.2%	68.5%	70.5%	72.5%	72.4%	70.1%	73.0%	71.3%	73.6%	73.0%	68.7%
2020	65.6%	69.2%	70.9%	74.7%	67.6%	75.7%	73.5%	71.2%	73.6%	70.0%	65.8%	71.1%
2021	71.2%	72.6%	64.8%	68.1%	67.4%	83.3%	84.9%	84.9%	69.0%	68.9%	73.2%	68.7%
2022	66.4%	69.4%	63.2%	73.4%	73.1%	72.7%	73.1%	76.6%	70.3%	71.0%	75.5%	77.4%
2023	71.7%	66.5%	74.9%	73.7%	77.9%	79.2%	69.4%	76.9%	75.3%	74.7%	73.1%	75.4%
2024	70.3%	72.6%	70.9%	75.0%	75.2%	68.4%	72.9%	71.1%	66.4%	64.1%	64.7%	71.0%
2025	74.6%	60.2%	69.6%	68.3%	70.1%	71.8%	70.9%	71.9%	70.1%	67.6%	69.8%	67.6%
2026	66.7%	70.2%	66.4%	71.5%	72.9%	72.4%	67.7%	73.2%	68.1%	69.3%	M	M