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.

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Precipitation Totals [inch]

Year	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
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

Average Wind Speed [MPH]

Year	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
2004	M	M	M	M	M	M	M	M	M	M	M	6.2
2005	9.4	M	M	M	M	9.3	9.1	M	M	10.6	11.9	11.1
2006	13.2	M	M	M	M	M	M	M	M	M	M	M
2007	12.6	9.8	13.8	10.6	10.6	9.7	8.0	8.6	10.4	12.2	12.6	11.4
2008	12.5	10.5	10.8	10.4	9.8	9.5	1.1	0.0	0.0	0.0	0.0	M
2009	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
2004	M	M	M	M	M	M	M	73.73	62.77	35.10	44.38	-3.50
2005	11.33	M	M	M	M	73.23	82.16	M	57.90	57.83	47.01	32.06
2006	42.59	31.62	30.83	44.57	49.55	73.85	61.76	67.95	57.60	M	9.93	35.53
2007	32.67	29.88	52.05	51.31	64.65	73.95	90.75	81.56	67.16	58.60	43.75	32.03
2008	30.85	32.31	44.24	49.94	63.05	69.66	80.83	80.64	68.03	58.65	54.95	19.77
2009	M	M	M	58.60	M	M	M	M	M	M	M	M

Average Daily Low Temperature [F]

Year	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
2004	M	M	M	M	M	M	M	69.08	61.35	35.10	44.38	-5.00
2005	-9.01	M	M	M	M	49.25	51.94	M	48.20	34.60	25.62	15.01
2006	26.14	29.74	30.80	44.20	49.55	73.85	59.99	67.95	50.40	M	9.93	34.23
2007	14.86	12.20	29.13	29.81	42.17	48.12	58.77	50.48	41.96	36.32	21.80	11.31
2008	8.58	11.93	23.30	26.09	41.26	46.84	51.25	51.70	42.97	31.92	43.60	19.40
2009	M	M	M	58.60	M	M	M	M	M	M	M	M

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

Year	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
2004	M	M	M	M	M	M	M	71.40	62.06	35.10	44.38	-4.25
2005	1.16	M	M	M	M	61.24	67.05	M	53.05	46.21	36.32	23.54
2006	34.37	30.68	30.81	44.38	49.55	73.85	60.87	67.95	54.00	M	9.93	34.88
2007	23.76	21.04	40.59	40.56	53.41	61.04	74.76	66.02	54.56	47.46	32.77	21.67
2008	19.72	22.12	33.77	38.01	52.16	58.25	66.04	66.17	55.50	45.29	49.28	19.58
2009	M	M	M	58.60	M	M	M	M	M	M	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
2004	M	M	M	M	M	M	M	M	M	M	M	79.0%
2005	76.9%	M	M	M	M	65.3%	49.8%	M	M	66.0%	62.8%	72.0%
2006	69.2%	M	M	M	M	M	M	M	M	M	M	M
2007	67.5%	76.9%	59.1%	66.9%	61.0%	56.1%	40.4%	47.4%	57.1%	55.9%	56.4%	70.1%
2008	67.1%	74.5%	59.2%	55.7%	61.0%	58.3%	53.7%	45.4%	60.6%	54.5%	47.2%	M
2009	M	M	M	M	M	M	M	M	M	M	M	M