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
2002	M	M	M	M	M	M	M	3.50	1.67	3.42	4.68	2.99
2003	M	M	M	M	M	M	M	M	M	M	M	M
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	0.23	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
2002	M	M	M	M	M	M	M	3.7	4.0	4.5	5.0	5.7
2003	M	M	M	M	M	M	M	M	M	M	M	M
2004	M	M	M	M	M	M	M	M	M	M	M	M
2005	4.8	4.0	4.3	4.6	4.4	3.4	3.6	M	M	4.0	6.7	5.5
2006	4.7	M	M	M	M	M	M	M	M	M	M	M
2007	3.8	5.5	5.3	5.3	4.0	3.6	3.4	4.0	M	M	M	M

Average Daily High Temperature [F]

Year	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
2002	M	M	M	M	M	M	M	78.54	75.37	52.83	40.37	32.03
2003	M	M	M	47.70	M	M	M	M	M	M	M	M
2004	M	M	M	M	M	61.70	71.12	67.45	72.77	48.74	45.00	47.80
2005	26.67	29.38	33.29	51.23	61.21	78.73	81.01	M	58.10	59.08	46.09	28.76
2006	33.78	18.40	28.38	42.83	58.35	76.35	73.13	72.20	60.55	M	42.87	38.77
2007	18.41	22.93	37.15	47.40	66.23	74.91	76.10	77.01	M	M	M	M

Average Daily Low Temperature [F]

Year	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
2002	M	M	M	M	M	M	M	60.58	57.52	38.83	28.69	18.86
2003	M	M	M	47.70	M	M	M	M	M	M	M	M
2004	M	M	M	M	M	61.70	69.13	63.37	71.30	48.74	45.00	36.90
2005	5.90	10.89	14.57	33.46	42.03	60.51	63.06	M	56.50	45.37	31.48	17.57
2006	20.03	17.64	25.23	42.80	58.35	76.35	73.00	72.20	59.45	M	42.87	37.33
2007	3.19	5.29	19.38	32.04	44.45	55.41	58.26	61.28	M	M	M	M

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

Year	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
2002	M	M	M	M	M	M	M	69.56	66.45	45.83	34.53	25.44
2003	M	M	M	47.70	M	M	M	M	M	M	M	M
2004	M	M	M	M	M	61.70	70.12	65.41	72.04	48.74	45.00	42.35
2005	16.29	20.14	23.93	42.34	51.62	69.62	72.04	M	57.30	52.22	38.78	23.17
2006	26.90	18.02	26.81	42.82	58.35	76.35	73.06	72.20	60.00	M	42.87	38.05
2007	10.80	14.11	28.26	39.72	55.34	65.16	67.18	69.15	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
2002	M	M	M	M	M	M	M	78.9%	76.9%	82.3%	84.8%	84.9%
2003	M	M	M	M	M	M	M	M	M	M	M	M
2004	M	M	M	M	M	M	M	M	M	M	M	M
2005	80.2%	83.1%	78.1%	73.0%	73.4%	81.1%	77.0%	M	M	83.6%	86.1%	89.3%
2006	90.2%	M	M	M	M	M	M	M	M	M	M	M
2007	81.4%	80.4%	76.0%	81.7%	71.7%	79.1%	82.1%	79.5%	M	M	M	M