Weather & Climate at Iowa Army Plant

Des Moines County, IA

Summary of the weather and climate in Des Moines County, IA:

The average high is 62.7°F and the average low is 43°F.
The hottest month is July with a high of 86.8°F.
The coldest month is January with a low of 17.2°F.
Annual rainfall is 38.48 inches; the rainiest month is May (4.85 in).
Annual snowfall is 23.5 inches; the snowiest month is December (7.5 in).

Source: NOAA climate normals.

Temperatures through the year

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Bars span each month's average low to average high (10°F – 90°F scale).

Month	High (°F)	Low (°F)	Rain (in)	Snow (in)
January	34.4	17.2	1.24	6.7
February	38.9	21.3	1.62	6.5
March	51.5	31.7	2.79	1.9
April	64.8	42.7	3.76	0.1
May	74.3	53	4.85	0
June	83.6	62.9	4.47	0
July	86.8	66.8	4.25	0
August	85	65.1	4.27	0
September	78.5	56.3	3.52	0
October	66.1	44.6	3.12	0
November	51.5	33.3	2.5	0.8
December	37.2	21	2.09	7.5