Des Moines, IA Weather

At the center of North America and far removed from large bodies of water, the Des Moines area has a hot summer type humid continental climate , with warm to hot, humid summers and cold, snowy winters. Summer temperatures can often climb into the 90 °F (32 °C) range, occasionally reaching 100 °F (38 °C). Humidity can be high in spring and summer, with frequent afternoon thunderstorms. Fall brings pleasant temperatures and colorful fall foliage. Winters vary from moderately cold to bitterly cold, with low temperatures venturing below 0 °F (−18 °C) quite often. Snowfall averages 35.3 inches (90 cm) per season, and annual precipitation averages 36.0 inches (914 mm), with a peak in the warmer months. Winters are slightly colder than Chicago, but still warmer than Minneapolis, with summer temperatures being very similar between the Upper Midwest metropolitan areas.

Average Temperature
Jan
27 °F
-3 °C
Feb
23 °F
-5 °C
Mar
45 °F
7 °C
Apr
61 °F
16 °C
May
64 °F
18 °C
Jun
77 °F
25 °C
Jul
86 °F
30 °C
Aug
81 °F
27 °C
Sep
79 °F
26 °C
Oct
57 °F
14 °C
Nov
41 °F
5 °C
Dec
41 °F
5 °C
Humidity
Jan
76%
Feb
79%
Mar
68%
Apr
64%
May
74%
Jun
69%
Jul
67%
Aug
68%
Sep
76%
Oct
70%
Nov
69%
Dec
72%
Rain
Jan
60mm
Feb
51mm
Mar
135mm
Apr
137mm
May
408mm
Jun
266mm
Jul
190mm
Aug
233mm
Sep
223mm
Oct
232mm
Nov
85mm
Dec
54mm
Clouds
Jan
68%
Feb
66%
Mar
56%
Apr
53%
May
71%
Jun
48%
Jul
26%
Aug
38%
Sep
39%
Oct
47%
Nov
42%
Dec
50%
Air quality US AQI
Jan
33
Feb
39
Mar
31
Apr
31
May
32
Jun
33
Jul
36
Aug
33
Sep
31
Oct
22
Nov
30
Dec
34
Sun
Jan
2UVI
Feb
3UVI
Mar
4UVI
Apr
5UVI
May
6UVI
Jun
6UVI
Jul
8UVI
Aug
7UVI
Sep
6UVI
Oct
4UVI
Nov
2UVI
Dec
1UVI