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Iowa

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Iowa Weather, Climate and Best Time to Visit

Data source:Meteostat
Update date:2025-09

Iowa year round climate

  • Spring (March–May): Average 38–63°F, climate gradually transitions from cold to warm, rainfall gradually increases, with the most rainfall in May. Common activities: Outdoor walks, flower viewing. Suggested clothing: Spring jacket, long-sleeved shirts, comfortable shoes.
  • Summer (June–August): Average 73–73°F, warm and humid climate, relatively high rainfall. Common activities: Camping, water activities. Suggested clothing: Light and breathable clothing, short-sleeved shirts, shorts.
  • Autumn (September–November): Average 66–39°F, climate transitions from warm to cool, rainfall decreases. Common activities: Maple leaf viewing, outdoor picnics. Suggested clothing: Light jacket, long-sleeved shirts, comfortable shoes.
  • Winter (December–February): Average -6.3–-34.7°F, cold and dry climate, snowfall possible. Common activities: Skiing, indoor activities. Suggested clothing: Heavy warm clothing, down jackets, scarves, gloves, hats.

Iowa climatological average

Annual average temperature: approx. 50.9°F / Annual rainfall: approx. 1132 mm / Summer humidity: 60%–70% / Rainiest month: May

Iowa monthly average temperature and precipitation

Month
Air temperature (°F)
Precipitation (mm)
January
20.7°F
37.7
February
29.1°F
25.3
March
38.3°F
98.5
April
49.5°F
128.8
May
63.7°F
163.6
June
73.4°F
163.3
July
73.9°F
145.2
August
73°F
118.8
September
66.6°F
88
October
53.8°F
64.4
November
39.6°F
60.3
December
29.3°F
38.8

Iowa weather for the next seven days

12/16
Tuesday
Cloudy
38.1°F/8.4°F
12/17
Wednesday
Overcast
31.1°F/28.9°F
12/18
Thursday
Moderate or heavy snow showers
33.8°F/12.3°F
12/19
Friday
Sunny
27.5°F/10.7°F
12/20
Saturday
Cloudy
39.6°F/28.3°F
12/21
Sunday
Sunny
34.9°F/23.8°F
12/22
Monday
Overcast
35.9°F/30.2°F