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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 3.5–17.6°C, 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 23.0–23.3°C, 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 19.2–4.2°C, 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–-1.5°C, 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. 10.5°C / Annual rainfall: approx. 1132 mm / Summer humidity: 60%–70% / Rainiest month: May

Iowa monthly average temperature and precipitation

Month
Air temperature (°C)
Precipitation (mm)
January
-6.3°C
37.7
February
-1.6°C
25.3
March
3.5°C
98.5
April
9.7°C
128.8
May
17.6°C
163.6
June
23°C
163.3
July
23.3°C
145.2
August
22.8°C
118.8
September
19.2°C
88
October
12.1°C
64.4
November
4.2°C
60.3
December
-1.5°C
38.8

Iowa weather for the next seven days

12/16
Tuesday
Cloudy
3.4°C/-13.1°C
12/17
Wednesday
Overcast
-0.5°C/-1.7°C
12/18
Thursday
Moderate or heavy snow showers
1°C/-10.9°C
12/19
Friday
Sunny
-2.5°C/-11.8°C
12/20
Saturday
Cloudy
4.2°C/-2.1°C
12/21
Sunday
Sunny
1.6°C/-4.5°C
12/22
Monday
Overcast
2.2°C/-1°C