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
12/17
Wednesday
Overcast
0.2°C/-8.2°C
12/18
Thursday
Moderate or heavy snow showers
3.3°C/-8.7°C
12/19
Friday
Sunny
-2.1°C/-11.1°C
12/20
Saturday
Partly Cloudy
2.4°C/-1.4°C
12/21
Sunday
Sunny
-0.5°C/-4.3°C
12/22
Monday
Light freezing rain
1°C/-4.3°C
12/23
Tuesday
Partly Cloudy
4.6°C/-0.1°C
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