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Idaho

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Idaho Weather, Climate and Best Time to Visit

Data source:Meteostat
Update date:2025-09

Idaho year round climate

  • Spring (March–May): Avg. -0.4°C–10.1°C, cold climate, occasional snowfall, March has the most rainfall. Common activities: Skiing (before March), viewing spring scenery (May). Suggested clothing: Warm coat, hat, gloves, scarf.
  • Summer (June–August): Avg. 15.4°C–21.4°C, mild and dry climate, little rainfall. Common activities: Hiking, camping, fishing. Suggested clothing: Light and breathable clothing, sun hat.
  • Autumn (September–November): Avg. 8.8°C–14.9°C, cool climate, rainfall gradually increases. Common activities: Viewing autumn leaves, hiking. Suggested clothing: Light jacket, long-sleeved shirt, comfortable shoes.
  • Winter (December–February): Avg. -5.8°C–-0.4°C, cold climate, frequent snowfall. Common activities: Skiing, snow activities. Suggested clothing: Heavy warm coat, snow pants, waterproof boots, hat, gloves, scarf.

Idaho climatological average

Annual average temperature: approx. 6°C / Annual rainfall: approx. 444 mm / Summer humidity: 30%–40% / Rainiest month: March

Idaho monthly average temperature and precipitation

Month
Air temperature (°C)
Precipitation (mm)
January
-5.8°C
36.6
February
-4.3°C
42.4
March
-0.4°C
53.2
April
4.7°C
41.6
May
10.1°C
52.7
June
15.4°C
22.9
July
21.4°C
1.5
August
20°C
47.4
September
14.9°C
27.6
October
8.8°C
23
November
-0.8°C
44
December
-3°C
51.5

Idaho weather for the next seven days

4/29
Wednesday
Patchy rain nearby
8.6°C/-3.7°C
4/30
Thursday
Patchy rain nearby
11.1°C/-2.8°C
5/1
Friday
Sunny
14.5°C/-2°C
5/2
Saturday
Sunny
14.6°C/1.4°C
5/3
Sunday
Sunny
16.7°C/2.5°C
5/4
Monday
Patchy rain nearby
12°C/5.2°C
5/5
Tuesday
Sunny
15.1°C/0.6°C