Best year time to visit Boise

General weather information about Boise

Average annual temperature is 11.8 °C

Absolute maximum temperature: 39.7 °C

Absolute minimum temperature: -11.1 °C

Number of sunny days: 218 days

Number of rainy days: 126 days

Number of snow days: 21 days

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* Weather data for Boise United States is based on climate observations for 2026 year

Boise air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)11.511.613.130.932.133.739.539.732.528.917.113.4
Average daytime temperature (°C)5.17.08.015.625.026.635.533.027.519.110.15.1
Average temperature (°C)0.70.82.78.717.619.327.225.119.412.55.01.3
Average night temperature (°C)-2.5-3.4-1.33.210.812.818.518.212.97.20.9-1.6
Absolute minimum temperature (°C)-11.1-8.4-4.6-4.43.05.413.612.26.4-4.6-7.8-6.1

Boise monthly weather indicators

JanFebMarAprMayJunJulAugSepOctNovDec
Daylight maximum duration (h)9.011.012.014.015.015.015.014.013.011.010.09.0
Daylight mean duration (h)9.410.511.913.414.715.415.113.912.511.09.79.0
Daylight minimum duration (h)8.09.011.012.014.015.014.013.011.010.09.08.0
Sunshine mean duration (h)6.07.57.19.712.011.813.511.610.38.57.25.1
Precipitation (mm)40148321462901915292655
Sunny days15147131516302025232218
Rainy days1181815161411158811
Snow days566200000002

Boise - weather forecast by months

Boise weather in januaryBoise weather in februaryBoise weather in marchBoise weather in aprilBoise weather in mayBoise weather in juneBoise weather in julyBoise weather in augustBoise weather in septemberBoise weather in octoberBoise weather in novemberBoise weather in december

Best time to visit Boise:

The best time to visit Boise during the most sunny months:

  • May — 12.0(h)
  • June — 11.8(h)
  • July — 13.5(h)
  • August — 11.6(h)

Months with the longest average daylight duration in Boise:

  • June — 15.4(h)

The largest precipitation sum in Boise is at

  • January — 40(mm)
  • March — 83(mm)
  • May — 46(mm)
  • December — 55(mm)

    • Weather forecast in the closest to Boise admin centers

    Weather forecast in the closest towns to Boise

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    Frequently asked questions

    When is the best time to visit Boise?
    The historical weather data above shows the warmest, sunniest and driest months to help you choose the best time to visit Boise.
    What is the weather like in Boise?
    See average temperature, rainfall and daylight hours for Boise by month in the table above.
    How many sunny days does Boise have?
    The monthly weather statistics above show sunshine and rainfall patterns for Boise throughout the year.