ClimateForecastNovemberDecember >>

Boise (ID) Climate by Month

The temperature in Boise can vary quite a bit throughout the year. Temperatures can be very warm during the warmest months, and cold during the cooler months. It maintains relatively low levels of precipitation throughout the seasons. Let's now guide you through the climate details for a complete overview.

Average day and night temperature

Visitors to Boise can expect significant temperature changes throughout the year. Average daytime temperatures range from a very warm 34°C in July, the warmest time of the year, to a chilly 4°C during cooler months like January. At night, temperatures typically average around -5°C during these months.

The mean minimum and maximum temperatures throughout the year

Precipitation and rainy days

Boise tends toward drier weather patterns, receiving approximately 326 mm of rain/snow per year. Significant seasonal changes in precipitation occur throughout the year. During the wetter season, December receives moderate snow/rainfall, averaging 49 mm of precipitation, recorded across 14 snowy/rainy days. In contrast, the drier season, August brings less rainfall, with 8.3 mm over 4 rainy days.

The mean monthly precipitation over the year, including rain, hail and snow

Sunshine over the year

Seasonal changes in sunshine hours are quite dramatic in Boise. While July receives considerable daily sunshine with up to 13.3 hours, December marks the darkest time of the year, where sunshine is scarce with only 3.4 hours of sunlight per day.

Monthly hours of sunshine

Daily hours of sunshine

The best time of year to visit Boise in the United States of America

Other facts from our historical weather data:
  • When is summer in Boise?
    The hottest season / summer takes place in June, July, August and September.
  • Does Boise have a dry season?
    Yes, the months of July, August and September are very dry.
  • Which is the warmest month in Boise?
    July has an average maximum temperature of 34°C and is the warmest month of the year.
  • Which is the coldest month in Boise?
    The coldest month is January with an average maximum temperature of 4°C.
  • Which is the wettest month in Boise?
    December tops the wettest month list with 49 mm of rainfall.
  • Which is the driest month in Boise?
    August is the driest month with 8 mm of precipitation.
  • Which is the sunniest month in Boise?
    July is the sunniest month with an average of 399 hours of sunshine.

  • No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.

    Forecast for Boise (ID)

    Fri   Nov 22
    13°C | 8°C
    E 22 km/h
    12 mm
    overcast and slight rain

    overcast and slight rain

    Sat   Nov 23
    10°C | 2°C
    SE 22 km/h
    7.2 mm
    overcast and rain

    overcast and rain

    Sun   Nov 24
    10°C | 0°C
    SE 14 km/h
    clear and no rain

    clear and no rain