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Get the monthly weather forecast for Boise, ID, including daily high/low, historical averages, to help you plan ahead.
The lowest daily average low temperature is 24°F on December 31. For reference, on July 25, the hottest day of the year, temperatures in Boise typically range from 63°F to 93°F, while on December 31, the coldest day of the year, they range from 24°F to 36°F.
Boise Temperature History December 2020. The daily range of reported temperatures (gray bars) and 24-hour highs (red ticks) and lows (blue ticks), placed over the daily average high (faint red line) and low (faint blue line) temperature, with 25th to 75th and 10th to 90th percentile bands.
Weather.com brings you the most accurate monthly weather forecast for Boise, ID with average/record and high/low temperatures, precipitation and more.
Check accurate weather in December in Boise (ID). Expect Boise December temperature around 4°C (40°F). Read clothing tips & recommended activities.
December 2021 Weather History in Boise Idaho, United States. The data for this report comes from the Boise Air Terminal. See all nearby weather stations. This report shows the past weather for Boise, providing a weather history for December 2021.
The average temperature in Boise in December for a typical day ranges from a high of 36°F (2°C) to a low of 22°F (-5°C). Some would describe the temperature to be really cold. The general area may also feel breezy. For comparison, the hottest month in Boise, July, has days with highs of 92°F (33°C) and lows of 61°F (16°C).
