Weather By Day

December Boise Weather 
December Boise Weather
Record High: 65°F
Normal High: 37°F
Normal Low: 24°F
Record Low: -25°F
Avg Monthly Rain: 1.38"
Rec 1 Day Rain: 1.03"
Avg Monthly Snow: 5.7"
Rec 1 Day Snow: 9.8"

Boise Weather In December

The hottest day in Boise Idaho in December for the past 71 years was 65 degrees Fahrenheit, on December 22, 1964, while the typical high temperature is 37. The lowest documented temperature for Boise for the past 71 years in December was -25 most recently registered on December 22, 1990, while the standard low daily temperature for the month is 24.

United States National Weather Service historical Boise December weather data indicates that on December 22, 1990, the measured high temperature did not exceed -6 degrees Fahrenheit, the lowest high measured in Boise in the past 71 years. NWS data also shows that on December 31, 1996, the lowest measured temperature on that day did not drop below 48 degrees, the highest low temperature measured in Boise in the last 71 years.

According to the National Weather Service, the high temperature in Boise in December on the first day of the month averages 79 degrees and the high on the last day of the month averages 78 degrees. The low temperature in Boise in December on the first day of the month averages 69 degrees and the low temperature on the last day of the month averages 66 degrees.

Boise receives an average of 1.38 inches of precipitation during December. The most rain recorded in a single day, as shown by December Boise Weather data, was 1.03 inches on December 23, 1955. Boise averages 5.7 inches of snow in December. The most snow recorded in a single day in December was 9.8 inches on December 20, 1996.