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Boise January Weather

Averages and records for weather in Boise, Idaho in the month of January.
Typical Boise January Weather
1991–2020
Average daily high 38.8 °F
Average daily low 25.2 °F
Average monthly precipitation 1.4 inches
Average monthly snow 5.3 inches
Boise January Weather Records
1940–2022
Highest temperature 63 °F January 9, 1953
Lowest temperature -17 °F January 31, 1950
Highest daily low 49 °F January 13, 1969
Lowest daily high 0 °F January 21, 1962
Hottest average temperature 8.7 °F
above average
1953
Coldest average temperature -22.0 °F
below average
1949
Most daily precipitation 1.1 inches January 18, 1953
Most monthly precipitation 3.9 inches 1970
Most daily snow 8.4 inches January 20, 2002
Most monthly snow 21.5 inches 1964
Note: Daily averages are a moving average which includes 14 days before and after
Day Average (°F) Record (°F)
High Low High Low
January 1 37.7 24.1 60 -13
January 2 37.7 24.1 55 -5
January 3 37.7 24.2 51 -5
January 4 37.8 24.2 57 -9
January 5 37.8 24.3 52 -12
January 6 37.8 24.4 55 -11
January 7 37.8 24.6 58 -10
January 8 37.8 24.6 55 -14
January 9 37.9 24.7 63 -13
January 10 38.1 24.9 57 -8
January 11 38.2 25.0 58 -6
January 12 38.3 25.0 59 -7
January 13 38.4 25.0 55 -1
January 14 38.5 25.1 56 -2
January 15 38.7 25.1 56 -10
January 16 38.8 25.2 57 -1
January 17 39.0 25.4 56 -7
January 18 39.2 25.5 58 -13
January 19 39.4 25.6 54 -10
January 20 39.7 25.8 57 -8
January 21 39.9 26.0 53 -12
January 22 40.1 26.2 53 -11
January 23 40.3 26.3 57 -12
January 24 40.5 26.3 57 -6
January 25 40.7 26.4 59 -5
January 26 40.9 26.5 55 -8
January 27 41.1 26.6 52 -9
January 28 41.3 26.7 56 -6
January 29 41.5 26.8 56 -9
January 30 41.7 27.0 59 -13
January 31 42.1 27.2 61 -17
Weather Station Details
Years Station Coordinates
1940–2022 location