Idaho Falls January Weather

Averages and records for weather in Idaho Falls, Idaho in the month of January.
Typical Idaho Falls January Weather
1991–2020
Average daily high 28.7 °F
Average daily low 11.9 °F
Average monthly precipitation 0.6 inches
Idaho Falls January Weather Records
1948–2023
Highest temperature 57 °F January 31, 2003
Lowest temperature -33 °F January 31, 1985
Highest daily low 41 °F January 31, 2003
Lowest daily high -13 °F January 1, 1979
Hottest average temperature 12.1 °F
above average
1953
Coldest average temperature -16.4 °F
below average
1949
Most daily precipitation 0.8 inches January 21, 1969
Most monthly precipitation 2.4 inches 1969
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 28.4 11.7 53 -33
January 2 28.3 11.7 45 -25
January 3 28.2 11.6 46 -14
January 4 28.1 11.5 45 -20
January 5 28.1 11.6 47 -24
January 6 28.2 11.5 47 -23
January 7 28.3 11.5 51 -22
January 8 28.3 11.5 46 -22
January 9 28.3 11.6 51 -23
January 10 28.4 11.7 49 -16
January 11 28.6 11.9 44 -27
January 12 28.6 11.9 48 -33
January 13 28.6 11.9 48 -21
January 14 28.6 11.9 45 -19
January 15 28.7 12.0 45 -21
January 16 28.8 12.0 48 -14
January 17 28.9 12.2 44 -24
January 18 29.1 12.3 48 -27
January 19 29.2 12.4 45 -22
January 20 29.3 12.5 51 -21
January 21 29.5 12.6 44 -29
January 22 29.6 12.8 50 -27
January 23 29.7 12.6 52 -29
January 24 29.9 12.6 46 -18
January 25 30.0 12.6 53 -25
January 26 30.1 12.6 47 -18
January 27 30.2 12.7 46 -29
January 28 30.3 12.7 46 -25
January 29 30.5 12.8 47 -29
January 30 30.7 13.0 50 -27
January 31 31.0 13.2 57 -33
Weather Station Details
Years Station Coordinates
1948–2023 Idaho Falls Fanning Field location