Portage December Weather

Averages and records for weather in Portage, Indiana in the month of December.
Typical Portage December Weather
1991–2020
Average daily high 36.9 °F
Average daily low 23.9 °F
Average monthly precipitation 2.3 inches
Average monthly snow 8.5 inches
Daily chance of precipitation 39.8%
Daily chance of snow 18.3%
Portage December Weather Records
1893–2024
Highest temperature 70 °F December 2, 1982
Lowest temperature -22 °F December 28, 1924
Highest daily low 58 °F December 4, 1998
Lowest daily high -6 °F December 22, 1989
Hottest average high temperature 46.4 °F 1982
Coldest average high temperature 24.9 °F 1989
Most daily precipitation 3.4 inches December 24, 1965
Most monthly precipitation 7.7 inches 1895
Most daily snow 13.5 inches December 19, 1929
Most monthly snow 37.3 inches 2000
Note: Daily averages are a moving average which includes 14 days before and after
Day Average (°F) Record (°F)
High Low High Low
December 1 42.1 28.8 67 -2
December 2 41.8 28.5 70 -6
December 3 41.5 28.1 68 -6
December 4 41.0 27.7 68 -8
December 5 40.5 27.3 66 1
December 6 40.1 26.8 69 0
December 7 39.7 26.5 64 -5
December 8 39.3 26.2 64 -2
December 9 39.0 25.9 61 -8
December 10 38.7 25.6 63 -14
December 11 38.3 25.2 60 -15
December 12 37.9 24.8 63 -6
December 13 37.7 24.6 62 -13
December 14 37.4 24.3 65 -5
December 15 37.0 24.0 63 -17
December 16 36.8 23.7 67 -14
December 17 36.6 23.5 61 -12
December 18 36.3 23.2 59 -11
December 19 35.9 22.9 57 -11
December 20 35.7 22.6 59 -8
December 21 35.6 22.5 61 -10
December 22 35.5 22.3 58 -19
December 23 35.3 22.0 60 -16
December 24 35.1 21.7 62 -18
December 25 34.9 21.5 64 -15
December 26 34.7 21.4 60 -11
December 27 34.7 21.2 62 -11
December 28 34.5 21.1 67 -22
December 29 34.4 21.0 67 -6
December 30 34.3 20.9 59 -11
December 31 34.1 20.6 60 -10
Weather Station Details
Years Station Coordinates
1989–2024 Indiana Dunes National Lakeshore location
1952–1989 Ogden Dunes location
1893–1951 Valparaiso Water Works location