St. Johns December Weather

Averages and records for weather in St. Johns, Arizona in the month of December.
Typical St. Johns December Weather
1991–2020
Average daily high 48.7 °F
Average daily low 19.8 °F
Average monthly precipitation 0.6 inches
Average monthly snow 2.4 inches
Daily chance of precipitation 8.0%
Daily chance of snow 3.3%
St. Johns December Weather Records
1901–2024
Highest temperature 73 °F December 8, 1970
Lowest temperature -25 °F December 23, 1990
Highest daily low 49 °F December 6, 1966
Lowest daily high 6 °F December 23, 1990
Hottest average high temperature 58.1 °F 1950
Coldest average high temperature 38.5 °F 1932
Most daily precipitation 1.2 inches December 2, 1997
Most monthly precipitation 2.3 inches 1965
Most daily snow 13.5 inches December 13, 1967
Most monthly snow 24.0 inches 1967
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 53.4 22.4 71 2
December 2 53.0 22.1 70 3
December 3 52.6 21.7 69 -5
December 4 52.2 21.5 71 -6
December 5 51.8 21.4 72 -1
December 6 51.4 21.1 70 0
December 7 51.1 20.9 70 -2
December 8 50.9 20.8 73 -4
December 9 50.5 20.7 70 -8
December 10 50.2 20.6 73 -2
December 11 49.9 20.4 69 0
December 12 49.5 20.2 69 -11
December 13 49.2 20.0 69 -15
December 14 49.1 19.8 71 -11
December 15 48.9 19.7 69 -16
December 16 48.7 19.7 65 -12
December 17 48.6 19.6 67 -10
December 18 48.4 19.5 67 -3
December 19 48.2 19.5 66 -7
December 20 48.0 19.4 70 -10
December 21 47.9 19.4 68 -7
December 22 47.7 19.3 67 -6
December 23 47.7 19.3 67 -25
December 24 47.6 19.3 68 -24
December 25 47.5 19.3 68 -18
December 26 47.5 19.3 68 -17
December 27 47.5 19.4 71 -11
December 28 47.4 19.4 65 -7
December 29 47.4 19.5 65 -5
December 30 47.4 19.5 69 -14
December 31 47.5 19.6 65 -15
Weather Station Details
Years Station Coordinates
1901–2024 St. Johns location