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Mt. Vernon December Weather

Averages and records for weather in Mt. Vernon, Indiana in the month of December.

Typical Mt. Vernon December Weather 1991–2020
Average daily high	46.0 °F
Average daily low	30.0 °F
Average monthly precipitation	3.5 inches
Average monthly snow	1.4 inches
Daily chance of precipitation	31.9%
Daily chance of snow	2.4%

Mt. Vernon December Weather Records 1888–2024
Highest temperature	77 °F	December 3, 1982
Lowest temperature	-16 °F	December 22, 1989
Highest daily low	60 °F	December 3, 1982
Lowest daily high	-4 °F	December 23, 1989
Hottest average high temperature	56.1 °F	1923
Coldest average high temperature	31.6 °F	1989
Most daily precipitation	4.5 inches	December 22, 2013
Most monthly precipitation	10.9 inches	1982
Most daily snow	10.0 inches	December 27, 1939
Most monthly snow	17.0 inches	1917

Note: Daily averages are a moving average which includes 14 days before and after

Day	Average (°F)		Record (°F)
Day	High	Low	High	Low
December 1	50.6	33.3	74	5
December 2	50.3	33.1	68	9
December 3	50.0	32.9	77	0
December 4	49.6	32.6	73	12
December 5	49.2	32.3	72	11
December 6	48.8	32.0	70	8
December 7	48.5	31.8	71	6
December 8	48.1	31.6	68	0
December 9	47.9	31.4	70	-6
December 10	47.7	31.1	70	-8
December 11	47.2	30.8	74	-7
December 12	46.9	30.5	69	-12
December 13	46.6	30.3	70	-6
December 14	46.4	30.2	70	-2
December 15	46.1	29.9	70	-10
December 16	45.8	29.8	72	-8
December 17	45.6	29.7	70	-7
December 18	45.3	29.4	69	-2
December 19	45.1	29.2	65	-5
December 20	44.9	29.1	67	-8
December 21	44.8	28.9	66	-4
December 22	44.6	28.7	68	-16
December 23	44.4	28.5	68	-15
December 24	44.2	28.4	65	-14
December 25	44.0	28.3	69	-8
December 26	43.9	28.1	69	-7
December 27	43.6	27.9	68	-1
December 28	43.5	27.7	72	-11
December 29	43.5	27.6	67	-1
December 30	43.4	27.5	70	-5
December 31	43.2	27.3	68	-5

Weather Station Details

Years	Station	Coordinates
1888–2024	Mt Vernon	location