As of 01:26 MDT

Alpine, MT weather in December

55°

Alpine, Wednesday, 7 October, 01:26

Clear. Feels like 52°. High 71°, low 43°.

Pressure30.09 inHg

Wind2.1 mph SW

Humidity40%

Visibility6.2 mi

Dew point31°

See detailed hourly forecast

In December, Alpine, MT averages a high of 28.1° and a low of 12.8°. About 2.0 inches of precipitation fall over the month (11 wet days). The record high is 53.8° (2025) and the record low -39.3° (1983). Normals are computed over the last 60 years.

Day	High	Low	Chance of precip.	Record high	Record low
1	30.9°	14.7°	35%	46.2° (1995)	-14.8° (1985)
2	31.5°	15.1°	47%	51.1° (2024)	-12.6° (1985)
3	31.1°	14.5°	33%	52.9° (2024)	-15.7° (2009)
4	30.7°	15.6°	30%	49.1° (2020)	-11.7° (1972)
5	29.3°	12.9°	30%	53.6° (2020)	-25.1° (2013)
6	28.8°	12.7°	40%	50.9° (2020)	-25.8° (1972)
7	27.9°	13.1°	38%	49.3° (2024)	-22.5° (2013)
8	28°	12.4°	38%	50.2° (2020)	-20.7° (2016)
9	28.4°	11.8°	27%	46.9° (1981)	-23.3° (2009)
10	29.8°	14.9°	28%	46.6° (2025)	-21.8° (1972)
11	29.5°	14.5°	28%	46.2° (2025)	-20.6° (1961)
12	29.5°	15.3°	42%	47.7° (2017)	-15.9° (1961)
13	28.9°	14.4°	42%	45.7° (2025)	-8.3° (1963)
14	29.1°	14.5°	33%	53.8° (2025)	-23.6° (1967)
15	28.4°	13.1°	37%	49.6° (2025)	-14.8° (2008)
16	28.4°	13.1°	30%	45.3° (1980)	-22.4° (1964)
17	28.2°	13.3°	22%	45.7° (2025)	-32.8° (1964)
18	27.3°	11.7°	23%	46.8° (2023)	-18.2° (2005)
19	26.4°	11.8°	38%	43.7° (2023)	-19.8° (1990)
20	27°	11.5°	32%	48.6° (2024)	-26.3° (1990)
21	27.1°	12.6°	38%	49.6° (2024)	-34.8° (1990)
22	26.1°	11.7°	47%	43.9° (2025)	-37.5° (1990)
23	25.9°	10.4°	45%	49.1° (2025)	-29.4° (1983)
24	27°	11.8°	33%	50.4° (2025)	-39.3° (1983)
25	28.2°	13.1°	35%	48.9° (2025)	-21.1° (1983)
26	27.7°	13.5°	33%	45° (1980)	-6° (2015)
27	27.3°	12.9°	37%	48° (1980)	-3.6° (1965)
28	26.6°	10.6°	40%	46.6° (2023)	-18.6° (1990)
29	25.9°	9.9°	35%	44.2° (2023)	-25.4° (1990)
30	25°	10°	45%	47.3° (2023)	-25.2° (1978)
31	24.6°	9.5°	37%	52.5° (2025)	-26.1° (1978)