As of 13:10 MDT

Grass Range, MT weather in December

75°

Grass Range, Wednesday, 7 October, 13:10

Overcast. Feels like 73°. High 75°, low 46°.

Pressure30.09 inHg

Wind6.4 mph NE

Humidity24%

Visibility6.2 mi

Dew point36°

See detailed hourly forecast

In December, Grass Range, MT averages a high of 35° and a low of 19°. About 0.9 inches of precipitation fall over the month (6 wet days). The record high is 66.2° (2021) and the record low -37.7° (1983). Normals are computed over the last 60 years.

Day	High	Low	Chance of precip.	Record high	Record low
1	38.8°	22.3°	17%	66.2° (2021)	-19.5° (1985)
2	37.9°	22.6°	33%	62.6° (2021)	-22.2° (1985)
3	38.8°	22.6°	20%	57.9° (1989)	-6.3° (1978)
4	38.5°	22.3°	15%	61.3° (1979)	-22° (1972)
5	35.4°	19.8°	22%	62.8° (2023)	-24.2° (1972)
6	35.4°	19.4°	22%	60.6° (2023)	-23.4° (1972)
7	35.6°	19°	15%	61.2° (2024)	-29.2° (2013)
8	35.8°	18.7°	12%	63.1° (2020)	-28.7° (1972)
9	37°	20.3°	15%	58.1° (2020)	-23.1° (1977)
10	37.9°	20.8°	20%	56.5° (2014)	-16.4° (2000)
11	38.3°	21.6°	13%	58.3° (2014)	-19.3° (1961)
12	36.3°	21.2°	22%	59.7° (2017)	-17.1° (2000)
13	35.8°	20.8°	18%	59.4° (1960)	-7.6° (2008)
14	36.7°	21°	20%	57° (1997)	-24.3° (2008)
15	36.1°	20.1°	22%	59.5° (1980)	-29° (2008)
16	36.3°	20.1°	20%	64.9° (1980)	-32.4° (1964)
17	36.5°	21°	10%	59.2° (1980)	-22.4° (1964)
18	35.6°	18°	13%	58.1° (1979)	-18.9° (1984)
19	33.3°	18.1°	23%	59.9° (2004)	-17° (2022)
20	33.4°	18°	18%	54.9° (2023)	-20.7° (1990)
21	33.6°	18.5°	22%	56.1° (2024)	-30.5° (1989)
22	32.4°	17.1°	23%	55.2° (2023)	-30.6° (1989)
23	32.2°	15.6°	20%	54.9° (1994)	-28.3° (1983)
24	33.8°	17.6°	20%	54.9° (1999)	-37.7° (1983)
25	34.9°	18.7°	20%	58.1° (2005)	-27.6° (1983)
26	34.7°	18.5°	15%	59.4° (1980)	-20.9° (1996)
27	34°	18.3°	23%	63° (1980)	-18.8° (2021)
28	31.8°	16°	18%	56.8° (1999)	-21.8° (1968)
29	29.7°	14°	22%	56.3° (1980)	-30.3° (1968)
30	29.3°	13.5°	23%	55° (1963)	-30.8° (1968)
31	29.1°	14.2°	25%	54.9° (1963)	-20.9° (1978)