As of 20:39 MDT

Simpson, MT weather in December

64°

Simpson, Tuesday, 6 October, 20:39

Overcast. Feels like 61°. High 78°, low 44°.

Pressure29.97 inHg

Wind3.8 mph W

Humidity39%

Visibility6.2 mi

Dew point38°

See detailed hourly forecast

In December, Simpson, MT averages a high of 29° and a low of 13.1°. About 0.7 inches of precipitation fall over the month (5 wet days). The record high is 62.2° (2021) and the record low -45.8° (1983). Normals are computed over the last 60 years.

Day	High	Low	Chance of precip.	Record high	Record low
1	32.7°	16°	17%	62.2° (2021)	-24.2° (1985)
2	31.8°	16.3°	18%	53.6° (2021)	-31.7° (1985)
3	33.4°	16°	13%	52.3° (1987)	-23.6° (1972)
4	32.5°	15.6°	15%	53.1° (1989)	-26° (1972)
5	29.5°	15.3°	17%	59.4° (2023)	-16.8° (1970)
6	29.5°	14.2°	17%	54.5° (2023)	-22.2° (1972)
7	29.3°	14°	8%	48.7° (1987)	-27° (1972)
8	30.6°	13.8°	10%	50.7° (1979)	-36.9° (1977)
9	31.8°	14.9°	8%	52.9° (1975)	-41.4° (1977)
10	32.2°	16°	22%	50.4° (2017)	-19.8° (1977)
11	32°	16°	17%	50° (2004)	-21.5° (1961)
12	30.6°	16.5°	18%	51.3° (2017)	-24.5° (1961)
13	30.2°	15.1°	10%	52.7° (1998)	-13.7° (1963)
14	31.1°	14.7°	17%	50.5° (1979)	-23.3° (2008)
15	30.7°	14.5°	17%	55.8° (1980)	-31.7° (2008)
16	31.5°	14.9°	10%	58.5° (1980)	-32.6° (2000)
17	30.9°	15.1°	15%	52.2° (1976)	-29.2° (1964)
18	28.4°	11.8°	15%	50.5° (1979)	-30.6° (1983)
19	27.9°	12.7°	13%	52.5° (2004)	-25.8° (1961)
20	28.2°	12.4°	13%	48.4° (1994)	-27.4° (2022)
21	26.6°	13.1°	17%	51.1° (1974)	-42.9° (1989)
22	25.5°	10.2°	23%	50° (2005)	-41.1° (1989)
23	25.7°	8.8°	22%	48.6° (2005)	-32.3° (1983)
24	26.8°	10.8°	12%	50.7° (2005)	-45.8° (1983)
25	27.5°	11.8°	10%	52.9° (2005)	-32.3° (1983)
26	27.7°	12.4°	15%	48.7° (1976)	-26.3° (2017)
27	27.5°	12.6°	27%	55.4° (1980)	-19.5° (2017)
28	25.9°	9.3°	23%	52.5° (2011)	-30.5° (1968)
29	23.2°	7.5°	27%	48.6° (1980)	-43.6° (1968)
30	23.5°	6.4°	20%	48.4° (1980)	-32.3° (1978)
31	23°	7.2°	15%	50.7° (1963)	-37.8° (1992)