As of 05:19 MDT

Helena, MT weather in December

48°

Helena, Wednesday, 7 October, 05:19

Mostly clear. Feels like 47°. High 80°, low 47°.

Pressure30.18 inHg

Wind3.4 mph W

Humidity46%

Visibility6.2 mi

Dew point29°

See detailed hourly forecast

In December, Helena, MT averages a high of 28.9° and a low of 13.2°. About 1.2 inches of precipitation fall over the month (8 wet days). The record high is 64.2° (2021) and the record low -44° (2022). Normals are computed over the last 60 years.

Day	High	Low	Chance of precip.	Record high	Record low
1	33.3°	16.9°	27%	64.2° (2021)	-18.2° (1985)
2	33.4°	17.1°	33%	59.5° (2021)	-11.7° (1985)
3	32.7°	17.2°	23%	48.9° (1989)	-10.1° (1972)
4	32.9°	16.3°	25%	51.1° (1987)	-16.8° (1972)
5	31.3°	15.6°	28%	58.1° (2023)	-16.4° (2013)
6	30.6°	14.5°	23%	53.6° (2023)	-18.9° (2013)
7	29.3°	13.6°	32%	53.6° (2024)	-19.3° (2013)
8	28.8°	12.7°	17%	54° (2020)	-26.3° (1972)
9	30°	13.3°	23%	49.5° (1990)	-22.4° (2009)
10	30.9°	15.8°	30%	55.6° (2025)	-19.7° (1961)
11	31.6°	16°	18%	56.3° (2025)	-21.3° (1961)
12	30.9°	16.3°	32%	46° (2021)	-14.4° (1961)
13	29.8°	14.7°	28%	42.1° (2017)	-13° (2008)
14	29.8°	14.5°	22%	45.1° (2018)	-20.9° (2008)
15	29.1°	13.3°	32%	49.8° (2025)	-26.7° (1964)
16	29.5°	13.3°	25%	52.2° (2025)	-33.5° (1964)
17	29.7°	13.6°	18%	49.6° (1980)	-35.9° (1964)
18	28.2°	11.3°	18%	46.9° (2024)	-15.7° (1964)
19	27.1°	11.5°	25%	50.5° (2025)	-25.2° (1990)
20	26.8°	11.5°	20%	49.1° (2019)	-27.4° (1990)
21	26.8°	12.2°	32%	53.4° (2019)	-28.8° (2022)
22	26.2°	11.5°	25%	48.2° (2019)	-44° (2022)
23	27°	9.9°	25%	46° (2024)	-27.9° (2022)
24	27.3°	12°	27%	50° (2025)	-31.2° (1983)
25	27.9°	12.2°	28%	51.1° (2025)	-17.5° (1983)
26	28°	12.2°	22%	49.3° (2025)	-12.5° (1996)
27	27.9°	11.8°	33%	49.1° (1980)	-12.8° (2021)
28	26.2°	10.2°	30%	42.1° (2024)	-25.4° (1968)
29	24.6°	9°	32%	40.8° (1980)	-29.4° (1990)
30	24.3°	8.8°	28%	39.7° (1998)	-27.9° (1990)
31	24.4°	9.5°	33%	45.7° (1980)	-22.7° (1968)