Weather in Helena in December
The weather in Helena in December is extremely cold, when degrees are between -11 and 2 and there are 8 days of rain and 10 days of snow in average. Therefore, if you are planning a trip to Helena in December, warm clothes and gloves are highly recommended.
Avg Temp
(-11°) - 2°
Avg Rainy Days
8
Avg Dry Days
23
Avg Snow Days
10
Weather Facts - Helena in December
* The warmest temperature recorded in in December is 17°C
* The coldest temperature recorded in Helena in December is (-37°C)
* The average rainfall in Helena in December is 10 mm