Weather in Helena in May
The weather in Helena in May is cold, when degrees are between 4 and 21 and there are 16 days of rain and 2 days of snow in average. Therefore, if you are planning a trip to Helena in May, warm clothes and gloves are highly recommended.
Avg Temp
4° - 21°
Avg Rainy Days
16
Avg Dry Days
15
Avg Snow Days
2
Weather Facts - Helena in May
* The warmest temperature recorded in in May is 34°C
* The coldest temperature recorded in Helena in May is (-7°C)
* The average rainfall in Helena in May is 49 mm