Mount St. Helens (2549m) — May
Monthly conditions and weather data
Weather Quality
1
Temperature
-23–-13°C
Precipitation
195 mm
Crowd Level
2
Snow Likelihood
5/5
Daylight Hours
14.8h
Avg Temperature
-18°C
Summary
May on Mount St. Helens: frigid conditions (-23C to -13C), wet (195mm). Heavy snow likely.