Mount Rainier (4392m) — September
Monthly conditions and weather data
Weather Quality
3
Temperature
-7–3°C
Precipitation
133 mm
Crowd Level
2
Snow Likelihood
3/5
Daylight Hours
12.5h
Avg Temperature
-2°C
Summary
September on Mount Rainier: cool conditions (-7C to 3C), wet (133mm). Some snow possible.