Grandes Jorasses (4208m) — September
Monthly conditions and weather data
Weather Quality
3
Temperature
-7–3°C
Precipitation
130 mm
Crowd Level
2
Snow Likelihood
3/5
Daylight Hours
12.5h
Avg Temperature
-2°C
Summary
September on Grandes Jorasses: cool conditions (-7C to 3C), wet (130mm). Some snow possible.