Weather in Mammoth Lakes: September
 |
Average day temperature: | 68.0°F |
| Average night temperature: | 45.9°F | |
 |
Number of sunny days: | 26 days |
| Day length: | 11.8 - 13.0 hours | |
 |
Number of rainy days: | 0 days |
| Precipitation totals: | 0.1 in. | |
| more information | ||
14 days
forecast
forecast
| Mammoth Lakes |
weather in
October
October
| Mammoth Lakes |
Air temperature in September, °F
Show year:
2025
2024
2023
The highest day temperature during September of 2025 was 71°F. At the same time the lowest night temperature was 38°F. Daily and nightly averages during September were 61.7°F and 45.1°F.
Sunny, partly cloudy and cloudy days
Mostly all days in September are sunny but cloudy days are also possible.
Precipitation total in September, in.
Precipitation total value in Mammoth Lakes in September is 0.1 in. Other months of the year show relatively similar values.
Wind speed in September, mph
The average wind speed value in September is 5.5 mph
Average sunny hours
This chart shows average number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The average number of sunny hours in September is: 10.6.
Best time for vacation in Mammoth Lakes
Mammoth Lakes on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Mammoth Lakes
Local time: 20:54
December 04, thursday
2100
28°F
SE
2 mph
2 mph
December 05, friday
0000
28°F
S
1 mph
1 mph
0300
28°F
SE
1 mph
1 mph
0600
30°F
S
1 mph
1 mph
0900
32°F
S
2 mph
2 mph
1200
41°F
SW
5 mph
5 mph
1500
45°F
S
4 mph
4 mph
1800
36°F
NE
1 mph
1 mph
