Mammoth Lakes in september: average Weather, Temperature and Climate
Weather in Mammoth Lakes in september 2025
The weather in Mammoth Lakes in the month of september comes from statistical datas on the past years. You can view the weather statistics for the whole month, but also by using the tabs for the beginning, the middle and the end of the month.
Average weather throughout september
good weather 19.3cm
Weather at 6am
50°F
Clear/Sunny
89% of time
8%
3%
2%
Weather at 12pm
68°F
Clear/Sunny
82% of time
10%
6%
2%
Weather at 6pm
52°F
Clear/Sunny
86% of time
9%
5%
2%
Weather at 3am
41°F
88%
10%
2%
2%
Evolution of daily average temperature and precipitation in Mammoth Lakes in september
These charts show the evolution of average minimum/maximum temperatures as well as average daily precipitation volume in Mammoth Lakes in september.
The climate of Mammoth Lakes in september is good
The climate in september in Mammoth Lakes is dry ; it does not rain often (0.4in of precipitation over 1 days).
The climate enjoyable in that area this month. The high seasonal norm is 70°F. On average, the recorded minimum temperature is 50°F. Thus, the mean temperature average on this month of september in Mammoth Lakes is 59°F. Note that these seasonal averages are in contrast with those observed in Mammoth Lakes in september with a maximum record of 85°F in 2010 and a minimum record of 22°F in 2013. You can hope to have about 24 days with temperatures over 65°F, or 80% of the month.
Day length in Mammoth Lakes in september is 12:25. The sun rises at 05:38 and sunset is at 18:03.
With good weather conditions, the month of september is advisable to go in that area.
Seasonal average climate and temperature of Mammoth Lakes in september
Check below seasonal norms These statistics are generated from the weather statements earlier years of the month of september.
| September | |||||
| Outside temperature | |||||
| Average temperature | 59°F | ||||
| Highest temperature | 70°F | ||||
| Lowest temperature | 50°F | ||||
| Highest record temperature | 85°F (2010) | ||||
| Lowest record temperature | 22°F (2013) | ||||
| Number of days at +65°F | 24 day(s) (80%) | ||||
| Number of days at -32°F | 1 day(s) (3%) | ||||
| Wind | |||||
| Wind speed | 14km/h | ||||
| Wind temperature | 49°F | ||||
| Precipitation (rainfall) | |||||
| Rainfall | 0.4in | ||||
| Number of days with rainfall | 1 day(s) (2%) | ||||
| Record daily rainfall | 0.4in (2011) | ||||
| Snowfall | 19.3cm | ||||
| Other climate data | |||||
| Humidity | 39% | ||||
| Visibility | 9.94km | ||||
| Cloud cover | 7% | ||||
| UV index | 5 | ||||
| Daily sunshine hours | 13 | ||||
| Sunrise and sunset | |||||
| Time of sunrise | 05:38 | ||||
| Time of sunset | 18:03 | ||||
| Length of day | 12:25 | ||||
| Our opinion about the weather in september | |||||
| Our opinion at whereandwhen.net | good | ||||
How was the weather last september?
Here is the day by day recorded weather in Mammoth Lakes in september 2024:
49°F to 70°F
47°F to 67°F
47°F to 70°F
49°F to 74°F
52°F to 74°F
54°F to 74°F
54°F to 70°F
50°F to 70°F
47°F to 68°F
45°F to 67°F
41°F to 65°F
34°F to 65°F
40°F to 68°F
43°F to 67°F
40°F to 59°F
31°F to 41°F
32°F to 52°F
34°F to 50°F
36°F to 47°F
38°F to 58°F
43°F to 59°F
45°F to 61°F
47°F to 65°F
49°F to 67°F
49°F to 63°F
47°F to 68°F
50°F to 70°F
50°F to 68°F
50°F to 68°F
49°F to 65°F
Map: other cities in California in september
Cities near Mammoth Lakes:
| Mono Lake in september | good weather |
| Sierra National Forest in september | good weather |
| Yosemite National Park in september | good weather |
| Inyo National Forest in september | perfect weather |
| Big Pine in september | perfect weather |
| Kings Canyon National Park in september | good weather |
| Stanislaus National Forest in september | perfect weather |
| Sequoia National Park in september | good weather |
| Lone Pine in september | perfect weather |
| Visalia in september | perfect weather |
| Lake Tahoe in september | good weather |
| Stockton in september | perfect weather |
Click over cities on the map for information about the weather in september.
Mammoth Lakes
perfect weather
good
tolerable
bad
very bad
Weather data for Mammoth Lakes in september:
Weather data for Mammoth Lakes for september are derived from an average of the weather forecast since 2009 in Mammoth Lakes. There is a margin of error and these forecasts are to be considered as general information only. The weather in Mammoth Lakes can vary slightly from year to year, but this data should limit surprises. So you can pack your bags or check for the best time in year to go to Mammoth Lakes.