Mammoth Lakes
September
Weather in Mammoth Lakes for September 2025
Your guide to Mammoth Lakes weather in September - trends and predictions
Snowfall in Mammoth Lakes during September is quite rare, with fewer than 2 snowy days on average.
In general, the average temperature in Mammoth Lakes at the beginning of September is 24 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 20.6 °F by the end of September.
With an average of 2 rainy days, Mammoth Lakes experiences minimal rainfall in September.
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Snow Forecast ❄️
Temperatures
Rain 🌧️
More
27
Dry days
2
Rainy days
1
Snow days
20°/6°
Temperatures
18 km/h
Avg max wind
36 %
Avg humidity
Mammoth Lakes Weather September
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Sun. | Mon. | Tue. | Wed. | Thu. | Fri. | Sat. |
---|---|---|---|---|---|---|
1 23° | 2 22° | 3 23° | 4 25° | 5 26° | 6 25° | |
7 24° | 8 23° | 9 22° | 10 22° | 11 21° | 12 20° | 13 22° |
14 21° | 15 17° | 16 8° | 17 13° | 18 12° | 19 10° | 20 15° |
21 17° | 22 18° | 23 19° | 24 20° | 25 19° | 26 21° | 27 22° |
28 22° | 29 21° | 30 19° |
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Temperatures trend during September in Mammoth Lakes
See the weather trend as well as the moving average line
September weather day by day
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Date | Weather | Temperatures | Rain | Snow | More |
---|---|---|---|---|---|
Sept. 1 | Sunny | 23° /9° | 0 mm | 0 cm | |
Sept. 2 | Sunny | 22° /8° | 0 mm | 0 cm | |
Sept. 3 | Sunny | 23° /7° | 0 mm | 0 cm | |
Sept. 4 | Partly cloudy | 25° /8° | 0 mm | 0 cm | |
Sept. 5 | Patchy rain possible | 26° /10° | 0.1 mm | 0 cm | |
Sept. 6 | Patchy rain possible | 25° /11° | 0 mm | 0 cm | |
Sept. 7 | Partly cloudy | 24° /10° | 0 mm | 0 cm | |
Sept. 8 | Sunny | 23° /9° | 0 mm | 0 cm | |
Sept. 9 | Sunny | 22° /8° | 0 mm | 0 cm | |
Sept. 10 | Overcast | 22° /6° | 0 mm | 0 cm | |
Sept. 11 | Sunny | 21° /3° | 0 mm | 0 cm | |
Sept. 12 | Sunny | 20° /1° | 0 mm | 0 cm | |
Sept. 13 | Sunny | 22° /3° | 0 mm | 0 cm | |
Sept. 14 | Cloudy | 21° /6° | 0 mm | 0 cm | |
Sept. 15 | Sunny | 17° /2° | 0 mm | 0 cm | |
Sept. 16 | Light snow showers | 8° /-1° | 0.8 mm | 0.3 cm | |
Sept. 17 | Partly cloudy | 13° /-1° | 0 mm | 0 cm | |
Sept. 18 | Thundery outbreaks possible | 12° /0° | 6.2 mm | 0 cm | |
Sept. 19 | Moderate or heavy rain with thunder | 10° /3° | 32.7 mm | 0 cm | |
Sept. 20 | Thundery outbreaks possible | 15° /2° | 0 mm | 0 cm | |
Sept. 21 | Cloudy | 17° /5° | 0 mm | 0 cm | |
Sept. 22 | Partly cloudy | 18° /4° | 0 mm | 0 cm | |
Sept. 23 | Sunny | 19° /6° | 0 mm | 0 cm | |
Sept. 24 | Sunny | 20° /6° | 0 mm | 0 cm | |
Sept. 25 | Sunny | 19° /7° | 0 mm | 0 cm | |
Sept. 26 | Sunny | 21° /5° | 0 mm | 0 cm | |
Sept. 27 | Sunny | 22° /7° | 0 mm | 0 cm | |
Sept. 28 | Sunny | 22° /8° | 0 mm | 0 cm | |
Sept. 29 | Sunny | 21° /9° | 0 mm | 0 cm | |
Sept. 30 | Cloudy | 19° /7° | 0 mm | 0 cm | |
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Important Notice
Our weather forecast for Mammoth Lakes in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Mammoth Lakes forecast closer to your planned date for the most up-to-date weather information.
Mammoth Lakes in September - FAQ
What are the expected maximum and minimum temperatures in Mammoth Lakes during September?
Enjoy moderate daytime temperatures of up to 20° and cooler nights around 6°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Mammoth Lakes during September?
In September, Mammoth Lakes can expect light to moderate rainfall, totaling 39.8 mm across approximately 2 days. Occasional showers are possible, and planning ahead for them could be helpful.
Will it snow in Mammoth Lakes in September 2025?
Mammoth Lakes typically sees 0.3 cm of snowfall during September.
What are the typical wind conditions in Mammoth Lakes during September?
The average wind speed in Mammoth Lakes during September is 18 km/h, suggesting breezy to windy conditions, depending on your activities.
Mammoth Lakes snow forecast September 2025
Track daily snowfall levels and discover Mammoth Lakes’s snowy potential this September ❄️
September rainfall patterns in Mammoth Lakes
Explore the daily rainfall trends and prepare for Mammoth Lakess September weather 💧
UV exposure in Mammoth Lakes during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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Get accurate weather forecasts for Mammoth Lakes, located at latitude 37.649 and longitude -118.972. Stay updated with localized weather information tailored for Mammoth Lakes.
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