Mammoth Lakes Weather in May
What's the weather like in Mammoth Lakes (California) in May 2025?
The climate in Mammoth Lakes during May can be summarized as cool and reasonably dry.
May is in the spring in Mammoth Lakes and is typically the 6th warmest month of the year. Daytime maximum temperatures average around a cool 13°C (56°F), whilst at night -2°C (29°F) is normal.
| Daytime temperature | 13.4°C 56.1°F |
|---|---|
| Nightly temperature | -1.8°C 28.8°F |
| Average temperature | 5.8°C 42.4°F |
| Daily sunshine | 11.6 hrs |
| Avg rainfall | 32 mm 1.3 ins |
| Rainy days | 5 days |
| Sea temperature | 13°C 55.4°F |
| Humidity | 45% |
| Windspeed | 16.6kph 10 mph |
On average May is the 5th driest month of the year in Mammoth Lakes with around 32mm 1.3 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 5 days, although this may vary considerably.
On the flip side this corresponds to an average of 11.6 hours of sunshine per day.
May temperatures in Mammoth Lakes
May rainfall
May hourly sunshine
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Mammoth Lakes in May 2025.
Other monthly averages
Mammoth Lakes weather stats
| Hottest month: | July | 23.6°C 74.5°F |
|---|---|---|
| Driest month: | September | 20mm 0.8ins |
| Sunniest month: | July | 12.8hrs |
| Coldest month: | January | 3.7°C 38.7°F |
| Wettest month: | January | 125mm 4.9ins |
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