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Mammoth Lakes Weather in September

September in Mammoth Lakes brings pleasant temperatures, with daytime highs of 22°C (72°F) and nights around 3°C (37°F). Rainfall is at its lowest this month, making it one of the more reliable months to be outdoors.

Rainfall in Mammoth Lakes in September

With the least rainfall of the year, this month offers good conditions for outdoor exploration. Take advantage of the dry weather to plan your activities. You can expect rain on around 2 days based on historical patterns, with 6 mm (0.2 in) average for the month. Rain days are few and the total is low, so this is a largely dry month. Any showers that do occur tend to be brief.

Temperature in Mammoth Lakes in September

September is one of the better months to visit Mammoth Lakes. Expect 22°C (72°F) during the day and 3°C (37°F) at night. Experience the summer season in September. Conditions are often most pleasant around the middle of the day. At 3°C (37°F) overnight, it gets properly cold after dark. On the bright side, cold nights tend to make for excellent sleeping conditions.

So this is a great month to visit if you prefer dry days with pleasant temperatures.

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For a detailed overview over the year and the best time to visit the United States of America, check out our Mammoth Lakes's climate page.

Mammoth Lakes Temperature in September

Min TemperatureMin Temperature 3°C (37°F)  
Max TemperatureMax Temperature 22°C (72°F)  
Chance of RainChance of Rain 7%  
PrecipitationPrecipitation 6 mm (0.2 in)  
Rainy daysRainy days 2 days  

Best Places in the United States of America in September

Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in September →

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Legend perfect weather pleasant tolerable unpleasant poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).

What to Wear in Mammoth Lakes in September

For Mammoth Lakes in September, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. Almost no rain is expected, so no need to bring rain gear.

What To Do in Mammoth Lakes in September

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Cycling
10/10
Walking
10/10
Camping
5/10
Outdoor sports
10/10

Select a Month

Check the conditions for any month of the year.

For a detailed overview over the year and the best time to visit the United States of America, check out our Mammoth Lakes's climate page.

More climate data for Mammoth Lakes