Yosemite Park Weather in September
September in Yosemite Park typically sees daytime highs of 18°C (64°F) and nighttime lows of 4°C (39°F). Minimal rainfall is typical for this month. It falls within the summer season.
Rainfall in Yosemite Park in September
Typically around 3 days of rainfall are expected, averaging 13 mm (0.5 in) for the month. The occasional light shower is possible, but rain is rarely an issue this month.
Temperature in Yosemite Park in September
Yosemite Park in September is worth a visit. The temperature is perfect, with 18°C (64°F) during the day and 4°C (39°F) at night. The month of September belongs to the summer season. Temperatures can feel cooler in the morning and evening, so layering is often the best approach. Nights drop to 4°C (39°F). Cold nights like these are actually great for sleeping well, as long as you have a warm enough duvet.If your ideal day consists of dry skies and pleasant temperatures, July, August and September typically offer the best circumstances for Yosemite Park .
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 Yosemite Park 's climate page.
Yosemite Park Temperature in September
Min Temperature
4°C (39°F)
Max Temperature
18°C (64°F)
Chance of Rain
10%
Precipitation
13 mm (0.5 in)
Rainy days
3 days
Historical weather for Yosemite Park in September
Browse day-by-day weather records for Yosemite Park spanning 43 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Yosemite Park historical weather extremes in September
The extremes listed below come from historical weather data collected in Yosemite Park from 2006 through 2025.
- The warmest day in September was on September 6, 2022, with a maximum of 33°C (91°F).
- The lowest daytime temperature in September was 6°C (43°F), recorded on September 22, 2007.
- The lowest overnight temperature recorded in September was -5°C (23°F) (September 28, 2013).
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 →
perfect weather
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tolerable
unpleasant
poor
What to Wear in Yosemite Park in September
Pleasant temperatures in September mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. With minimal rainfall expected, you can leave the rain gear at home.What To Do in Yosemite Park in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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 Yosemite Park 's climate page.
See the full Yosemite Park climate overview or explore weather in the United States of America.
