Yosemite Valley
September
Weather in Yosemite Valley for September 2025
Your guide to Yosemite Valley weather in September - trends and predictions
Snowfall in Yosemite Valley during September is quite rare, with fewer than 2 snowy days on average.
In general, the average temperature in Yosemite Valley at the beginning of September is 25.1 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 21.4 °F by the end of September.
Precipitation in Yosemite Valley during September is a rare event, with an average of fewer than 2 rainy days.
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Snow Forecast ❄️
Temperatures
Rain 🌧️
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28
Dry days
1
Rainy days
1
Snow days
20°/11°
Temperatures
18 km/h
Avg max wind
35 %
Avg humidity
Yosemite Valley in September average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  24° | 2 23° | 3 24° | 4 26° | 5 27° | 6 27° | 7 25° |
| 8 24° | 9 23° | 10  22° | 11 19° | 12 18° | 13 21° | 14  21° |
| 15 17° | 16  8° | 17 9° | 18  9° | 19  10° | 20 17° | 21 17° |
| 22 19° | 23 22° | 24 21° | 25 20° | 26 21° | 27 22° | 28 22° |
| 29 22° | 30 22° |
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Temperatures trend during September in Yosemite Valley
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 | 24° /14° | 0 mm | 0 cm | |
| Sept. 2 | Sunny | 23° /13° | 0 mm | 0 cm | |
| Sept. 3 | Sunny | 24° /13° | 0 mm | 0 cm | |
| Sept. 4 | Sunny | 26° /14° | 0 mm | 0 cm | |
| Sept. 5 | Sunny | 27° /16° | 0.1 mm | 0 cm | |
| Sept. 6 | Sunny | 27° /17° | 0 mm | 0 cm | |
| Sept. 7 | Sunny | 25° /16° | 0 mm | 0 cm | |
| Sept. 8 | Sunny | 24° /15° | 0 mm | 0 cm | |
| Sept. 9 | Sunny | 23° /13° | 0 mm | 0 cm | |
| Sept. 10 | Cloudy | 22° /12° | 0 mm | 0 cm | |
| Sept. 11 | Sunny | 19° /7° | 0 mm | 0 cm | |
| Sept. 12 | Sunny | 18° /7° | 0 mm | 0 cm | |
| Sept. 13 | Sunny | 21° /9° | 0 mm | 0 cm | |
| Sept. 14 | Partly cloudy | 21° /10° | 0 mm | 0 cm | |
| Sept. 15 | Sunny | 17° /7° | 0 mm | 0 cm | |
| Sept. 16 | Moderate or heavy snow showers | 8° /1° | 1.9 mm | 0.2 cm | |
| Sept. 17 | Partly cloudy | 9° /1° | 0 mm | 0 cm | |
| Sept. 18 | Thundery outbreaks possible | 9° /6° | 0 mm | 0 cm | |
| Sept. 19 | Torrential rain shower | 10° /7° | 35.9 mm | 0 cm | |
| Sept. 20 | Sunny | 17° /8° | 0 mm | 0 cm | |
| Sept. 21 | Sunny | 17° /11° | 0 mm | 0 cm | |
| Sept. 22 | Sunny | 19° /12° | 0 mm | 0 cm | |
| Sept. 23 | Sunny | 22° /14° | 0 mm | 0 cm | |
| Sept. 24 | Cloudy | 21° /13° | 0 mm | 0 cm | |
| Sept. 25 | Sunny | 20° /14° | 0 mm | 0 cm | |
| Sept. 26 | Sunny | 21° /13° | 0 mm | 0 cm | |
| Sept. 27 | Sunny | 22° /14° | 0 mm | 0 cm | |
| Sept. 28 | Sunny | 22° /16° | 0 mm | 0 cm | |
| Sept. 29 | Sunny | 22° /15° | 0 mm | 0 cm | |
| Sept. 30 | Partly cloudy | 22° /13° | 0 mm | 0 cm | |
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Important Notice
Our weather forecast for Yosemite Valley 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 Yosemite Valley forecast closer to your planned date for the most up-to-date weather information.
Yosemite Valley in September - FAQ
What are the expected maximum and minimum temperatures in Yosemite Valley during September?
Enjoy moderate daytime temperatures of up to 20° and cooler nights around 11°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Yosemite Valley during September?
In September, Yosemite Valley can expect light to moderate rainfall, totaling 37.8 mm across approximately 1 days. Occasional showers are possible, and planning ahead for them could be helpful.
Will it snow in Yosemite Valley in September 2025?
Yosemite Valley typically sees 0.19 cm of snowfall during September.
What are the typical wind conditions in Yosemite Valley during September?
The average wind speed in Yosemite Valley during September is 18 km/h, suggesting breezy to windy conditions, depending on your activities.
Yosemite Valley snow forecast September 2025
Track daily snowfall levels and discover Yosemite Valley’s snowy potential this September ❄️
September rainfall patterns in Yosemite Valley
Explore the daily rainfall trends and prepare for Yosemite Valleys September weather 💧
UV exposure in Yosemite Valley during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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Where is Yosemite Valley?Get accurate weather forecasts for Yosemite Valley, located at latitude 37.741 and longitude -119.578. Stay updated with localized weather information tailored for Yosemite Valley.
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