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Yosemite National Park (CA)
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Yosemite National Park (CA)
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Weather in Yosemite National Park, California for September 2025

Your guide to Yosemite National Park weather in September - trends and predictions

    Official Weather Alert ⚠️

  • Flood Watch - See hour by hour.

    • Snow Forecast ❄️

  • Snowfall in Yosemite National Park during September is quite rare, with fewer than 2 snowy days on average.
    According to Yosemite National Park snow forecast for September 2025, 2 snowy days are expected until the end of the month. The closest date with snow is Saturday, September 27.

    • Temperatures

  • Until now, September 2025 in Yosemite National Park is cooler than usual, with temperatures averaging 16.1 °F, this is -3.1 °F below the typical seasonal average.

  • The forecast for the next days in Yosemite National Park predicts a temperature of 14.4 °F, which is cooler than the historical average.

  • In general, the average temperature in Yosemite National Park at the beginning of September is 21.9 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 10.7 °F by the end of September.

    • Rain 🌧️

  • With an average of 2 rainy days, Yosemite National Park experiences minimal rainfall in September.

    • More

  • New! Chat with our AI weatherman - it’s amazing and free.

Average dry days
27
Dry days
Average rainy days
2
Rainy days
Average snowy days
1
Snow days
Average temperatures
19°/9°
Temperatures
Average wind speed
20 km/h
Avg max wind
Average humidity
37 %
Avg humidity

Yosemite National Park Weather September

Move between months or click on a day
August
October
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1
Sunny
23°
2
Sunny
21°
3
Sunny
21°
4
Sunny
22°
5
Patchy rain possible
23°
6
Partly cloudy
22°
7
Sunny
21°
8
Sunny
20°
9
Sunny
16°
10
Overcast
14°
11
Sunny
14°
12
Sunny
16°
13
Sunny
18°
14
Cloudy
19°
15
Sunny
18°
16
Patchy light snow with thunder
13°
17
Weather Alert Sunny
21°
18
Patchy rain possible
16°
19
Heavy rain
13°
20
Sunny
16°
21
Sunny
20°
22
Sunny
22°
23
Patchy rain possible
19°
24
Patchy rain possible
16°
25
Sunny
13°
26
Patchy rain possible
6°
27
Patchy rain possible
5°
28
Patchy rain possible
8°
29
Sunny
13°
30
Sunny
14°

Temperatures trend during September in Yosemite National Park

See the weather trend as well as the moving average line

September weather in Yosemite National Park day by day

Click on a date for more information
August October
Date Weather Temperatures Rain Snow More
Sept. 1 Sunny
Sunny
 23° /13° 0 mm 0 cm
Sept. 2 Sunny
Sunny
 21° /12° 0 mm 0 cm
Sept. 3 Sunny
Sunny
 21° /11° 0 mm 0 cm
Sept. 4 Sunny
Sunny
 22° /12° 0 mm 0 cm
Sept. 5 Patchy rain possible
Patchy rain possible
 23° /13° 0.1 mm 0 cm
Sept. 6 Partly cloudy
Partly cloudy
 22° /12° 0 mm 0 cm
Sept. 7 Sunny
Sunny
 21° /11° 0 mm 0 cm
Sept. 8 Sunny
Sunny
 20° /10° 0 mm 0 cm
Sept. 9 Sunny
Sunny
 16° /8° 0 mm 0 cm
Sept. 10 Overcast
Overcast
 14° /6° 0 mm 0 cm
Sept. 11 Sunny
Sunny
 14° /4° 0 mm 0 cm
Sept. 12 Sunny
Sunny
 16° /5° 12.1 mm 0 cm
Sept. 13 Sunny
Sunny
 18° /7° 0 mm 0 cm
Sept. 14 Cloudy
Cloudy
 19° /8° 0 mm 0 cm
Sept. 15 Sunny
Sunny
 18° /7° 0 mm 0 cm
Sept. 16 Patchy light snow with thunder
Patchy light snow with thunder
 13° /6° 1.2 mm 0.5 cm
Sept. 17 Sunny
Sunny
 21° /13° 0 mm 0 cm
Sept. 18 Patchy rain possible
Patchy rain possible
 16° /10° 2.6 mm 0 cm
Sept. 19 Heavy rain
Heavy rain
 13° /10° 48.3 mm 0 cm
Sept. 20 Sunny
Sunny
 16° /9° 0 mm 0 cm
Sept. 21 Sunny
Sunny
 20° /8° 0 mm 0 cm
Sept. 22 Sunny
Sunny
 22° /10° 0 mm 0 cm
Sept. 23 Patchy rain possible
Patchy rain possible
 19° /5° 2.8 mm 0 cm
Sept. 24 Patchy rain possible
Patchy rain possible
 16° /4° 0.5 mm 0 cm
Sept. 25 Sunny
Sunny
 13° /4° 0 mm 0 cm
Sept. 26 Patchy rain possible
Patchy rain possible
 6° /4° 0.7 mm 0 cm
Sept. 27 Patchy rain possible
Patchy rain possible
 5° /2° 2.5 mm 0.9 cm
Sept. 28 Patchy rain possible
Patchy rain possible
 8° /1° 1 mm 0.3 cm
Sept. 29 Sunny
Sunny
 13° /1° 0 mm 0 cm
Sept. 30 Sunny
Sunny
 14° /2° 0 mm 0 cm
Next
Important Notice
Our weather forecast for Yosemite National Park 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 National Park forecast closer to your planned date for the most up-to-date weather information.
Change Month
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Yosemite National Park in September - FAQ

What are the expected maximum and minimum temperatures in Yosemite National Park during September?
Enjoy moderate daytime temperatures of up to 19° and cooler nights around 9°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Yosemite National Park during September?
In September, Yosemite National Park can expect light to moderate rainfall, totaling 21.7 mm across approximately 2 days. Occasional showers are possible, and planning ahead for them could be helpful.
Will it snow in Yosemite National Park in September 2025?
Yosemite National Park typically sees 0.93 cm of snowfall during September.
What are the typical wind conditions in Yosemite National Park during September?
The average wind speed in Yosemite National Park during September is 20 km/h, suggesting breezy to windy conditions, depending on your activities.

Yosemite National Park snow forecast September 2025

Track daily snowfall levels and discover Yosemite National Park’s snowy potential this September ❄️

September rainfall patterns in Yosemite National Park

Explore the daily rainfall trends and prepare for Yosemite National Parks September weather 💧

UV exposure in Yosemite National Park during September

Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️

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Location coordinates Where is Yosemite National Park?

Get accurate weather forecasts for Yosemite National Park, located at latitude 37.848 and longitude -119.557. Stay updated with localized weather information tailored for Yosemite National Park.

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