easeweather.com
Yosemite Valley (CA)
Akron (OH)Albuquerque (NM)Alexandria (VA)Anaheim (CA)Anchorage (AK)Arlington (VA)Asheville (NC)Atlanta (GA)Atlantic City (NJ)Austin (TX)Baltimore (MD)Baton Rouge (LA)Birmingham (AL)Boston (MA)Bowling Green (KY)Brooklyn (NY)Buffalo (NY)Cape Coral (FL)Charlotte (NC)Chattanooga (TN)Chicago (IL)Cincinnati (OH)Cleveland (OH)Colorado Springs (CO)Columbus (OH)Corpus Christi (TX)Dallas (TX)Dayton (OH)Daytona Beach (FL)Denver (CO)Des Moines (IA)Detroit (MI)El Paso (TX)Fairbanks (AK)Fort Lauderdale (FL)Fort Wayne (IN)Fort Worth (TX)Gatlinburg (TN)Grand Rapids (MI)Harrisburg (PA)Honolulu (HI)Houston (TX)Huntsville (AL)Indianapolis (IN)Jackson (MS)Jacksonville (FL)Juneau (AK)Kansas City (MO)Ketchikan (AK)Key West (FL)Knoxville (TN)Las Vegas (NV)Lexington (KY)Lincoln (NE)Little Rock (AR)Los Angeles (CA)Louisville (KY)Madison (WI)Manhattan (NY)Memphis (TN)Miami (FL)Milwaukee (WI)Minneapolis (MN)Mobile (AL)Montgomery (AL)Nashville (TN)New Orleans (LA)New York City (NY)Newark (NJ)Oklahoma City (OK)Omaha (NE)Orlando (FL)Philadelphia (PA)Phoenix (AZ)Pittsburgh (PA)Portland (OR)Richmond (VA)Sacramento (CA)Salt Lake City (UT)San Antonio (TX)San Diego (CA)San Francisco (CA)San Jose (CA)Savannah (GA)Seattle (WA)Sitka (AK)Skagway (AK)Springfield (MO)St. Louis (MO)St. Petersburg (FL)Tallahassee (FL)Tampa (FL)Toledo (OH)Traverse City (MI)Tulsa (OK)Tyler (TX)Vancouver (WA)Virginia Beach (VA)WashingtonWinston-Salem (NC)
Yosemite Valley (CA)
More Locations
United States weather

Weather in Yosemite Valley, California for September 2026

Your guide to Yosemite Valley weather in September - trends and predictions

    Temperatures

  • Until now, September 2026 in Yosemite Valley is slightly cooler than the historical average by 0.6 °F.

  • The forecast for the upcoming days in Yosemite Valley predicts a temperature of 19.3 °F, which is slightly above the historical average.

  • In general, the average temperature in Yosemite Valley at the beginning of September is 21 °F. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 18.3 °F by the end of September.

    • Rain 🌧️

  • With an average of 5 rainy days, Yosemite Valley experiences minimal rainfall in September.

    • More

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

Average dry days
25
Dry days
Average rainy days
5
Rainy days
Average snowy days
0
Snow days
Average temperatures
18°/12°
Temperatures
Average wind speed
16 km/h
Avg max wind
Average humidity
45 %
Avg humidity

Yosemite Valley Weather September

Move between months or click on a day
August
October
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1
Sunny
22°
2
Sunny
20°
3
Sunny
20°
4
Sunny
21°
5
Sunny
22°
6
Sunny
21°
7
Sunny
21°
8
Sunny
21°
9
Sunny
20°
10
Cloudy
18°
11
Sunny
17°
12
Sunny
18°
13
Sunny
19°
14
Partly cloudy
20°
15
Sunny
19°
16
Moderate or heavy snow showers
15°
17
Partly cloudy
15°
18
Thundery outbreaks possible
14°
19
Torrential rain shower
14°
20
Sunny
17°
21
Smoke
17°
22
Smoke
19°
23
Smoke
20°
24
Smoke
19°
25
Smoke
17°
26
Overcast
19°
27
Sunny
15°
28
Sunny
18°
29
Sunny
19°
30
Sunny
21°

Temperatures trend during September in Yosemite Valley

See the weather trend as well as the moving average line

September weather in Yosemite Valley day by day

Click on a date for more information
August October
Date Weather Temperatures Rain Snow More
Sept. 1 Sunny
Sunny
 22° /11° 0 mm 0 cm
Sept. 2 Sunny
Sunny
 20° /10° 0 mm 0 cm
Sept. 3 Sunny
Sunny
 20° /10° 0 mm 0 cm
Sept. 4 Sunny
Sunny
 21° /10° 0 mm 0 cm
Sept. 5 Sunny
Sunny
 22° /11° 0 mm 0 cm
Sept. 6 Sunny
Sunny
 21° /11° 0 mm 0 cm
Sept. 7 Sunny
Sunny
 21° /10° 0 mm 0 cm
Sept. 8 Sunny
Sunny
 21° /10° 0 mm 0 cm
Sept. 9 Sunny
Sunny
 20° /9° 0 mm 0 cm
Sept. 10 Cloudy
Cloudy
 18° /9° 0 mm 0 cm
Sept. 11 Sunny
Sunny
 17° /7° 0 mm 0 cm
Sept. 12 Sunny
Sunny
 18° /7° 1.1 mm 0 cm
Sept. 13 Sunny
Sunny
 19° /8° 0 mm 0 cm
Sept. 14 Partly cloudy
Partly cloudy
 20° /7° 0 mm 0 cm
Sept. 15 Sunny
Sunny
 19° /8° 0 mm 0 cm
Sept. 16 Moderate or heavy snow showers
Moderate or heavy snow showers
 15° /6° 0.6 mm 0.1 cm
Sept. 17 Partly cloudy
Partly cloudy
 15° /5° 0 mm 0 cm
Sept. 18 Thundery outbreaks possible
Thundery outbreaks possible
 14° /6° 0 mm 0 cm
Sept. 19 Torrential rain shower
Torrential rain shower
 14° /6° 16.6 mm 0 cm
Sept. 20 Sunny
Sunny
 17° /7° 0 mm 0 cm
Sept. 21 Smoke
Smoke
 17° /6° 7.7 mm 0 cm
Sept. 22 Smoke
Smoke
 19° /5° 0 mm 0 cm
Sept. 23 Smoke
Smoke
 20° /8° 0 mm 0 cm
Sept. 24 Smoke
Smoke
 19° /8° 0 mm 0 cm
Sept. 25 Smoke
Smoke
 17° /7° 0 mm 0 cm
Sept. 26 Overcast
Overcast
 19° /6° 0 mm 0 cm
Sept. 27 Sunny
Sunny
 15° /4° 0 mm 0 cm
Sept. 28 Sunny
Sunny
 18° /3° 0 mm 0 cm
Sept. 29 Sunny
Sunny
 19° /6° 0 mm 0 cm
Sept. 30 Sunny
Sunny
 21° /7° 0 mm 0 cm
Next
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.
Change Month
‹
›

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 18° and cooler nights around 12°. 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 33.5 mm across approximately 5 days. Occasional showers are possible, and planning ahead for them could be helpful.

Will it snow in Yosemite Valley in September 2026?
Yosemite Valley typically sees 0.1 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 16 km/h, suggesting breezy to windy conditions, depending on your activities.

Yosemite Valley snow forecast September 2026

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 💧
Typically, Yosemite Valley has 5 rainy days in September with a total of 33.5 mm of rainfall.

UV exposure in Yosemite Valley during September

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

Quick links

More Yosemite Valley weather pages
You are here
Location coordinates 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.

Found a mistake?
We appreciate your attention to details. Tell us here.