Placer County (Lake Tahoe)
September
Weather in Placer County, California for September 2026
Your guide to Placer County weather in September - trends and predictions
Until now, September 2026 in Placer County is slightly cooler than the historical average by 1.9 °F.
The forecast for the next days in Placer County predicts temperatures to be around 23 °F, close to the historical average.
In general, the average temperature in Placer County at the beginning of September is 21.4 °F. As the month progressed, temperatures tended to moderately rise, reaching an average of 22.3 °F by the end of September.
With an average of 4 rainy days, Placer County experiences minimal rainfall in September.
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Temperatures
Rain 🌧️
More
26
Dry days
4
Rainy days
0
Snow days
21°/9°
Temperatures
17 km/h
Avg max wind
47 %
Avg humidity
Placer County Weather September
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Temperatures trend during September in Placer County
See the weather trend as well as the moving average line
September weather in Placer County day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Sunny | 23° /8° | 0 mm | 6 | |
| Sept. 2 | Sunny | 20° /8° | 0 mm | 5 | |
| Sept. 3 | Sunny | 21° /7° | 0.5 mm | 6 | |
| Sept. 4 | Sunny | 20° /9° | 0.8 mm | 5 | |
| Sept. 5 | Sunny | 23° /9° | 0 mm | 8 | |
| Sept. 6 | Sunny | 22° /8° | 0.1 mm | 7 | |
| Sept. 7 |  Overcast | 21° /7° | 0 mm | 7 | |
| Sept. 8 | Sunny | 23° /7° | 0 mm | 7 | |
| Sept. 9 | Sunny | 21° /8° | 0 mm | 4 | |
| Sept. 10 | Overcast | 20° /8° | 0.3 mm | 4 | |
| Sept. 11 | Sunny | 19° /5° | 0 mm | 6 | |
| Sept. 12 | Sunny | 20° /5° | 1.1 mm | 6 | |
| Sept. 13 | Sunny | 19° /6° | 0 mm | 7 | |
| Sept. 14 | Sunny | 22° /6° | 0 mm | 7 | |
| Sept. 15 | Sunny | 20° /6° | 0 mm | 7 | |
| Sept. 16 | Sunny | 18° /6° | 0.3 mm | 6 | |
| Sept. 17 |  Light sleet | 16° /6° | 2.4 mm | 5 | |
| Sept. 18 |  Moderate or heavy rain with thunder | 17° /6° | 14.4 mm | 5 | |
| Sept. 19 |  Patchy light rain with thunder | 17° /7° | 10.9 mm | 5 | |
| Sept. 20 | Overcast | 23° /7° | 0 mm | 6.4 | |
| Sept. 21 | Overcast | 24° /8° | 0 mm | 6.8 | |
| Sept. 22 | Sunny | 25° /7° | 0 mm | 6.5 | |
| Sept. 23 | Sunny | 24° /9° | 0 mm | 6.8 | |
| Sept. 24 | Overcast | 23° /9° | 0 mm | 5 | |
| Sept. 25 | Sunny | 22° /6° | 0 mm | 5 | |
| Sept. 26 | Sunny | 20° /6° | 0 mm | 5 | |
| Sept. 27 | Sunny | 22° /5° | 0 mm | 6 | |
| Sept. 28 | Sunny | 25° /6° | 0 mm | 7 | |
| Sept. 29 | Sunny | 23° /8° | 0 mm | 6 | |
| Sept. 30 | Sunny | 21° /8° | 0 mm | 5 | |
| Next | |||||
Important Notice
Our weather forecast for Placer County 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 Placer County forecast closer to your planned date for the most up-to-date weather information.
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Placer County in September - FAQ
What are the expected maximum and minimum temperatures in Placer County during September?
Enjoy moderate daytime temperatures of up to 21° and cooler nights around 9°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Placer County during September?
In September, Placer County can expect light to moderate rainfall, totaling 43.7 mm across approximately 4 days. Occasional showers are possible, and planning ahead for them could be helpful.
What are the typical wind conditions in Placer County during September?
The average wind speed in Placer County during September is 17 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Placer County
Explore the daily rainfall trends and prepare for Placer Countys September weather 💧
Typically, Placer County has 4 rainy days in September with a total of 43.7 mm of rainfall.
UV exposure in Placer County during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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Where is Placer County?Get accurate weather forecasts for Placer County, located at latitude 39.145 and longitude -120.096. Stay updated with localized weather information tailored for Placer County.
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