Sacramento County (Sacramento)
September
Weather in Sacramento County, California for September 2025
Your guide to Sacramento County weather in September - trends and predictions
Until now, September 2025 in Sacramento County is slightly cooler than the historical average by -1.9 °F.
The forecast for the next days in Sacramento County predicts temperatures to be around 34 °F, close to the historical average.
In general, the average temperature in Sacramento County at the beginning of September is 34.6 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 31.4 °F by the end of September.
Precipitation in Sacramento County during September is a rare event, with an average of fewer than 2 rainy days.
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Temperatures
Rain 🌧️
More
30
Dry days
0
Rainy days
0
Snow days
32°/14°
Temperatures
18 km/h
Avg max wind
50 %
Avg humidity
Sacramento County Weather September
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Temperatures trend during September in Sacramento County
See the weather trend as well as the moving average line
September weather in Sacramento County day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Sunny | 34° /15° | 0 mm | 8 | |
| Sept. 2 | Sunny | 32° /14° | 0 mm | 8 | |
| Sept. 3 |  Thundery outbreaks possible | 35° /15° | 0 mm | 8 | |
| Sept. 4 |  Partly cloudy | 37° /16° | 0 mm | 9 | |
| Sept. 5 |  Cloudy | 36° /16° | 0 mm | 8 | |
| Sept. 6 | Sunny | 35° /16° | 0 mm | 8 | |
| Sept. 7 | Partly cloudy | 33° /15° | 0 mm | 8 | |
| Sept. 8 | Sunny | 33° /14° | 0 mm | 8 | |
| Sept. 9 | Partly cloudy | 32° /16° | 0 mm | 8 | |
| Sept. 10 |  Overcast | 31° /14° | 0 mm | 7 | |
| Sept. 11 | Sunny | 32° /14° | 0 mm | 8 | |
| Sept. 12 | Overcast | 33° /14° | 0 mm | 7 | |
| Sept. 13 |  Mist | 33° /14° | 0 mm | 8 | |
| Sept. 14 | Partly cloudy | 34° /14° | 0 mm | 8 | |
| Sept. 15 | Sunny | 38° /16° | 0 mm | 1.7 | |
| Sept. 16 | Sunny | 40° /18° | 0 mm | 1.7 | |
| Sept. 17 | Sunny | 40° /18° | 0 mm | 1.6 | |
| Sept. 18 | Partly cloudy | 31° /21° | 0 mm | 0.9 | |
| Sept. 19 |  Patchy rain possible | 27° /20° | 0.6 mm | 0 | |
| Sept. 20 | Partly cloudy | 32° /21° | 0 mm | 6 | |
| Sept. 21 | Sunny | 35° /19° | 0 mm | 7 | |
| Sept. 22 | Sunny | 37° /20° | 0 mm | 7 | |
| Sept. 23 | Sunny | 35° /22° | 0 mm | 7 | |
| Sept. 24 | Sunny | 33° /19° | 0 mm | 7 | |
| Sept. 25 | Sunny | 30° /17° | 0 mm | 6 | |
| Sept. 26 | Sunny | 32° /16° | 0 mm | 6 | |
| Sept. 27 | Sunny | 33° /16° | 0 mm | 6 | |
| Sept. 28 | Sunny | 30° /16° | 0 mm | 6 | |
| Sept. 29 | Overcast | 33° /12° | 0 mm | 8 | |
| Sept. 30 | Light rain shower | 29° /14° | 0.5 mm | 7 | |
| Next | |||||
Important Notice
Our weather forecast for Sacramento 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 Sacramento County forecast closer to your planned date for the most up-to-date weather information.
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Sacramento County in September - FAQ
What are the expected maximum and minimum temperatures in Sacramento County during September?
Expect warm days with temperatures around 32°, cooling to mild conditions of 14° after sunset. Perfect for those who enjoy warm weather.
How much rainfall should be expected in Sacramento County during September?
Rainfall in Sacramento County during September is rare to nonexistent, with the total expected rainfall being less than 10 mm and approximately 0 days seeing any precipitation. Planning without the concern for rain is generally straightforward during this very dry period.
What are the typical wind conditions in Sacramento County during September?
The average wind speed in Sacramento County during September is 18 km/h, suggesting breezy to windy conditions, depending on your activities.
UV exposure in Sacramento County during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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