Vacaville (CA)
September
Weather in Vacaville, California for September 2027
Your guide to Vacaville weather in September - trends and predictions
Precipitation in Vacaville during September is a rare event, with an average of fewer than 2 rainy days.
Is September a good time to visit Vacaville? check out the best time to travel to Vacaville page.
✨ Is September a good time to visit Vacaville? – Ask the AI Weatherman
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29
Dry days
1
Rainy days
0
Snow days
30°/14°
Temperatures
16 km/h
Avg max wind
55 %
Avg humidity
Vacaville Weather September
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Temperatures trend during September in Vacaville
See the weather trend as well as the moving average line
September weather in Vacaville day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Sunny | 32° /13° | 0 mm | 8.7 | |
| Sept. 2 |  Cloudy | 30° /14° | 0 mm | 8 | |
| Sept. 3 |  Mist | 30° /14° | 0 mm | 7 | |
| Sept. 4 | Mist | 31° /13° | 0 mm | 8 | |
| Sept. 5 | Mist | 29° /12° | 0 mm | 8 | |
| Sept. 6 | Mist | 29° /14° | 0 mm | 7 | |
| Sept. 7 | Mist | 32° /12° | 0 mm | 7 | |
| Sept. 8 |  Overcast | 32° /12° | 0 mm | 7 | |
| Sept. 9 | Overcast | 31° /19° | 0 mm | 3 | |
| Sept. 10 | Mist | 32° /18° | 0 mm | 6 | |
| Sept. 11 | Overcast | 30° /15° | 0 mm | 7 | |
| Sept. 12 | Mist | 31° /14° | 0 mm | 7.7 | |
| Sept. 13 | Mist | 28° /12° | 0 mm | 7 | |
| Sept. 14 | Mist | 33° /14° | 0 mm | 7 | |
| Sept. 15 | Sunny | 34° /15° | 0 mm | 7.5 | |
| Sept. 16 | Sunny | 32° /15° | 0 mm | 7.4 | |
| Sept. 17 | Sunny | 32° /13° | 0 mm | 7.3 | |
| Sept. 18 |  Moderate rain at times | 29° /15° | 5.8 mm | 7 | |
| Sept. 19 | Overcast | 31° /15° | 0 mm | 7 | |
| Sept. 20 | Mist | 30° /14° | 0 mm | 4 | |
| Sept. 21 | Mist | 31° /13° | 0 mm | 6.9 | |
| Sept. 22 | Sunny | 32° /14° | 0 mm | 6.8 | |
| Sept. 23 | Sunny | 37° /17° | 0 mm | 6.7 | |
| Sept. 24 | Cloudy | 31° /16° | 0 mm | 5 | |
| Sept. 25 | Overcast | 28° /15° | 0 mm | 6 | |
| Sept. 26 | Mist | 32° /12° | 0 mm | 5 | |
| Sept. 27 |  Partly cloudy | 28° /13° | 0 mm | 6 | |
| Sept. 28 | Overcast | 24° /13° | 0 mm | 5 | |
| Sept. 29 | Overcast | 30° /16° | 0 mm | 5 | |
| Sept. 30 | Overcast | 28° /17° | 0 mm | 5 | |
| Next | |||||
Important Notice
Our weather forecast for Vacaville 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 Vacaville forecast closer to your planned date for the most up-to-date weather information.
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Vacaville in September - FAQ
What are the expected maximum and minimum temperatures in Vacaville during September?
Expect warm days with temperatures around 30°, cooling to mild conditions of 14° after sunset. Perfect for those who enjoy warm weather.
How much rainfall should be expected in Vacaville during September?
Rainfall in Vacaville during September is rare to nonexistent, with the total expected rainfall being less than 10 mm and approximately 1 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 Vacaville during September?
The average wind speed in Vacaville during September is 16 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Vacaville
Explore the daily rainfall trends and prepare for Vacavilles September weather 💧
Typically, Vacaville has 1 rainy days in September with a total of 5.8 mm of rainfall.
UV exposure in Vacaville during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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Where is Vacaville?Get accurate weather forecasts for Vacaville, located at latitude 38.357 and longitude -121.988. Stay updated with localized weather information tailored for Vacaville.
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