Vacaville (CA)
August
Weather in Vacaville, California for August 2026
Your guide to Vacaville weather in August - trends and predictions
In general, the average temperature in Vacaville at the beginning of August is 33.3 °F. As the month progressed, temperatures tended to moderately rise, reaching an average of 35.1 °F by the end of August.
Precipitation in Vacaville during August is a rare event, with an average of fewer than 2 rainy days.
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Temperatures
Rain 🌧️
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31
Dry days
0
Rainy days
0
Snow days
35°/13°
Temperatures
20 km/h
Avg max wind
59 %
Avg humidity
Vacaville Weather August
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Temperatures trend during August in Vacaville
See the weather trend as well as the moving average line
August weather in Vacaville day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Aug. 1 |  Mist | 33° /13° | 0 mm | 7 | |
| Aug. 2 | Mist | 35° /12° | 0 mm | 8 | |
| Aug. 3 | Mist | 33° /12° | 0 mm | 7 | |
| Aug. 4 | Mist | 32° /11° | 0 mm | 7 | |
| Aug. 5 | Mist | 31° /10° | 0 mm | 7 | |
| Aug. 6 | Mist | 34° /11° | 0 mm | 7 | |
| Aug. 7 | Mist | 35° /13° | 0 mm | 8 | |
| Aug. 8 |  Sunny | 39° /13° | 0 mm | 9 | |
| Aug. 9 | Sunny | 38° /15° | 0 mm | 9 | |
| Aug. 10 |  Partly cloudy | 39° /14° | 0 mm | 9 | |
| Aug. 11 | Sunny | 37° /13° | 0 mm | 9 | |
| Aug. 12 | Mist | 35° /12° | 0 mm | 8 | |
| Aug. 13 |  Overcast | 28° /11° | 0 mm | 6 | |
| Aug. 14 | Mist | 35° /14° | 0 mm | 8 | |
| Aug. 15 | Sunny | 36° /14° | 0 mm | 9 | |
| Aug. 16 | Sunny | 34° /16° | 0 mm | 8 | |
| Aug. 17 | Mist | 30° /14° | 0 mm | 7 | |
| Aug. 18 | Mist | 30° /12° | 0 mm | 7 | |
| Aug. 19 | Mist | 28° /10° | 0 mm | 6 | |
| Aug. 20 | Partly cloudy | 39° /12° | 0 mm | 9 | |
| Aug. 21 | Partly cloudy | 40° /17° | 0 mm | 10 | |
| Aug. 22 | Mist | 38° /13° | 0 mm | 8 | |
| Aug. 23 |  Cloudy | 37° /16° | 0 mm | 8 | |
| Aug. 24 | Partly cloudy | 34° /13° | 0 mm | 8 | |
| Aug. 25 | Mist | 38° /12° | 0 mm | 8 | |
| Aug. 26 |  Thundery outbreaks possible | 33° /14° | 0 mm | 7 | |
| Aug. 27 | Overcast | 32° /12° | 0 mm | 7 | |
| Aug. 28 | Mist | 33° /11° | 0 mm | 7 | |
| Aug. 29 | Mist | 33° /11° | 0 mm | 7 | |
| Aug. 30 | Sunny | 40° /14° | 0 mm | 10 | |
| Aug. 31 | Sunny | 37° /13° | 0 mm | 9 | |
| Next | |||||
Important Notice
Our weather forecast for Vacaville in August 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 August - FAQ
What are the expected maximum and minimum temperatures in Vacaville during August?
Expect warm days with temperatures around 35°, cooling to mild conditions of 13° after sunset. Perfect for those who enjoy warm weather.
How much rainfall should be expected in Vacaville during August?
Rainfall in Vacaville during August 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 Vacaville during August?
The average wind speed in Vacaville during August is 20 km/h, suggesting breezy to windy conditions, depending on your activities.
UV exposure in Vacaville during August
Stay informed about UV levels for safe outdoor activities throughout the month of August ☀️
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