Grass Valley (CA)
August
Weather in Grass Valley, California for August 2026
Your guide to Grass Valley weather in August - trends and predictions
In general, the average temperature in Grass Valley at the beginning of August is 33.1 °F. As the month progressed, temperatures tended to moderately rise, reaching an average of 35.1 °F by the end of August.
Precipitation in Grass Valley 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°/21°
Temperatures
14 km/h
Avg max wind
30 %
Avg humidity
Grass Valley Weather August
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Temperatures trend during August in Grass Valley
See the weather trend as well as the moving average line
August weather in Grass Valley day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Aug. 1 |  Sunny | 34° /20° | 0 mm | 8 | |
| Aug. 2 | Sunny | 34° /20° | 0 mm | 8 | |
| Aug. 3 | Sunny | 33° /21° | 0 mm | 8 | |
| Aug. 4 | Sunny | 32° /17° | 0 mm | 8 | |
| Aug. 5 | Sunny | 31° /17° | 0 mm | 8 | |
| Aug. 6 | Sunny | 33° /20° | 0 mm | 8 | |
| Aug. 7 |  Partly cloudy | 35° /22° | 0 mm | 9 | |
| Aug. 8 | Sunny | 37° /22° | 0 mm | 9 | |
| Aug. 9 | Partly cloudy | 38° /24° | 0 mm | 9 | |
| Aug. 10 | Partly cloudy | 39° /26° | 0 mm | 9 | |
| Aug. 11 | Sunny | 39° /25° | 0 mm | 9 | |
| Aug. 12 | Sunny | 37° /24° | 0 mm | 9 | |
| Aug. 13 | Partly cloudy | 31° /23° | 0 mm | 8 | |
| Aug. 14 | Sunny | 33° /18° | 0 mm | 8 | |
| Aug. 15 | Sunny | 34° /21° | 0 mm | 8 | |
| Aug. 16 | Sunny | 30° /20° | 0 mm | 8 | |
| Aug. 17 | Partly cloudy | 29° /19° | 0 mm | 7 | |
| Aug. 18 | Sunny | 29° /16° | 0 mm | 7 | |
| Aug. 19 | Sunny | 30° /17° | 0 mm | 8 | |
| Aug. 20 | Sunny | 36° /19° | 0 mm | 9 | |
| Aug. 21 | Sunny | 38° /23° | 0 mm | 9 | |
| Aug. 22 | Partly cloudy | 39° /25° | 0 mm | 9 | |
| Aug. 23 | Partly cloudy | 40° /25° | 0 mm | 10 | |
| Aug. 24 | Partly cloudy | 37° /25° | 0 mm | 9 | |
| Aug. 25 |  Cloudy | 38° /25° | 0 mm | 8 | |
| Aug. 26 | Cloudy | 33° /23° | 0 mm | 7 | |
| Aug. 27 | Sunny | 33° /20° | 0 mm | 8 | |
| Aug. 28 | Sunny | 33° /20° | 0 mm | 8 | |
| Aug. 29 | Sunny | 35° /21° | 0 mm | 9 | |
| Aug. 30 | Sunny | 37° /22° | 0 mm | 9 | |
| Aug. 31 | Sunny | 37° /23° | 0 mm | 9 | |
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Important Notice
Our weather forecast for Grass Valley 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 Grass Valley forecast closer to your planned date for the most up-to-date weather information.
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Grass Valley in August - FAQ
What are the expected maximum and minimum temperatures in Grass Valley during August?
With daytime temperatures soaring above 35° and not dropping much below 21° at night, August in Grass Valley is quite hot. Staying hydrated and avoiding peak sun hours is advisable.
How much rainfall should be expected in Grass Valley during August?
Rainfall in Grass Valley 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 Grass Valley during August?
The average wind speed in Grass Valley during August is 14 km/h, suggesting breezy to windy conditions, depending on your activities.
UV exposure in Grass Valley during August
Stay informed about UV levels for safe outdoor activities throughout the month of August ☀️
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