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Hourly Forecast
Daylight Hours
06:52
Sunrise
19:04
Sunset
Moon
Waxing Crescent
12:47
Moonrise
21:18
Moonset
Daily Forecast
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Air Quality Data Available
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UV Index
Humidity
Weather in Grass Valley today, September 16, 2026
Expect a mostly clear day in Grass Valley on September 16, 2026, with sunshine dominating from morning through evening. Cloud should stay limited, so the overall feel remains bright and settled. The opening hours look fair, as cloud stays near 0% around 08:00. Morning errands should face fewer weather interruptions.
The temperature range runs from about 14°C up to 23°C. Expect humidity between 34% and 71%, most humid near 23:00. Airflow remains manageable, reaching about 6.5 km/h around 10:00.
Expect a more open afternoon, with limited cloud around 0% by 12:00. Residual damp risk should be lower than earlier. Horizontal visibility holds close to 16.1 km. Daylight runs from 06:52 to 19:04, lasting 12 hours 11 minutes of sunlight today.
In short, September 16, 2026 looks like a fine day in Grass Valley for being outside, peaking around 23°C.
Frequently asked questions about weather in Grass Valley
How warm does it get in Grass Valley?
The warmest month in Grass Valley is July, with average high temperatures of 34°C. The average temperature during this period is around 26°C.
How cold does it get in Grass Valley?
The coldest month in Grass Valley is February, with average low temperatures of 3°C. The average temperature during this period is around 8°C.
What is the wettest time of year in Grass Valley?
The wettest month in Grass Valley is March, with an average of 294mm of precipitation.
What is the driest time of year in Grass Valley?
The driest month in Grass Valley is July, with an average of 0mm of precipitation.
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