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Grass Valley, CA Weather Forecast

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Grass Valley, CA Weather Forecast

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Grass Valley CA weather - Clear - 69°F
Clear
69°F
Updated 4:40 am
Feels Like 58°F
Humidity 26%
Wind VRB 5 mph
Barometer  30.08 in
Dew Point 33°F
Grass Valley CA weather - Clear - 21°C
Clear
21°C
Updated 4:40 am
Feels Like 15°C
Humidity 26%
Wind VRB 8 km/h
Barometer  101.8 kPa
Dew Point 1°C
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Grass Valley Weather Forecast

TODAY TONIGHT SUNDAY SUNDAY NIGHT MONDAY MONDAY NIGHT TUESDAY TUESDAY NIGHT WEDNESDAY WEDNESDAY NIGHT THURSDAY FRIDAY
Grass Valley, CA Weather - Today Sunny Grass Valley, CA Weather - Tonight Partly Cloudy Grass Valley, CA Weather - Sunday Mostly Cloudy Grass Valley, CA Weather - Sunday Night Mostly Cloudy Grass Valley, CA Weather - Monday Mostly Sunny Grass Valley, CA Weather - Monday Night Mostly Clear Grass Valley, CA Weather - Tuesday Sunny Grass Valley, CA Weather - Tuesday Night Clear Grass Valley, CA Weather - Wednesday Clear Grass Valley, CA Weather - Wednesday Night Mostly Clear Grass Valley, CA Weather - Thursday Mostly Clear Grass Valley, CA Weather - Friday Mostly Clear
Sunny Partly Cloudy Mostly Cloudy Mostly Cloudy Mostly Sunny Mostly Clear Sunny Clear Clear Mostly Clear Mostly Clear Mostly Clear
Hi: 86°FHi: 30°C
 Lo: 60°FLo: 16°C Hi: 84°FHi: 29°C
 Lo: 61°FLo: 16°C Hi: 84°FHi: 29°C
 Lo: 59°FLo: 15°C Hi: 85°FHi: 29°C
 Hi: 87°FHi: 31°C
Lo: 60°FLo: 16°C		 Hi: 87°FHi: 31°C
Lo: 60°FLo: 16°C		 Hi: 89°FHi: 32°C
Lo: 62°FLo: 17°C		 Hi: 89°FHi: 32°C
Lo: 62°FLo: 17°C		 Hi: 89°FHi: 32°C
Lo: 62°FLo: 17°C
POP = Probability of Precipitation.
Weather Outlook Updated: 201 AM PDT Sat Sep 19 2026 Grass Valley, CA Weather - WeatherWorld.com

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Grass Valley Forecast Discussion

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Issued: 1234 PM PDT Fri Sep 18 2026

Key Messages

  • Seasonable temperatures and dry conditions persist over the weekend with generally offshore winds.
  • Isolated mountain thunderstorm chances (up to 10%) along the Sierra from Highway 50 southward on Monday.
  • Dry weather remainder of next week with gradual warming trend through the middle of the week.

Discussion

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Today-Weekend: Upper level troughing is beginning to eject eastward as of early this afternoon and is expected to exit the region by Saturday. In its wake, a brief period of weak...