Weather forecast for 10 daysGrass Valley, OR

Weather forecast for the weekend

Sunday Oct 18, 2026

  • 61°F
  • 39°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 6%
  • Precipitation: 0"
  • Wind: 11mphENE 58°
  • Humidity: 52%
  • UV index: 3
  • Sunrise: 7:23 am PDT
  • Sunset: 6:12 pm PDT
  • ▼
Tomorrow, in Grass Valley, mostly sunny weather is likely, with high visibility.
The highest temperature will be a breezy 60.8°F, while the lowest anticipated temperature is an icy 39.2°F.
The anticipated peak temperature will reflect the average October high of 58.8°F.
Sunrise will be at 7:23 am and sunset at 6:12 pm; tomorrow's daylight will last for 10h and 49min.

10-day overview

Daily temperatures

Warmest day: Wednesday 66°C.
Coldest period: Sunday - Monday 52°C.

Chance of precipitation

Highest chance: Sunday 25.10. 22%.

Long-term weather forecast

  • Saturday
  • Oct 17, 2026
  • min.
  • 32°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 6%
  • Precipitation: 0"
  • Wind: 8mphW 277°
  • Humidity: 73%
  • UV index: 0
  • Sunrise: 7:22 am PDT
  • Sunset: 6:14 pm PDT
  • ▼
  • Sunday
  • Oct 18, 2026
  • 61°F
  • 39°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 6%
  • Precipitation: 0"
  • Wind: 11mphENE 58°
  • Humidity: 52%
  • UV index: 3
  • Sunrise: 7:23 am PDT
  • Sunset: 6:12 pm PDT
  • ▼
  • Monday
  • Oct 19, 2026
  • 59°F
  • 36°F
Cloudy
Cloudy
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 6mphNW 323°
  • Humidity: 49%
  • UV index: 1
  • Sunrise: 7:25 am PDT
  • Sunset: 6:11 pm PDT
  • ▼
  • Tuesday
  • Oct 20, 2026
  • 63°F
  • 34°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 3%
  • Precipitation: 0"
  • Wind: 11mphNE 50°
  • Humidity: 47%
  • UV index: 3
  • Sunrise: 7:26 am PDT
  • Sunset: 6:09 pm PDT
  • ▼
  • Wednesday
  • Oct 21, 2026
  • 66°F
  • 37°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 3%
  • Precipitation: 0"
  • Wind: 6mphNNW 339°
  • Humidity: 46%
  • UV index: 3
  • Sunrise: 7:27 am PDT
  • Sunset: 6:07 pm PDT
  • ▼
  • Thursday
  • Oct 22, 2026
  • 61°F
  • 36°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 14%
  • Precipitation: 0"
  • Wind: 12mphWNW 282°
  • Humidity: 52%
  • UV index: 3
  • Sunrise: 7:29 am PDT
  • Sunset: 6:06 pm PDT
  • ▼
  • Friday
  • Oct 23, 2026
  • 54°F
  • 30°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 4%
  • Precipitation: 0"
  • Wind: 12mphWNW 282°
  • Humidity: 54%
  • UV index: 3
  • Sunrise: 7:30 am PDT
  • Sunset: 6:04 pm PDT
  • ▼
  • Saturday
  • Oct 24, 2026
  • 54°F
  • 32°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 12%
  • Precipitation: 0"
  • Wind: 9mphNNW 345°
  • Humidity: 54%
  • UV index: 3
  • Sunrise: 7:31 am PDT
  • Sunset: 6:02 pm PDT
  • ▼
  • Sunday
  • Oct 25, 2026
  • 52°F
  • 32°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 22%
  • Precipitation: 0"
  • Wind: 8mphN 6°
  • Humidity: 58%
  • UV index: 3
  • Sunrise: 7:33 am PDT
  • Sunset: 6:01 pm PDT
  • ▼
  • Monday
  • Oct 26, 2026
  • 52°F
  • 30°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 16%
  • Precipitation: 0"
  • Wind: 6mphNW 310°
  • Humidity: 59%
  • UV index: 3
  • Sunrise: 7:34 am PDT
  • Sunset: 5:59 pm PDT
  • ▼
Across the following ten days, primarily cloud-filled and occasionally sun-filled weather is expected.
Rain is not anticipated in Grass Valley in the upcoming days.
Temperature fluctuation will be noticeable over the next several days. Maximum temperatures are forecasted between 51.8°F and 66.2°F, while the minimum temperature is forecast to range between 30.2°F and 39.2°F.
Expect the warmest day on Wednesday, with temperatures peaking at 66.2°F; with a maximum temperature of 51.8°F, next Sunday and Monday will be the coldest days in Grass Valley.
Updated: Oct 18, 2026 @ 01:13:40 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

On Sunday, bright conditions and mild breezes are expected.

Tomorrow, the maximum temperature will be 60.8°F, while the minimum temperature will be 39.2°F.
The highest temperature will be in line with the average maximum of 58.8°F in October. The lowest temperature tomorrow will be slightly cooler than the average low temperature.

On Sunday, in Grass Valley, sunrise will be at 7:23 am and sunset at 6:12 pm (PDT).

In Grass Valley, tomorrow, there will be 10h and 49min of daylight.