What is today's weather forecast for Grass Valley, OR?

Today's forecast for Grass Valley shows a low of 40 degrees Fahrenheit. A 40 percent chance of rain.

What is the 7-day weather forecast for Grass Valley, OR?

The 7-day forecast for Grass Valley shows highs from 40 to 50 degrees and lows from 29 to 40 degrees Fahrenheit. Expect precipitation on 8 days with chances of 20% or higher.

Will it rain in Grass Valley, OR this week?

Yes, rain is possible in Grass Valley this week. Precipitation chances: Tuesday (40% chance), Wednesday (60% chance), Thursday (100% chance), Friday (80% chance), Saturday (30% chance), Sunday (50% chance), Monday (50% chance), Tuesday (50% chance).

How accurate is the Grass Valley weather forecast?

WeatherForYou provides highly accurate Grass Valley forecasts using National Weather Service data and current conditions from the nearest available weather stations, often miles closer than regional airports, for the most precise local forecasts.

Grass Valley, OR Weather Forecast and Current Conditions

WEATHER ALERTS - High Wind Warning

Current Conditions From Nearby Local Station

Switch to Metric Units

44°F
Feels Like 35°F

Humidity 78% Dew Point 38°F Wind W 26 MPH Gusts 38 Barometer 29.53 in.

Report from a MADIS/MESONET weather station 1.7 mi. S of central Grass Valley
at 3:43 AM Wed, Dec 17, 2025

Point Forecast at a Glance

TueDec 16

40%

WedDec 17

30%

ThuDec 18

100%

FriDec 19

80%

SatDec 20

30%

SunDec 21

50%

MonDec 22

50%

Jump to detailed forecast ↓

7-Day Temperature Trend

Week Ahead Summary

High temperatures remain relatively stable through the week, ranging from 41°F to 50°F. Unsettled weather expected with wintry mix likely on at least 7 days.

Climate Context

This week's forecast shows temperatures running 3°F above the historical average for December. Normal highs for this period are around 40°F with lows around 27°F.

This Date in Weather History

1884 - A three week blockade of snow began at Portland, OR. A record December total of 34 inches was received.

Grass Valley, OR 7 Day Weather Forecast Details

Tuesday Dec 16

Night: A 40 percent chance of rain. Snow level 3100 feet. Mostly cloudy, with a steady temperature around 40. Breezy, with a west wind around 28 mph, with gusts as high as 50 mph.

Wednesday Dec 17

Day: A chance of rain, possibly mixing with snow after 7am, then gradually ending. Snow level 2600 feet. Mostly sunny, with a high near 43. Breezy, with a southwest wind 24 to 26 mph, with gusts as high as 44 mph. Chance of precipitation is 30%.

Night: A slight chance of rain and snow before 1am, then a chance of snow between 1am and 4am, then rain and snow likely after 4am. Snow level 2400 feet. Cloudy, with a steady temperature around 36. South wind 6 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

Thursday Dec 18

Day: Rain and snow, becoming all rain after 10am. High near 50. Southwest wind 6 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 100%. New snow accumulation of less than a half inch possible.

Night: Rain. Low around 36. Breezy, with a southwest wind 16 to 22 mph, with gusts as high as 38 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.

Friday Dec 19

Day: Rain and snow. Snow level 2900 feet. High near 42. Chance of precipitation is 80%. Little or no snow accumulation expected.

Night: A chance of rain and snow before 10pm, then a chance of snow. Partly cloudy, with a low around 30. Chance of precipitation is 50%. Little or no snow accumulation expected.

Saturday Dec 20

Day: A chance of snow before 10am, then a chance of rain and snow between 10am and 4pm, then a chance of rain after 4pm. Snow level rising to 2800 feet in the afternoon. Mostly sunny, with a high near 43. Chance of precipitation is 30%.

Night: A chance of rain before 7pm, then a chance of rain and snow. Snow level 2800 feet. Mostly cloudy, with a low around 30. Chance of precipitation is 30%.

Sunday Dec 21

Day: Rain likely, possibly mixed with snow before 1pm, then rain. Snow level 3000 feet rising to 4400 feet in the afternoon. Partly sunny, with a high near 41.

Night: Rain. Mostly cloudy, with a low around 32.

Monday Dec 22

Day: A chance of rain and snow. Snow level 3300 feet. Mostly sunny, with a high near 43.

Night: A chance of rain and snow. Snow level 2900 feet. Partly cloudy, with a low around 29.

Tuesday Dec 23

Day: A slight chance of rain and snow. Snow level 2600 feet. Partly sunny, with a high near 40.

About Grass Valley, OR

Grass Valley is a city in Sherman County, Oregon, United States. The population was 164 at the 2010 census.

Content from Wikipedia, licensed under CC BY-SA 3.0.

How We Provide Better Local Weather

Current conditions: We use the nearest available station to your location - including professional MESONET/MADIS and local weather stations - often miles closer than regional airports.

Forecasts: National Weather Service point forecasts predict for your specific area, not broad regional zones, making them far more relevant to your location.

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