National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

GRASS MOUNTAIN (GMTC1)

Lat: 34.64078°NLon: 118.41435°WElev: 4626.0ft.

NA

56°F

13°C

Humidity 31%
Wind Speed E 4 MPH
Barometer NA
Dewpoint 26°F (-3°C)
Visibility NA
Last update 20 Jan 12:59 PM PST
Extended Forecast for

13 Miles NNE Santa Clarita CA

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 68. Northeast wind around 15 mph, with gusts as high as 25 mph.

    High: 68 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 50. Northeast wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 50 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 66. North northeast wind 5 to 10 mph becoming southwest in the afternoon.

    High: 66 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: A 10 percent chance of rain after 4am. Mostly cloudy, with a low around 50. Southwest wind around 5 mph.

    Low: 50 °F

    Cloudy then
    Slight Chance
    Rain

  • Thursday

    Thursday: A 30 percent chance of rain, mainly after 10am. Partly sunny, with a high near 62. North northwest wind around 5 mph becoming southeast in the morning. New precipitation amounts of less than a tenth of an inch possible.

    High: 62 °F

    Chance Rain

  • Thursday Night

    Thursday Night: A 20 percent chance of rain before 4am. Mostly cloudy, with a low around 45.

    Low: 45 °F

    Slight Chance
    Rain

  • Friday

    Friday: A 20 percent chance of rain after 10am. Partly sunny, with a high near 60.

    High: 60 °F

    Slight Chance
    Rain

  • Friday Night

    Friday Night: Partly cloudy, with a low around 44.

    Low: 44 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 62.

    High: 62 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 68. Northeast wind around 15 mph, with gusts as high as 25 mph.
Tonight
Mostly cloudy, with a low around 50. Northeast wind 10 to 15 mph, with gusts as high as 20 mph.
Wednesday
Mostly cloudy, with a high near 66. North northeast wind 5 to 10 mph becoming southwest in the afternoon.
Wednesday Night
A 10 percent chance of rain after 4am. Mostly cloudy, with a low around 50. Southwest wind around 5 mph.
Thursday
A 30 percent chance of rain, mainly after 10am. Partly sunny, with a high near 62. North northwest wind around 5 mph becoming southeast in the morning. New precipitation amounts of less than a tenth of an inch possible.
Thursday Night
A 20 percent chance of rain before 4am. Mostly cloudy, with a low around 45.
Friday
A 20 percent chance of rain after 10am. Partly sunny, with a high near 60.
Friday Night
Partly cloudy, with a low around 44.
Saturday
Mostly sunny, with a high near 62.
Saturday Night
Mostly clear, with a low around 41.
Sunday
Sunny, with a high near 63.
Sunday Night
Partly cloudy, with a low around 41.
Monday
Mostly sunny, with a high near 61.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
13 Miles NNE Santa Clarita CA
 34.6°N 118.44°W (Elev. 2365 ft)
Last Update:
1:06 pm PST Jan 20, 2026
Forecast Valid:
2pm PST Jan 20, 2026-6pm PST Jan 26, 2026
 
Forecast Discussion
 
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Additional Resources

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National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation