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

Hazardous Weather Conditions

Current conditions at

FW0494 San Bernardino CSU SB (F0494)

Lat: 34.18383°NLon: 117.322°WElev: 1519.0ft.

NA

92°F

33°C

Humidity 25%
Wind Speed ESE 2 MPH
Barometer 30.03 in (1016.93 mb)
Dewpoint 51°F (11°C)
Visibility NA
Heat Index89°F (32°C)
Last update 20 Aug 11:15 AM PDT
Extended Forecast for

4 Miles SSW Crestline CA

Heat Advisory until August 23, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory until August 23, 08:00pm

    NOW until 8:00pm Sat

    Heat Advisory

  • Today

    High: 98 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 73. Calm wind.

    Low: 73 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 102. Light and variable wind becoming southwest 5 to 10 mph in the afternoon.

    High: 102 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 75. South wind around 5 mph becoming calm in the evening.

    Low: 75 °F

    Mostly Clear

  • Friday

    Friday: A slight chance of showers and thunderstorms after 11am. Mostly sunny, with a high near 102. Calm wind becoming southwest around 5 mph. Chance of precipitation is 20%.

    High: 102 °F

    Slight Chance
    T-storms

  • Friday Night

    Friday Night: A slight chance of showers and thunderstorms before 11pm. Partly cloudy, with a low around 75. Chance of precipitation is 20%.

    Low: 75 °F

    Slight Chance
    T-storms then
    Mostly Clear

  • Saturday

    Saturday: A chance of showers and thunderstorms after 11am. Mostly sunny, with a high near 98. Chance of precipitation is 30%.

    High: 98 °F

    Chance
    T-storms

  • Saturday Night

    Saturday Night: A slight chance of showers and thunderstorms before 11pm. Partly cloudy, with a low around 74.

    Low: 74 °F

    Slight Chance
    T-storms then
    Mostly Clear

Detailed Forecast

Today
Sunny, with a high near 98. Southwest wind around 5 mph.
Tonight
Partly cloudy, with a low around 73. Calm wind.
Thursday
Sunny, with a high near 102. Light and variable wind becoming southwest 5 to 10 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 75. South wind around 5 mph becoming calm in the evening.
Friday
A slight chance of showers and thunderstorms after 11am. Mostly sunny, with a high near 102. Calm wind becoming southwest around 5 mph. Chance of precipitation is 20%.
Friday Night
A slight chance of showers and thunderstorms before 11pm. Partly cloudy, with a low around 75. Chance of precipitation is 20%.
Saturday
A chance of showers and thunderstorms after 11am. Mostly sunny, with a high near 98. Chance of precipitation is 30%.
Saturday Night
A slight chance of showers and thunderstorms before 11pm. Partly cloudy, with a low around 74.
Sunday
A slight chance of showers and thunderstorms after 11am. Mostly sunny, with a high near 97.
Sunday Night
A slight chance of showers and thunderstorms before 11pm. Partly cloudy, with a low around 72.
Monday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 94.
Monday Night
A slight chance of showers and thunderstorms. Mostly clear, with a low around 68.
Tuesday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 91.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SSW Crestline CA
 34.2°N 117.34°W (Elev. 2024 ft)
Last Update:
2:05 am PDT Aug 20, 2025
Forecast Valid:
11am PDT Aug 20, 2025-6pm PDT Aug 26, 2025
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation