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

90°F

32°C

Humidity 32%
Wind Speed SSW 5 MPH
Barometer 30.02 in (1016.59 mb)
Dewpoint 56°F (13°C)
Visibility NA
Heat Index88°F (31°C)
Last update 18 Aug 12:30 PM PDT
Extended Forecast for

3 Miles SW Crestline CA

Extreme Heat Watch August 21, 10:00am until August 22, 08:00pm
Click here for hazard details and duration
Extreme Heat Watch

  • This Afternoon

    This Afternoon: Sunny, with a high near 93. Southwest wind 5 to 10 mph.

    High: 93 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 65. Southwest wind around 5 mph becoming calm in the evening.

    Low: 65 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 93. Light and variable wind becoming southwest 5 to 10 mph in the morning.

    High: 93 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 67. Southwest wind around 5 mph becoming calm in the evening.

    Low: 67 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 97. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 97 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 71.

    Low: 71 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 100.

    High: 100 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 74.

    Low: 74 °F

    Mostly Clear

  • Friday

    Friday: A slight chance of showers and thunderstorms after 11am. Mostly sunny, with a high near 100.

    High: 100 °F

    Slight Chance
    T-storms

Detailed Forecast

This Afternoon
Sunny, with a high near 93. Southwest wind 5 to 10 mph.
Tonight
Clear, with a low around 65. Southwest wind around 5 mph becoming calm in the evening.
Tuesday
Sunny, with a high near 93. Light and variable wind becoming southwest 5 to 10 mph in the morning.
Tuesday Night
Mostly clear, with a low around 67. Southwest wind around 5 mph becoming calm in the evening.
Wednesday
Sunny, with a high near 97. Calm wind becoming southwest around 5 mph in the afternoon.
Wednesday Night
Mostly clear, with a low around 71.
Thursday
Sunny, with a high near 100.
Thursday Night
Mostly clear, with a low around 74.
Friday
A slight chance of showers and thunderstorms after 11am. Mostly sunny, with a high near 100.
Friday Night
A slight chance of showers and thunderstorms before 11pm. Partly cloudy, with a low around 73.
Saturday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 98.
Saturday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 73.
Sunday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 96.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SW Crestline CA
 34.2°N 117.34°W (Elev. 2024 ft)
Last Update:
2:04 am PDT Aug 18, 2025
Forecast Valid:
12pm PDT Aug 18, 2025-6pm PDT Aug 24, 2025
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation