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

Hazardous Weather Conditions

Current conditions at

San Luis Obispo, San Luis Obispo County-Mc Chesney Field (KSBP)

Lat: 35.23611°NLon: 120.63611°WElev: 207.0ft.

Partly Cloudy

70°F

21°C

Humidity 77%
Wind Speed SE 3 MPH
Barometer 29.95 in (1014.22 mb)
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Last update 27 Aug 10:15 AM PDT
Extended Forecast for

San Luis Obispo CA

Heat Advisory August 27, 10:39am until August 28, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory August 27, 10:39am until August 28, 08:00pm

    NOW until 8:00pm Fri

    Heat Advisory

  • Today

    High: 92 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 60. North northeast wind 5 to 10 mph.

    Low: 60 °F

    Slight Chance
    T-storms

  • Friday

    Friday: A 30 percent chance of showers and thunderstorms. Cloudy, then gradually becoming mostly sunny, with a high near 88. Northwest wind 5 to 15 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 88 °F

    Chance
    T-storms

  • Friday Night

    Friday Night: A 20 percent chance of showers before 11pm. Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 58. North northwest wind 5 to 15 mph, with gusts as high as 20 mph.

    Low: 58 °F

    Slight Chance
    Showers and
    Patchy Fog
    then Patchy
    Fog

  • Saturday

    Saturday: Patchy fog before 11am. Otherwise, mostly sunny, with a high near 81. North wind 5 to 15 mph becoming west in the afternoon. Winds could gust as high as 20 mph.

    High: 81 °F

    Patchy Fog
    then Sunny

  • Saturday Night

    Saturday Night: Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 53.

    Low: 53 °F

    Patchy Fog

  • Sunday

    Sunday: Patchy fog before 11am. Otherwise, mostly sunny, with a high near 74.

    High: 74 °F

    Patchy Fog
    then Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 53.

    Low: 53 °F

    Mostly Cloudy

Detailed Forecast

Today
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 92. North northwest wind around 10 mph.
Tonight
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 60. North northeast wind 5 to 10 mph.
Friday
A 30 percent chance of showers and thunderstorms. Cloudy, then gradually becoming mostly sunny, with a high near 88. Northwest wind 5 to 15 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday Night
A 20 percent chance of showers before 11pm. Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 58. North northwest wind 5 to 15 mph, with gusts as high as 20 mph.
Saturday
Patchy fog before 11am. Otherwise, mostly sunny, with a high near 81. North wind 5 to 15 mph becoming west in the afternoon. Winds could gust as high as 20 mph.
Saturday Night
Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 53.
Sunday
Patchy fog before 11am. Otherwise, mostly sunny, with a high near 74.
Sunday Night
Mostly cloudy, with a low around 53.
Monday
Mostly sunny, with a high near 71.
Monday Night
Mostly cloudy, with a low around 53.
Tuesday
Mostly sunny, with a high near 73.
Tuesday Night
A slight chance of showers. Mostly cloudy, with a low around 56.
Wednesday
A slight chance of showers. Partly sunny, with a high near 75.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
San Luis Obispo CA
 35.27°N 120.66°W (Elev. 262 ft)
Last Update:
10:31 am PDT Aug 27, 2026
Forecast Valid:
10am PDT Aug 27, 2026-6pm PDT Sep 2, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation