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

Extreme Heat Lingers; Severe Thunderstorms for Portions of the Plains and Southeast; Heavy Rainfall Threats

Gusty winds and heavy rainfall may impact the Big Island of Hawaii as a nearby tropical system passes west of the islands. From the Southwest U.S., Rockies and across the Gulf Coast, heavy rainfall could lead to isolated flash flooding. Severe thunderstorms are expected for areas of the Plains, Gulf Coast and Southeast through Tuesday. Extreme heat lingers for the southern Plains and Southwest. Read More >

Hazardous Weather Conditions

Current conditions at

Porterville, Porterville Municipal Airport (KPTV)

Lat: 36.03333°NLon: 119.06667°WElev: 443.0ft.

Clear

91°F

33°C

Humidity 31%
Wind Speed SW 6 MPH
Barometer 29.96 in (1014.56 mb)
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Heat Index89°F (32°C)
Last update 24 Aug 11:20 AM PDT
Extended Forecast for

4 Miles E Porterville CA

Heat Advisory until August 26, 11:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory until August 26, 11:00pm

    NOW until 11:00pm Wed

    Heat Advisory

  • Today

    High: 101 °F

    Hot

  • Tonight

    Tonight: Mostly clear, with a low around 72. South wind around 5 mph becoming calm after midnight.

    Low: 72 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny and hot, with a high near 100. Light and variable wind becoming west northwest 5 to 10 mph in the morning.

    High: 100 °F

    Hot

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 71. Northwest wind 5 to 10 mph becoming east southeast after midnight.

    Low: 71 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 99. South southeast wind 5 to 10 mph becoming west in the afternoon.

    High: 99 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 71. West northwest wind 5 to 10 mph becoming east after midnight. Winds could gust as high as 15 mph.

    Low: 71 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 98. Southeast wind around 5 mph becoming west in the afternoon.

    High: 98 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 72. Northwest wind 5 to 10 mph becoming light and variable in the evening. Winds could gust as high as 15 mph.

    Low: 72 °F

    Mostly Cloudy

Detailed Forecast

Today
Sunny and hot, with a high near 101. West northwest wind 5 to 10 mph.
Tonight
Mostly clear, with a low around 72. South wind around 5 mph becoming calm after midnight.
Tuesday
Sunny and hot, with a high near 100. Light and variable wind becoming west northwest 5 to 10 mph in the morning.
Tuesday Night
Mostly clear, with a low around 71. Northwest wind 5 to 10 mph becoming east southeast after midnight.
Wednesday
Sunny, with a high near 99. South southeast wind 5 to 10 mph becoming west in the afternoon.
Wednesday Night
Clear, with a low around 71. West northwest wind 5 to 10 mph becoming east after midnight. Winds could gust as high as 15 mph.
Thursday
Sunny, with a high near 98. Southeast wind around 5 mph becoming west in the afternoon.
Thursday Night
Mostly cloudy, with a low around 72. Northwest wind 5 to 10 mph becoming light and variable in the evening. Winds could gust as high as 15 mph.
Friday
Partly sunny, with a high near 97. Calm wind becoming west around 5 mph in the morning.
Friday Night
Partly cloudy, with a low around 71. Northwest wind 5 to 10 mph becoming light and variable in the evening.
Saturday
Sunny, with a high near 97. Light and variable wind becoming west 5 to 10 mph in the morning.
Saturday Night
Mostly clear, with a low around 67. West northwest wind 5 to 10 mph becoming east southeast after midnight. Winds could gust as high as 15 mph.
Sunday
Sunny, with a high near 94. Light and variable wind becoming west 5 to 10 mph in the afternoon.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles E Porterville CA
 36.07°N 118.96°W (Elev. 873 ft)
Last Update:
11:32 am PDT Aug 24, 2026
Forecast Valid:
11am PDT Aug 24, 2026-6pm PDT Aug 30, 2026
 
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