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

101°F

38°C

Humidity 23%
Wind Speed N 6 MPH
Barometer 29.91 in (1012.87 mb)
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Heat Index100°F (38°C)
Last update 24 Aug 01:56 PM PDT
Extended Forecast for

3 Miles W Porterville CA

Heat Advisory August 24, 02:11pm until August 26, 11:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory August 24, 02:11pm until August 26, 11:00pm

    NOW until 11:00pm Wed

    Heat Advisory

  • This Afternoon

    High: 102 °F

    Hot

  • Tonight

    Tonight: Mostly clear, with a low around 70. West northwest wind around 5 mph becoming calm.

    Low: 70 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny and hot, with a high near 100. Calm wind becoming northwest around 5 mph in the afternoon.

    High: 100 °F

    Hot

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 70. West northwest wind 5 to 10 mph.

    Low: 70 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 100. South wind around 5 mph becoming west in the afternoon.

    High: 100 °F

    Hot

  • Wednesday Night

    Wednesday Night: Clear, with a low around 69. Northwest wind 5 to 10 mph becoming northeast in the evening.

    Low: 69 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 99. South wind around 5 mph becoming west in the afternoon.

    High: 99 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 71. North northwest wind 5 to 10 mph, with gusts as high as 15 mph.

    Low: 71 °F

    Mostly Cloudy

Detailed Forecast

This Afternoon
Sunny and hot, with a high near 102. West northwest wind around 5 mph.
Tonight
Mostly clear, with a low around 70. West northwest wind around 5 mph becoming calm.
Tuesday
Sunny and hot, with a high near 100. Calm wind becoming northwest around 5 mph in the afternoon.
Tuesday Night
Mostly clear, with a low around 70. West northwest wind 5 to 10 mph.
Wednesday
Sunny and hot, with a high near 100. South wind around 5 mph becoming west in the afternoon.
Wednesday Night
Clear, with a low around 69. Northwest wind 5 to 10 mph becoming northeast in the evening.
Thursday
Sunny, with a high near 99. South wind around 5 mph becoming west in the afternoon.
Thursday Night
Mostly cloudy, with a low around 71. North northwest wind 5 to 10 mph, with gusts as high as 15 mph.
Friday
Partly sunny, with a high near 98. South wind around 5 mph becoming west northwest in the afternoon.
Friday Night
Partly cloudy, with a low around 69. North wind 5 to 10 mph.
Saturday
Sunny, with a high near 97. South wind around 5 mph becoming west northwest in the afternoon.
Saturday Night
Mostly clear, with a low around 66. West northwest wind 5 to 10 mph.
Sunday
Sunny, with a high near 95. South wind around 5 mph becoming west in the afternoon.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles W Porterville CA
 36.08°N 119.07°W (Elev. 397 ft)
Last Update:
2:02 pm PDT Aug 24, 2026
Forecast Valid:
2pm PDT Aug 24, 2026-6pm PDT Aug 30, 2026
 
Forecast Discussion
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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