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

Heat Builds in the West; Severe Thunderstorms and Heavy Rain in the Upper Midwest and Mid-Mississippi Valley; Extremely Critical Fire Weather in the Northwest on Saturday

A heat wave over the Southwest will intensify this week, peaking and expanding into the Intermountain West and northern High Plains this weekend. Severe thunderstorms and heavy rainfall are expected over parts of the Upper Midwest to mid-Mississippi Valley today. Critical to extremely critical fire weather conditions from the Northwest and the northern Great Basin on Saturday and Sunday. Read More >

Hazardous Weather Conditions

Current conditions at

McKinney - McKinney National Airport (KTKI)

Lat: 33.18°NLon: 96.59°WElev: 584ft.

Fair

83°F

28°C

Humidity 72%
Wind Speed S 7 mph
Barometer 29.97 in (1014.1 mb)
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index89°F (32°C)
Last update 31 Jul 7:53 am CDT
Extended Forecast for

2 Miles SSE Princeton TX

Heat Advisory July 31, 07:59am until July 31, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory July 31, 07:59am until July 31, 08:00pm

    NOW until 8:00pm Fri

    Heat Advisory

  • Today

    High: 103 °F

    Hot

  • Tonight

    Tonight: Partly cloudy, with a low around 80. South southwest wind around 5 mph becoming west after midnight.

    Low: 80 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 97. North wind 5 to 15 mph, with gusts as high as 20 mph.

    High: 97 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 73. North northeast wind 5 to 10 mph.

    Low: 73 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 95. North wind 5 to 10 mph.

    High: 95 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 74. North northeast wind around 5 mph becoming calm in the evening.

    Low: 74 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 97. Calm wind becoming east northeast around 5 mph in the afternoon.

    High: 97 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 75. East wind around 5 mph.

    Low: 75 °F

    Clear

Detailed Forecast

Today
Sunny and hot, with a high near 103. Heat index values as high as 110. Southwest wind around 10 mph.
Tonight
Partly cloudy, with a low around 80. South southwest wind around 5 mph becoming west after midnight.
Saturday
Mostly sunny, with a high near 97. North wind 5 to 15 mph, with gusts as high as 20 mph.
Saturday Night
Mostly clear, with a low around 73. North northeast wind 5 to 10 mph.
Sunday
Sunny, with a high near 95. North wind 5 to 10 mph.
Sunday Night
Clear, with a low around 74. North northeast wind around 5 mph becoming calm in the evening.
Monday
Sunny, with a high near 97. Calm wind becoming east northeast around 5 mph in the afternoon.
Monday Night
Clear, with a low around 75. East wind around 5 mph.
Tuesday
Sunny and hot, with a high near 99. South wind around 5 mph.
Tuesday Night
Clear, with a low around 77.
Wednesday
Sunny, with a high near 98.
Wednesday Night
Mostly clear, with a low around 77.
Thursday
Sunny, with a high near 98.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SSE Princeton TX
 33.17°N 96.49°W (Elev. 568 ft)
Last Update:
6:06 am CDT Jul 31, 2026
Forecast Valid:
7am CDT Jul 31, 2026-6pm CDT Aug 6, 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