Weather Tomorrow

Weather Tomorrow in McKinney, TX

Extreme Heat WarningUntil Aug 25, 6:00 PM

Extreme Heat Warning issued August 25 at 12:51AM CDT until August 25 at 9:00PM CDT by NWS Fort Worth TX

Take extra precautions when outside by staying hydrated, wearing lightweight and loose fitting clothing, and limiting strenuous activities to the early morning or evening. Check up on relatives and neighbors. Never leave young children or pets in an enclosed vehicle, even for a short time, as temperatures can quickly rise to life-threatening levels. Know the signs and symptoms of heat exhaustion and heat stroke. To reduce risk when outdoors, the occupational safety and health administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 911 ASAP if you or someone you know is exhibiting signs of heat stroke. Extreme heat is dangerous, especially for those without reliable shelter. Limit time outdoors during the hottest time of the day, typically from 2 to 7 PM, rest in the shade when possible, and drink plenty of water. Locate nearby cooling centers through local resources or dial 2-1-1 in Texas.

Wednesday, August 26, 2026

102°Low 82°FColdHot
Clear

Precip chance

15%

Wind

5-10 mph

Humidity

45%

Feels like

100–84°F

Data source: National Weather Service (NOAA) · Updated 37 min ago

Tomorrow by Hour

82°Temperature trend102°
TimeTempConditionRain %Wind
5 AM90°FMostly Clear
1%
10 mph S
6 AM89°FMostly Clear
1%
10 mph S
7 AM88°FMostly Clear
1%
10 mph S
8 AM87°FPartly Cloudy
1%
10 mph SSW
9 AM85°FPartly Cloudy
2%
10 mph SSW
10 AM84°FPartly Cloudy
2%
10 mph SSW
11 AM84°FMostly Sunny
2%
10 mph SW
12 PM82°FMostly Sunny
6%
5 mph SW
1 PM84°FMostly Sunny
6%
5 mph SW
2 PM87°FMostly Sunny
6%
10 mph WSW
3 PM91°FMostly Sunny
5%
10 mph W
4 PM94°FMostly Sunny
5%
10 mph W
5 PM97°FMostly Sunny
5%
10 mph W
6 PM99°FMostly Sunny
11%
10 mph WNW
7 PM101°FMostly Sunny
11%
10 mph WNW
8 PM101°FMostly Sunny
11%
10 mph NW
9 PM101°FSlight Chance Showers And Thunderstorms
15%
10 mph NW
10 PM102°FSlight Chance Showers And Thunderstorms
15%
10 mph NW
11 PM101°FSlight Chance Showers And Thunderstorms
15%
5 mph WNW
12 AM99°FMostly Clear
10%
5 mph NW
1 AM97°FMostly Clear
10%
5 mph NNW
2 AM93°FPartly Cloudy
10%
5 mph N
3 AM89°FPartly Cloudy
10%
5 mph N
4 AM88°FPartly Cloudy
10%
5 mph N

Precipitation Timeline

100%
50%
5a11a5p11p
<20%20-50%50-70%>70%

What to Wear Tomorrow

Extreme heat — stay cool and protected

Clothing

  • Lightest possible clothing
  • Wide-brim hat
  • UV-protective shirt if outdoors

Footwear

Breathable sandals

Accessories

  • Sunglasses
  • Sunscreen

Conditions

High: 102°F

Low: 82°F

Wind: 5-10 mph

Rain: 15%

Enjoy your day!

Best Time to Be Outside Tomorrow

12 PM – 1 PM85

Excellent conditions for outdoor activities (dry, light wind, daylight)

5a11a5p11p

More for McKinney, TX

Forecast by ZIP in McKinney

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Frequently Asked Questions

What is the weather forecast for tomorrow in McKinney, TX?
Tomorrow in McKinney: High of 102°F, Low of 82°F. Clear with 15% chance of precipitation. Wind 5-10 mph.
Will it rain tomorrow in McKinney?
No significant precipitation expected tomorrow.
What should I wear tomorrow in McKinney?
With a high of 102°F and low of 82°F, check our "What to Wear" section above for specific clothing recommendations based on temperature, wind, and precipitation.
How accurate is this forecast?
Our forecasts come directly from the National Weather Service (NOAA), which provides some of the most accurate weather predictions available. Tomorrow forecasts are generally 80-90% accurate, with accuracy decreasing the further out you look. Data is refreshed every 30 minutes.