McKinney, TX Weather Forecast
Local 7-day forecast
Mostly Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for McKinney, TX in one place.
Mostly sunny, with a high near 107. Heat index values as high as 106. Southwest wind 10 to 15 mph.
Local Weather Overview
This forecast page for McKinney, TX is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Aug 23, 2026 6:34 PM CDT.
The active forecast window currently covers Aug 24 to Aug 29, 2026 for McKinney, TX.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Aug 24 to Aug 29, 2026
- Latest sync
- Aug 23, 2026 6:34 PM CDT
- Forecast office
- FWD
- Source
- NOAA / NWS
Daily Outlook
This Week in McKinney
Monday looks like the warmest upcoming period in McKinney at 107 degrees F.
Thursday Night is the coolest period ahead with temperatures near 78 degrees F.
The strongest winds are forecast for Monday at about 10 to 15 mph SW.
Precipitation is mentioned in 3 upcoming forecast periods.
Forecast Details
- Last updated
- Aug 23, 2026 6:34 PM CDT
- Coverage
- 6 days
- Time zone
- America/Chicago
- Forecast office
- FWD
- Radar station
- KFWS
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
A slight chance of showers and thunderstorms after 1am. Mostly clear. Low around 84, with temperatures rising to around 86 overnight. Heat index values as high as 105. South southwest wind 10 to 15 mph, with gusts as high as 25 mph.
A slight chance of showers and thunderstorms before 7am. Sunny. High near 106, with temperatures falling to around 104 in the afternoon. South southwest wind around 10 mph, with gusts as high as 20 mph.
Mostly clear. Low around 82, with temperatures rising to around 84 overnight. South wind around 10 mph.
Mostly sunny, with a high near 102. West southwest wind 5 to 10 mph.
Partly cloudy, with a low around 79. North northeast wind around 5 mph.
A slight chance of rain showers between 7am and 1pm. Sunny, with a high near 101. East northeast wind 5 to 10 mph. Chance of precipitation is 20%.
Partly cloudy, with a low around 78.
Mostly sunny, with a high near 100.
Mostly clear, with a low around 78.
Sunny, with a high near 100.
Mostly clear, with a low around 79.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Monday
Aug 24
|
Mostly Sunny
|
107°F |
10 to 15 mph
SW
|
|
Monday Night
Aug 24
|
Mostly Clear then Slight Chance Showers And Thunderstorms
|
84°F |
10 to 15 mph
SSW
|
|
Tuesday
Aug 25
|
Slight Chance Showers And Thunderstorms then Sunny
|
106°F |
10 mph
SSW
|
|
Tuesday Night
Aug 25
|
Mostly Clear
|
82°F |
10 mph
S
|
|
Wednesday
Aug 26
|
Mostly Sunny
|
102°F |
5 to 10 mph
WSW
|
|
Wednesday Night
Aug 26
|
Partly Cloudy
|
79°F |
5 mph
NNE
|
|
Thursday
Aug 27
|
Slight Chance Rain Showers
|
101°F |
5 to 10 mph
ENE
|
|
Thursday Night
Aug 27
|
Partly Cloudy
|
78°F |
5 to 10 mph
E
|
|
Friday
Aug 28
|
Mostly Sunny
|
100°F |
5 to 10 mph
SE
|
|
Friday Night
Aug 28
|
Mostly Clear
|
78°F |
5 to 10 mph
SSE
|
|
Saturday
Aug 29
|
Sunny
|
100°F |
5 to 10 mph
S
|
|
Saturday Night
Aug 29
|
Mostly Clear
|
79°F |
10 mph
SSE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around McKinney.
