Collin County, TX Weather Forecast
County weather hub
Slight Chance Showers And Thunderstorms
Compare major city weather across Collin County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 85. South southeast wind 0 to 5 mph. Chance of precipitation is 20%.
County Weather Overview
This county weather page brings together forecast coverage for Collin County so visitors can compare temperatures, wind, and conditions across the region without hopping between unrelated pages.
Current forecast coverage spans 17 of 17 mapped cities in Collin County.
Page Snapshot
- Page focus
- county weather
- Forecast window
- May 26 to May 30, 2026
- Latest sync
- May 23, 2026 10:27 PM CDT
- Forecast office
- FWD
- Source
- NOAA / NWS
Daily Outlook
This Week in Collin County
Friday looks like the warmest upcoming period in Collin County at 86 degrees F.
Wednesday Night is the coolest period ahead with temperatures near 68 degrees F.
The strongest winds are forecast for Wednesday at about 5 to 10 mph S.
Precipitation is mentioned in 9 upcoming forecast periods.
Forecast Details
- Last updated
- May 23, 2026 10:27 PM CDT
- Coverage
- 5 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 before 7pm, then showers and thunderstorms. Partly cloudy, with a low around 69. South southeast wind around 5 mph. Chance of precipitation is 80%.
Showers and thunderstorms. Mostly cloudy, with a high near 82. South wind 5 to 10 mph. Chance of precipitation is 80%.
Showers and thunderstorms before 7pm, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 68. South southeast wind 0 to 10 mph. Chance of precipitation is 80%.
A chance of showers and thunderstorms. Partly sunny, with a high near 83. Chance of precipitation is 30%.
A chance of showers and thunderstorms. Partly cloudy, with a low around 69. Chance of precipitation is 30%.
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 86. Chance of precipitation is 20%.
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 70. Chance of precipitation is 20%.
A slight chance of showers and thunderstorms. Partly sunny, with a high near 85. Chance of precipitation is 20%.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Tuesday
May 26
|
Slight Chance Showers And Thunderstorms
|
85°F |
0 to 5 mph
SSE
|
|
Tuesday Night
May 26
|
Slight Chance Showers And Thunderstorms then Showers And Thunderstorms
|
69°F |
5 mph
SSE
|
|
Wednesday
May 27
|
Showers And Thunderstorms
|
82°F |
5 to 10 mph
S
|
|
Wednesday Night
May 27
|
Showers And Thunderstorms then Chance Showers And Thunderstorms
|
68°F |
0 to 10 mph
SSE
|
|
Thursday
May 28
|
Chance Showers And Thunderstorms
|
83°F |
0 to 5 mph
SSW
|
|
Thursday Night
May 28
|
Chance Showers And Thunderstorms
|
69°F |
0 to 5 mph
SSE
|
|
Friday
May 29
|
Slight Chance Showers And Thunderstorms
|
86°F |
0 to 5 mph
SSW
|
|
Friday Night
May 29
|
Slight Chance Showers And Thunderstorms
|
70°F |
5 mph
SE
|
|
Saturday
May 30
|
Slight Chance Showers And Thunderstorms
|
85°F |
5 to 10 mph
SE
|
Major City Forecasts
Live forecast snapshots for major cities across Collin County.
Coverage
Forecast coverage currently spans 17 of 17 mapped cities in Collin County.
Largest mapped city population in this region: 291,296.
