Williamson County, TX Weather Forecast
County weather hub
Partly Sunny
Compare major city weather across Williamson County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
Partly sunny, with a high near 93. Heat index values as high as 101. South wind around 10 mph, with gusts as high as 20 mph.
County Weather Overview
This county weather page brings together forecast coverage for Williamson County so visitors can compare temperatures, wind, and conditions across the region without hopping between unrelated pages.
Current forecast coverage spans 12 of 12 mapped cities in Williamson County.
Page Snapshot
- Page focus
- county weather
- Forecast window
- Jul 18 to Jul 24, 2026
- Latest sync
- Jul 18, 2026 8:38 AM CDT
- Forecast office
- EWX
- Source
- NOAA / NWS
Daily Outlook
This Week in Williamson County
Wednesday looks like the warmest upcoming period in Williamson County at 97 degrees F.
Monday Night is the coolest period ahead with temperatures near 72 degrees F.
The strongest winds are forecast for Today at about 10 mph S.
The forecast from Jul 18 through Jul 24 stays mostly dry.
Forecast Details
- Last updated
- Jul 18, 2026 8:38 AM CDT
- Coverage
- 7 days
- Time zone
- America/Chicago
- Forecast office
- EWX
- Radar station
- KGRK
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Partly cloudy, with a low around 75. South wind around 10 mph.
Mostly sunny, with a high near 94. Heat index values as high as 101. South wind 5 to 10 mph.
Mostly clear, with a low around 74. Heat index values as high as 100. South wind 5 to 10 mph.
Sunny, with a high near 95. South southwest wind 5 to 10 mph.
Clear, with a low around 72. South wind 5 to 10 mph.
Sunny, with a high near 95. South southwest wind around 5 mph.
Clear, with a low around 74. South wind around 5 mph.
Sunny, with a high near 97. South wind around 5 mph.
Mostly clear, with a low around 76.
Sunny, with a high near 97.
Mostly clear, with a low around 76.
Sunny, with a high near 96.
Mostly clear, with a low around 76.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Today
Jul 18
|
Partly Sunny
|
93°F |
10 mph
S
|
|
Tonight
Jul 18
|
Partly Cloudy
|
75°F |
10 mph
S
|
|
Sunday
Jul 19
|
Mostly Sunny
|
94°F |
5 to 10 mph
S
|
|
Sunday Night
Jul 19
|
Mostly Clear
|
74°F |
5 to 10 mph
S
|
|
Monday
Jul 20
|
Sunny
|
95°F |
5 to 10 mph
SSW
|
|
Monday Night
Jul 20
|
Clear
|
72°F |
5 to 10 mph
S
|
|
Tuesday
Jul 21
|
Sunny
|
95°F |
5 mph
SSW
|
|
Tuesday Night
Jul 21
|
Clear
|
74°F |
5 mph
S
|
|
Wednesday
Jul 22
|
Sunny
|
97°F |
5 mph
S
|
|
Wednesday Night
Jul 22
|
Mostly Clear
|
76°F |
5 mph
S
|
|
Thursday
Jul 23
|
Sunny
|
97°F |
5 mph
S
|
|
Thursday Night
Jul 23
|
Mostly Clear
|
76°F |
5 mph
SSE
|
|
Friday
Jul 24
|
Sunny
|
96°F |
5 mph
S
|
|
Friday Night
Jul 24
|
Mostly Clear
|
76°F |
5 mph
S
|
Major City Forecasts
Live forecast snapshots for major cities across Williamson County.
Coverage
Forecast coverage currently spans 12 of 12 mapped cities in Williamson County.
Largest mapped city population in this region: 137,575.
