Grayson County, TX Weather Forecast
County weather hub
Mostly Sunny
Compare major city weather across Grayson County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
Mostly sunny, with a high near 91. Heat index values as high as 97. South wind 10 to 15 mph, with gusts as high as 25 mph.
County Weather Overview
This county weather page brings together forecast coverage for Grayson County so visitors can compare temperatures, wind, and conditions across the region without hopping between unrelated pages.
Current forecast coverage spans 7 of 7 mapped cities in Grayson County.
Page Snapshot
- Page focus
- county weather
- Forecast window
- Oct 13 to Oct 18, 2026
- Latest sync
- Oct 12, 2026 4:24 AM CDT
- Forecast office
- FWD
- Source
- NOAA / NWS
Daily Outlook
This Week in Grayson County
Tuesday looks like the warmest upcoming period in Grayson County at 91 degrees F.
Saturday Night is the coolest period ahead with temperatures near 48 degrees F.
The strongest winds are forecast for Friday at about 20 mph N.
Precipitation is mentioned in 5 upcoming forecast periods.
Forecast Details
- Last updated
- Oct 12, 2026 4:24 AM 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
Mostly clear, with a low around 74. South wind around 10 mph, with gusts as high as 20 mph.
A slight chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 90. South wind 10 to 15 mph. Chance of precipitation is 20%.
A slight chance of showers and thunderstorms before 7pm, then a chance of showers and thunderstorms. Partly cloudy, with a low around 70. South southeast wind around 10 mph. Chance of precipitation is 40%.
A chance of showers and thunderstorms. Mostly sunny, with a high near 84. West southwest wind around 10 mph. Chance of precipitation is 50%.
A chance of showers and thunderstorms. Partly cloudy, with a low around 62. North wind 5 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 50%.
A slight chance of rain showers before 7am. Partly sunny, with a high near 70. Chance of precipitation is 20%.
Partly cloudy, with a low around 51.
Sunny, with a high near 67.
Mostly clear, with a low around 48.
Sunny, with a high near 72.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Tuesday
Oct 13
|
Mostly Sunny
|
91°F |
10 to 15 mph
S
|
|
Tuesday Night
Oct 13
|
Mostly Clear
|
74°F |
10 mph
S
|
|
Wednesday
Oct 14
|
Mostly Sunny then Slight Chance Showers And Thunderstorms
|
90°F |
10 to 15 mph
S
|
|
Wednesday Night
Oct 14
|
Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms
|
70°F |
10 mph
SSE
|
|
Thursday
Oct 15
|
Chance Showers And Thunderstorms
|
84°F |
10 mph
WSW
|
|
Thursday Night
Oct 15
|
Chance Showers And Thunderstorms
|
62°F |
5 to 15 mph
N
|
|
Friday
Oct 16
|
Slight Chance Rain Showers then Partly Sunny
|
70°F |
20 mph
N
|
|
Friday Night
Oct 16
|
Partly Cloudy
|
51°F |
10 to 20 mph
NNE
|
|
Saturday
Oct 17
|
Sunny
|
67°F |
5 to 10 mph
NNE
|
|
Saturday Night
Oct 17
|
Mostly Clear
|
48°F |
0 to 5 mph
ENE
|
|
Sunday
Oct 18
|
Sunny
|
72°F |
5 mph
SE
|
Major City Forecasts
Live forecast snapshots for major cities across Grayson County.
Coverage
Forecast coverage currently spans 7 of 7 mapped cities in Grayson County.
Largest mapped city population in this region: 45,136.
