Current conditions at
San Marcos, San Marcos Municipal Airport (KHYI)
Lat: 29.89°NLon: 97.86°WElev: 597ft.
Fair
94°F
34°C
| Humidity | 46% |
| Wind Speed | Vrbl 5 mph |
| Barometer | 29.96 in (1013.6 mb) |
| Dewpoint | 70°F (21°C) |
| Visibility | 10.00 mi |
| Heat Index | 100°F (38°C) |
| Last update | 21 Sep 12:56 pm CDT |
Extended Forecast for
Fentress TX
This Afternoon

High: 99 °F
Slight Chance
T-stormsTonight
Low: 74 °F
Slight Chance
T-storms then
Mostly ClearTuesday

High: 98 °F
Sunny
Tuesday Night
Low: 75 °F
Slight Chance
T-storms then
Slight Chance
ShowersWednesday

High: 99 °F
Hot
Wednesday Night

Low: 75 °F
Partly Cloudy
Thursday

High: 98 °F
Mostly Sunny
Thursday Night

Low: 73 °F
Mostly Cloudy
Friday

High: 96 °F
Mostly Sunny
Detailed Forecast
This Afternoon
A 20 percent chance of showers and thunderstorms after 4pm. Sunny and hot, with a high near 99. Heat index values as high as 105. Calm wind becoming east around 5 mph.
Tonight
A 20 percent chance of showers and thunderstorms before 10pm. Mostly clear, with a low around 74. East southeast wind around 5 mph becoming calm in the evening.
Tuesday
Sunny, with a high near 98. Heat index values as high as 102. Calm wind becoming east around 5 mph in the afternoon.
Tuesday Night
A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am. Partly cloudy, with a low around 75. East wind around 5 mph becoming calm in the evening. Chance of precipitation is 20%.
Wednesday
Mostly sunny and hot, with a high near 99. Light and variable wind becoming east 5 to 10 mph in the morning.
Wednesday Night
Partly cloudy, with a low around 75. East wind 5 to 10 mph becoming light and variable in the evening.
Thursday
Mostly sunny, with a high near 98. Light north northeast wind becoming east 5 to 10 mph in the morning.
Thursday Night
Mostly cloudy, with a low around 73. East wind 5 to 10 mph becoming light and variable in the evening.
Friday
Mostly sunny, with a high near 96. Calm wind becoming east around 5 mph in the afternoon.
Friday Night
Partly cloudy, with a low around 72.
Saturday
Mostly sunny, with a high near 96.
Saturday Night
Partly cloudy, with a low around 72.
Sunday
Mostly sunny, with a high near 97.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
Fentress TX
29.75°N 97.78°W (Elev. 436 ft)
29.75°N 97.78°W (Elev. 436 ft)
12:46 pm CDT Sep 21, 2026
1pm CDT Sep 21, 2026-6pm CDT Sep 27, 2026


