National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Heavy Rainfall Threat Continues in the Southwest on Monday; Record Warmth in the Plains and Midwest

Remnant moisture from Tropical Storm Rachel will persist over portions of the Great Basin and Southwest on Monday, bringing a potential heavy to excessive rainfall risk. Well above average and potentially record breaking temperatures will develop across the Plains and Midwest early this week, spreading into the Lower Mississippi Valley and Southeast midweek. Read More >

Current conditions at

San Angelo, Mathis Field (KSJT)

Lat: 31.35°NLon: 100.49°WElev: 1916ft.

Fair

82°F

28°C

Humidity 41%
Wind Speed S 10 mph
Barometer 29.96 in (1012.5 mb)
Dewpoint 56°F (13°C)
Visibility 10.00 mi
Heat Index82°F (28°C)
Last update 11 Oct 7:51 pm CDT
Extended Forecast for

Mertzon TX

  • Tonight

    Tonight: Mostly clear, with a low around 66. South wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 66 °F

    Mostly Clear

  • Columbus Day

    Columbus Day: Mostly cloudy, then gradually becoming sunny, with a high near 89. South wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 89 °F

    Decreasing
    Clouds

  • Monday Night

    Monday Night: Increasing clouds, with a low around 70. South wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 70 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: Mostly cloudy, then gradually becoming sunny, with a high near 92. South wind around 15 mph, with gusts as high as 25 mph.

    High: 92 °F

    Decreasing
    Clouds

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 71. South wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 71 °F

    Mostly Clear

  • Wednesday

    Wednesday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 91. South wind around 15 mph, with gusts as high as 25 mph.

    High: 91 °F

    Partly Sunny
    then Slight
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A 50 percent chance of showers and thunderstorms. Partly cloudy, with a low around 67. South southeast wind around 10 mph, with gusts as high as 20 mph. New rainfall amounts between a quarter and half of an inch possible.

    Low: 67 °F

    Chance
    T-storms

  • Thursday

    Thursday: Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 84. South wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 84 °F

    Showers
    Likely

  • Thursday Night

    Thursday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 58. East northeast wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New rainfall amounts between 1 and 2 inches possible.

    Low: 58 °F

    Showers
    Likely

Detailed Forecast

Tonight
Mostly clear, with a low around 66. South wind 10 to 15 mph, with gusts as high as 25 mph.
Columbus Day
Mostly cloudy, then gradually becoming sunny, with a high near 89. South wind 10 to 15 mph, with gusts as high as 25 mph.
Monday Night
Increasing clouds, with a low around 70. South wind 10 to 15 mph, with gusts as high as 20 mph.
Tuesday
Mostly cloudy, then gradually becoming sunny, with a high near 92. South wind around 15 mph, with gusts as high as 25 mph.
Tuesday Night
Mostly clear, with a low around 71. South wind 10 to 15 mph, with gusts as high as 20 mph.
Wednesday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 91. South wind around 15 mph, with gusts as high as 25 mph.
Wednesday Night
A 50 percent chance of showers and thunderstorms. Partly cloudy, with a low around 67. South southeast wind around 10 mph, with gusts as high as 20 mph. New rainfall amounts between a quarter and half of an inch possible.
Thursday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 84. South wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. New rainfall amounts between a half and three quarters of an inch possible.
Thursday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 58. East northeast wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New rainfall amounts between 1 and 2 inches possible.
Friday
A 40 percent chance of showers, mainly before 1pm. Mostly cloudy, with a high near 70. Breezy, with a north northeast wind 15 to 20 mph, with gusts as high as 30 mph.
Friday Night
Mostly cloudy, with a low around 48.
Saturday
Mostly sunny, with a high near 67.
Saturday Night
Mostly clear, with a low around 46.
Sunday
Sunny, with a high near 74.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Mertzon TX
 31.26°N 100.82°W (Elev. 2274 ft)
Last Update:
3:16 pm CDT Oct 11, 2026
Forecast Valid:
8pm CDT Oct 11, 2026-6pm CDT Oct 18, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation