Above Average Temperatures in the West; Winter Weather Returns to the Upper Midwest and Great Lakes

Well above average temperatures will continue across the West this week, potentially breaking some daily high temperature records. A storm system dropping south out of Canada will bring a wintry mix to the Upper Midwest and Great Lakes Tuesday, pushing into the Central Appalachians and interior Northeast on Wednesday. Read More >

Current conditions at

San Marcos, San Marcos Municipal Airport (KHYI)

Lat: 29.89° N Lon: 97.86° W Elev: 597 ft.

Overcast

47°F

8°C

Humidity 50%
Wind Speed W 3 mph
Barometer 30.36 in (1028.0 mb)
Dewpoint 29°F (-2°C)
Visibility 10.00 mi
Last update 13 Jan 12:56 am CST
Detailed forecast for

Caldwell County

Rest Of Tonight
Mostly cloudy. A slight chance of showers. Near steady temperature in the upper 40s. Light and variable winds, becoming southwest around 5 mph. Chance of rain 20 percent.
Tuesday
Mostly cloudy. A slight chance of showers in the morning. Highs in the mid 60s. Southwest winds around 5 mph. Chance of rain 20 percent.
Tuesday Night
Mostly clear. Lows in the lower 40s. Southwest winds around 5 mph.
Wednesday
Sunny. Highs around 70. Northwest winds 15 to 20 mph, becoming north in the afternoon.
Wednesday Night
Clear. Lows in the upper 30s. North winds 10 to 15 mph.
Thursday And Thursday Night
Clear. Highs in the lower 60s. Lows in the lower 40s.
Friday
Sunny. Highs around 70.
Friday Night And Saturday
Mostly clear. Lows around 40. Highs in the mid 60s.
Saturday Night And Sunday
Clear. Lows in the mid 30s. Highs in the mid 60s.
Sunday Night And Martin Luther King Jr Day
Partly cloudy. Lows in the lower 30s. Highs in the lower 60s.



Basemap Options
Click map to change the forecast location
Loading map...
1156 PM CST Mon Jan 12 2026
 
 

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database