SAN MARCOS, TX 78666 Weather Forecast & Current Conditions

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78666 WEATHER WARNINGS (SEVERE T-STORM & TORNADO)

CURRENT WEATHER
SAN MARCOS, TX Current Weather
9:56 PM CST FEB 4, 2026
Clear 46°F
Feels Like:	42°F
Dewpoint:	39°F
Rel. Hum.:	76%
Visibility:	10 miles
Wind:	N at 8 mph
Pressure:	30.47 inches
Last 72 hours
Local Area Snow Depth
Texas Current Weather
Texas MOS Forecast Weather

Regional Weather Maps

(Automated weather data from NWS/FAA)

78666 WEATHER FORECAST
10-Day model forecast maps 2025 Hurricanes	SAN MARCOS, TX 78666 Weather Forecast	Snowfall Forecast pages Snow Depth pages

TONIGHT
Clear. Lows in the upper 30s. North winds 5 to 10 mph.

THURSDAY
Sunny. Highs in the upper 60s. Northwest winds around 5 mph.

THURSDAY NIGHT
Clear. Lows in the mid 40s. West winds 5 to 10 mph.

FRIDAY
Sunny. Not as cool with highs in the upper 70s. West winds 5 to 10 mph with gusts up to 20 mph, becoming north in the afternoon.

FRIDAY NIGHT
Clear. Lows in the mid 40s. South winds around 5 mph, becoming west after midnight.

SATURDAY
Sunny. Highs in the upper 70s.

SATURDAY NIGHT
Mostly clear in the evening, then becoming partly cloudy. Lows in the upper 40s.

SUNDAY
Partly cloudy in the morning, then becoming mostly cloudy. Highs in the upper 70s.

SUNDAY NIGHT
Partly cloudy. Lows in the lower 50s.

MONDAY
Mostly cloudy. Highs in the mid 70s.

MONDAY NIGHT AND TUESDAY
Mostly cloudy with a slight chance of showers. Lows in the mid 50s. Highs in the mid 70s.

TUESDAY NIGHT AND WEDNESDAY
Partly cloudy. Lows in the mid 50s. Highs in the mid 70s.

78666 WEATHER SATELLITE LOOPS

Visible Weather Satellite
SAN MARCOS, TX 78666

Infrared Weather Satellite
SAN MARCOS, TX 78666

78666 WEATHER RADAR LOOP

NEXRAD Weather Radar
SAN MARCOS, TX 78666

MOS COMPUTER WEATHER FORECAST

SAN MARCOS, TX 3 hourly weather forecast

weather forecast created 7:00 AM EST 2/ 4/2026

DAY/DATE &
WEATHER FORECAST SUMMARY

Wednesday
4 FEB 2026

12 PM

62°

60°

Clear

0%

0% Thunder
( 0% severe)

NNE 17

38%

36°

High 66°

3 PM

65°

65°

Partly Cloudy

N 16

33%

35°

Clear

6 PM

59°

57°

Clear

0%

0% Thunder
( 0% severe)

N 12

40%

35°

9 PM

51°

48°

Clear

N 8

56%

36°

Thursday
5 FEB 2026

12 AM

45°

41°

Clear

0%

0% Thunder
( 0% severe)

N 7

71%

36°

Low 37°

3 AM

41°

37°

Clear

NNW 6

82%

36°

High 70°

6 AM

39°

35°

Clear

0%

0% Thunder
( 0% severe)

NNW 6

85%

35°

Clear

9 AM

48°

46°

Clear

NNW 5

68%

38°

12 PM

63°

63°

Clear

0%

0% Thunder
( 0% severe)

WNW 7

35%

35°

3 PM

69°

69°

Clear

WNW 8

23%

30°

6 PM

63°

64°

Clear

0%

0% Thunder
( 0% severe)

W 5

27%

29°

9 PM

53°

51°

Clear

SW 7

39%

29°

Friday
6 FEB 2026

12 AM

48°

44°

Clear

0%

0% Thunder
( 0% severe)

WSW 8

49%

30°

Low 43°

3 AM

47°

43°

Clear

W 9

49%

29°

High 80°

6 AM

46°

42°

Clear

0%

0% Thunder
( 0% severe)

W 8

49%

28°

Clear

9 AM

56°

54°

Clear

W 8

38%

31°

12 PM

73°

73°

Clear

0%

0% Thunder
( 0% severe)

NW 8

22%

32°

3 PM

79°

78°

Clear

NNW 6

19%

33°

6 PM

71°

71°

Clear

ENE 3

27%

35°


SAN MARCOS, TX extended weather forecast
Saturday 7 FEB 2026	Sunday 8 FEB 2026	Monday 9 FEB 2026	Tuesday 10 FEB 2026	Wednesday 11 FEB 2026
Low 39°	Low 46°	Low 49°	Low 55°	Low 53°
High 78°	High 77°	High 77°	High 77°	High 68°

Clear 2% Rain	Clear 7% Rain	Partly Cloudy 12% Rain	Mostly Cloudy 22% Rain	Overcast 49% Rain

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