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 AM CDT OCT 14, 2025
Clear 75°F
Feels Like:	75°F
Dewpoint:	64°F
Rel. Hum.:	69%
Visibility:	10 miles
Wind:	E at 7 mph
Pressure:	30.15 inches
Last 72 hours
Local Area Snow Depth
Texas Current Weather
Texas MOS Forecast Weather

Weather Map

(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

TODAY
Sunny. Highs in the lower 90s. East winds 5 to 10 mph.

TONIGHT
Clear. Lows around 60. East winds around 5 mph, becoming north after midnight.

WEDNESDAY
Sunny. Highs around 90. Northeast winds around 5 mph.

WEDNESDAY NIGHT
Mostly clear. Lows around 60. Southeast winds around 5 mph.

THURSDAY
Mostly sunny. Highs in the upper 80s. Southeast winds 5 to 10 mph.

THURSDAY NIGHT THROUGH SATURDAY
Mostly clear. Lows in the mid 60s. Highs in the lower 90s.

SATURDAY NIGHT
Mostly clear with a slight chance of showers. Lows in the mid 60s.

SUNDAY THROUGH MONDAY
Clear. Highs around 90. Lows in the upper 50s.

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 8:00 PM EDT 10/13/2025

DAY/DATE &
WEATHER FORECAST SUMMARY

TIME
CDT

TEMP
(deg. F)

FEELS
LIKE

CLOUD
COVER

PRECIP
PROB.

THUNDER
PROB.

WIND
dir./mph

REL
HUM

DEWPT
(deg. F)

Tuesday
14 OCT 2025

1 AM

69°

Clear

0% Thunder
( 0% severe)

SSE 5

73%

60°

Low 61°

4 AM

65°

Clear

NW 2

84%

60°

High 92°

7 AM

62°

63°

Clear

0% Thunder
( 0% severe)

N 2

90%

59°

Clear

10 AM

76°

78°

Clear

E 6

66%

64°

1 PM

87°

86°

Clear

0% Thunder
( 0% severe)

ESE 9

38%

58°

4 PM

91°

89°

Clear

E 8

29%

54°

7 PM

85°

83°

Clear

0% Thunder
( 1% severe)

E 7

32%

52°

10 PM

74°

Clear

ENE 3

48%

53°

Wednesday
15 OCT 2025

1 AM

69°

Clear

0% Thunder
( 1% severe)

N 2

61%

55°

Low 61°

4 AM

65°

Clear

NNW 3

70%

55°

High 93°

7 AM

62°

Clear

0% Thunder
( 2% severe)

N 5

78%

55°

Clear

10 AM

77°

79°

Clear

NNE 5

54%

59°

1 PM

87°

86°

Clear

0% Thunder
( 0% severe)

NE 7

35%

56°

4 PM

91°

88°

Clear

ENE 7

27%

52°

7 PM

84°

82°

Clear

0% Thunder
( 1% severe)

E 7

31%

50°

10 PM

74°

Clear

E 5

43%

50°


SAN MARCOS, TX extended weather forecast
Thursday 16 OCT 2025	Friday 17 OCT 2025	Saturday 18 OCT 2025	Sunday 19 OCT 2025	Monday 20 OCT 2025
Low 62°	Low 65°	Low 69°	Low 63°	Low 60°
High 91°	High 94°	High 91°	High 92°	High 95°

Partly Cloudy 6% Rain	Partly Cloudy 8% Rain	Partly Cloudy 20% Rain	Clear 19% Rain	Clear 6% Rain

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SAN MARCOS, TX 78666 Weather Forecast & Current Conditions

SAN MARCOS, TX Current Weather

SAN MARCOS, TX 78666 Weather Forecast

SAN MARCOS, TX 3 hourly weather forecast

SAN MARCOS, TX extended weather forecast

SAN MARCOS, TX
Current Weather

SAN MARCOS, TX 78666
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