Current Weather Forecast for San Marcos

TX 78667  |   9:26pm

Weather Conditions

85°

Feels Like 86°

Clear

76° 101°

0

UV Index

Moderate

Air Quality

E 5 mph

Wind

0 in

rain

Tonight

Sun 8/2

72°

Lowest Temperature

4%

A clear sky. Low 72F. Winds light and variable.

Tomorrow

Mon 8/3

101°

Highest Temperature

4%

Mostly sunny skies. Hot. High 101F. Winds S at 5 to 10 mph.

Tomorrow night

Mon 8/3

75°

Lowest Temperature

7%

A mostly clear sky. Low around 75F. Winds S at 5 to 10 mph.

Next 12 Hours Next 7 Days

Next 12 Hours Forecast in San Marcos

Hourly Weather Forecast & Temperature

10PM

83°

Feels Like 84°

Clear

E 5 mph

Wind

1010 mb

Pressure

46%

Humidity

0

UV Index

10mi

Visibility

2%

Cloud Cover

11PM

80°

Feels Like 82°

Clear

ESE 4 mph

Wind

1010 mb

Pressure

54%

Humidity

0

UV Index

10mi

Visibility

1%

Cloud Cover

12AM

1%

79°

Feels Like 81°

Clear

SE 4 mph

Wind

1010 mb

Pressure

58%

Humidity

0

UV Index

10mi

Visibility

1%

Cloud Cover

1AM

1%

78°

Feels Like 78°

Clear

SE 2 mph

Wind

1011 mb

Pressure

67%

Humidity

0

UV Index

10mi

Visibility

0%

Cloud Cover

2AM

1%

77°

Feels Like 77°

Clear

SSE 3 mph

Wind

1011 mb

Pressure

67%

Humidity

0

UV Index

10mi

Visibility

0%

Cloud Cover

3AM

1%

76°

Feels Like 76°

Clear

S 2 mph

Wind

1010 mb

Pressure

73%

Humidity

0

UV Index

10mi

Visibility

0%

Cloud Cover

4AM

1%

75°

Feels Like 75°

Clear

WSW 3 mph

Wind

1010 mb

Pressure

74%

Humidity

0

UV Index

10mi

Visibility

0%

Cloud Cover

5AM

3%

74°

Feels Like 76°

Clear

SW 3 mph

Wind

1010 mb

Pressure

77%

Humidity

0

UV Index

10mi

Visibility

0%

Cloud Cover

6AM

4%

74°

Feels Like 75°

Clear

WSW 3 mph

Wind

1011 mb

Pressure

80%

Humidity

0

UV Index

10mi

Visibility

0%

Cloud Cover

7AM

4%

73°

Feels Like 75°

Sunny

WSW 3 mph

Wind

1011 mb

Pressure

84%

Humidity

0

UV Index

10mi

Visibility

0%

Cloud Cover

8AM

2%

76°

Feels Like 80°

Sunny

SW 2 mph

Wind

1012 mb

Pressure

79%

Humidity

0

UV Index

10mi

Visibility

0%

Cloud Cover

9AM

1%

82°

Feels Like 87°

Sunny

SW 4 mph

Wind

1012 mb

Pressure

70%

Humidity

2

UV Index

10mi

Visibility

0%

Cloud Cover

Sun 8/2

Sun

4%

76°

101°

Mainly clear. Lows overnight in the low 70s.

86°

Feels Like

SSE 6 mph

Wind

64%

Humidity

0

UV Index

6:51 AM

Sunrise

8:24 PM

Sunset

Mon 8/3

Mon

4%

72°

101°

More sun than clouds. Highs 99 to 103F and lows in the mid 70s.

104°

Feels Like

S 8 mph

Wind

50%

Humidity

11

UV Index

6:52 AM

Sunrise

8:23 PM

Sunset

Tue 8/4

Tue

9%

75°

101°

Mix of sun and clouds. Highs 99 to 103F and lows in the mid 70s.

106°

Feels Like

S 11 mph

Wind

57%

Humidity

11

UV Index

6:53 AM

Sunrise

8:22 PM

Sunset

Wed 8/5

Wed

9%

76°

100°

Partly cloudy. Highs 98 to 102F and lows in the upper 70s.

106°

Feels Like

S 11 mph

Wind

59%

Humidity

11

UV Index

6:53 AM

Sunrise

8:21 PM

Sunset

Thu 8/6

Thu

9%

77°

99°

Times of sun and clouds. Highs in the upper 90s and lows in the mid 70s.

105°

Feels Like

S 11 mph

Wind

58%

Humidity

11

UV Index

6:54 AM

Sunrise

8:21 PM

Sunset

Fri 8/7

Fri

22%

76°

98°

Mix of sun and clouds. Highs in the upper 90s and lows in the mid 70s.

104°

Feels Like

S 10 mph

Wind

58%

Humidity

11

UV Index

6:54 AM

Sunrise

8:20 PM

Sunset

Sat 8/8

Sat

8%

75°

98°

Mostly sunny. Highs in the upper 90s and lows in the mid 70s.

104°

Feels Like

SSE 10 mph

Wind

60%

Humidity

11

UV Index

6:55 AM

Sunrise

8:19 PM

Sunset

Sun 8/9

Sun

20%

75°

98°

A few clouds. Highs in the upper 90s and lows in the mid 70s.

104°

Feels Like

SSE 11 mph

Wind

60%

Humidity

11

UV Index

6:56 AM

Sunrise

8:18 PM

Sunset

Plans up in the air? We'll help you weather-proof them. Get the FREE FOX Weather app.

Download the App

Looking for homes in this area?

• 2101 Mustang Ln, San Marcos, TX 78666
• 1673 Scull Rd, San Marcos, TX 78666
• 908 Light Ray RD, Marion, TX 78124

Sponsored by Redfin. Housing data supplied by Redfin independent of FOX Weather.

Latest Stories from Texas

Hidden hazard: How to stay safe from harmful algal blooms this summer

As millions of Americans head to beaches, lakes and other bodies of water this summer, health officials are warning about harmful algal blooms that can pose serious health risks to people and pets.

The top 10 worst states for battling mosquitos thanks to heat and humidity

Outside ranked the 10 worst states for mosquitoes in 2026. Here's where the biting pests thrive most, and the climate and landscapes that help fuel their populations.

Bryan Norcross: The Atlantic goes quiet after Bertha fades away

The remnants of former Tropical Storm Bertha have moved into northern Mexico. It's now a weak disturbance over the mountains.

Battered and bruised Bertha weakens as all storm watches and warnings are discontinued

Tropical Storm Bertha is back in the northern Gulf and racing toward Texas, where it is expected to make a second landfall Thursday afternoon after striking southeast Louisiana on Wednesday.

Load More Stories