SUMMERVILLE, TX 78629 Weather Forecast & Current Conditions

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SAN MARCOS, TX
Current Weather

1:56 AM CDT JUN 9, 2026
Overcast
75°F
Feels Like: 75°F
Dewpoint: 75°F
Rel. Hum.: 100%
Visibility: 9 miles
Wind: S at 7 mph
Pressure: 30.03 inches
Last 72 hours

Local Area Snow Depth

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SUMMERVILLE, TX 78629
Weather Forecast

Snowfall Forecast pages
Snow Depth pages
REST OF TONIGHT
Partly cloudy. Near steady temperature in the mid 70s. Southeast winds around 5 mph.
TUESDAY
Partly cloudy in the morning, then mostly sunny with a slight chance of showers and thunderstorms in the afternoon. Humid with highs in the lower 90s. Southeast winds 5 to 10 mph. Chance of rain 20 percent.
TUESDAY NIGHT
Mostly clear in the evening, then becoming partly cloudy. Lows in the mid 70s. Southeast winds 5 to 10 mph.
WEDNESDAY
Partly cloudy with a slight chance of showers. A slight chance of thunderstorms in the afternoon. Humid with highs in the lower 90s. Southeast winds 10 to 15 mph.
WEDNESDAY NIGHT
Mostly clear in the evening, then becoming partly cloudy. Lows in the mid 70s. Southeast winds 10 to 15 mph.
THURSDAY AND THURSDAY NIGHT
Partly cloudy. Highs in the lower 90s. Lows in the upper 70s. Highest heat index readings up to 105.
FRIDAY
Partly cloudy. A slight chance of showers and thunderstorms in the afternoon. Highs in the lower 90s. Highest heat index readings up to 105.
FRIDAY NIGHT
Mostly clear in the evening, then becoming partly cloudy. Lows in the mid 70s.
SATURDAY
Partly cloudy. A slight chance of showers and thunderstorms in the afternoon. Highs in the lower 90s.
SATURDAY NIGHT
Partly cloudy. Lows in the mid 70s.
SUNDAY
Partly cloudy. A chance of showers and thunderstorms in the afternoon. Highs in the lower 90s. Chance of rain 30 percent. Highest heat index readings up to 105.
SUNDAY NIGHT
Partly cloudy. A slight chance of showers and thunderstorms in the evening, then a chance of showers after midnight. Lows in the mid 70s. Chance of rain 30 percent.
MONDAY
Mostly cloudy in the morning, then becoming partly cloudy. A chance of showers. A slight chance of thunderstorms in the morning, then a chance of thunderstorms in the afternoon. Highs in the lower 90s. Chance of rain 50 percent.

Visible Weather Satellite
SUMMERVILLE, TX 78629
Infrared Weather Satellite
SUMMERVILLE, TX 78629
NEXRAD Weather Radar
SUMMERVILLE, TX 78629

SAN MARCOS, TX 3 hourly weather forecast

weather forecast created  8:00 PM EDT  6/ 8/2026
Tuesday
9 JUN 2026
SUMMERVILLE, TX 78629 weather forecast Day 1, 0 hours 1 AM 77° 78° Mostly Cloudy 1%

0% Thunder
( 6% severe)
SSE   9 87% 73°
Low 75° SUMMERVILLE, TX 78629 weather forecast Day 1, 3 hours 4 AM 77° 78° Mostly Cloudy SSE   8 87% 73°
High 91° SUMMERVILLE, TX 78629 weather forecast Day 1, 6 hours 7 AM 76° 76° Mostly Cloudy 4%

0% Thunder
( 7% severe)
SSE   8 94% 74°

Mostly Cloudy



SUMMERVILLE, TX 78629 weather forecast Day 1, 9 hours 10 AM 81° 86° Mostly Cloudy SSE   10 79% 74°
SUMMERVILLE, TX 78629 weather forecast Day 1, 12 hours 1 PM 87° 94° Partly Cloudy 5%

0% Thunder
( 15% severe)
SSE   13 63% 73°
SUMMERVILLE, TX 78629 weather forecast Day 1, 15 hours 4 PM 91° 99° Partly Cloudy SE   13 54% 72°
SUMMERVILLE, TX 78629 weather forecast Day 1, 18 hours 7 PM 88° 95° Partly Cloudy 1%

0% Thunder
( 4% severe)
SE   15 59% 72°
SUMMERVILLE, TX 78629 weather forecast Day 1, 21 hours 10 PM 80° 84° Partly Cloudy SSE   12 77% 72°
Wednesday
10 JUN 2026
SUMMERVILLE, TX 78629 weather forecast Day 2, 0 hours 1 AM 77° 78° Partly Cloudy 3%

0% Thunder
( 6% severe)
SSE   9 85% 72°
Low 74° SUMMERVILLE, TX 78629 weather forecast Day 2, 3 hours 4 AM 76° 76° Mostly Cloudy S   8 90% 73°
High 92° SUMMERVILLE, TX 78629 weather forecast Day 2, 6 hours 7 AM 76° 76° Mostly Cloudy 3%

0% Thunder
( 11% severe)
SSE   8 90% 73°

Mostly Cloudy

Chance of Rain

SUMMERVILLE, TX 78629 weather forecast Day 2, 9 hours 10 AM 81° 86° Mostly Cloudy S   12 79% 74°
SUMMERVILLE, TX 78629 weather forecast Day 2, 12 hours 1 PM 88° 96° Mostly Cloudy 22%
RAIN
<.01 in
0% Thunder
( 24% severe)
S   14 61% 73°
SUMMERVILLE, TX 78629 weather forecast Day 2, 15 hours 4 PM 91° 101° Partly Cloudy SSE   15 58% 74°
SUMMERVILLE, TX 78629 weather forecast Day 2, 18 hours 7 PM 88° 97° Partly Cloudy 1%

0% Thunder
( 12% severe)
SSE   16 63% 74°
SUMMERVILLE, TX 78629 weather forecast Day 2, 21 hours 10 PM 81° 86° Partly Cloudy SSE   14 77% 73°

SAN MARCOS, TX extended weather forecast

Thursday
11 JUN 2026
Friday
12 JUN 2026
Saturday
13 JUN 2026
Sunday
14 JUN 2026
Monday
15 JUN 2026
Low 76° Low 75° Low 75° Low 74° Low 76°
High 93° High 94° High 93° High 92° High 89°
SUMMERVILLE, TX 78629 weather forecast Day 3 SUMMERVILLE, TX 78629 weather forecast Day 4 SUMMERVILLE, TX 78629 weather forecast Day 5 SUMMERVILLE, TX 78629 weather forecast Day 6 SUMMERVILLE, TX 78629 weather forecast Day 7
Partly Cloudy
16% Rain
Mostly Cloudy
24% Rain
Overcast
53% Rain
Overcast
53% Rain
Overcast
46% Rain
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