10-Day Weather Forecast for San Marcos, Texas 78666 - The Weather Channel | weather.com
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10 Day Weather-

As of 6:24 am CDT

Today

Mostly Clear Day Mostly Sunny
78°/49°
Rain drop 2%
Subtract

Day

78°
Mostly Clear Day
Rain drop
2%
S 12 mph

A good deal of sunshine. High 78F. Winds S at 10 to 15 mph.

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Southwest Will Bake With Highs In 90s, 100s


  • Humidity
    Humidity51%
  • UV index
    UV Index8 of 11
  • Sunrise
    Sunrise7:37 am
  • Sunset
    Sunset7:41 pm

Night

49°
Mostly Clear Night
Rain drop
12%
S 10 mph

Mostly clear. Low 49F. Winds S at 5 to 10 mph.

  • Humidity
    Humidity69%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise7:19 am
  • Moonset
    Moonset7:36 pm
  • Moon Phase - Day 29 New Moon

Thu 19

Sunny Sunny
86°/54°
Rain drop 11%
Add

Day

86°
Sunny
Rain drop
11%
SW 11 mph

Sunny skies. High 86F. Winds SW at 10 to 15 mph.

  • Humidity
    Humidity55%
  • UV index
    UV Index8 of 11
  • Sunrise
    Sunrise7:36 am
  • Sunset
    Sunset7:42 pm

Night

54°
Clear Night
Rain drop
6%
SSW 10 mph

Clear. Low 54F. Winds SSW at 10 to 15 mph.

  • Humidity
    Humidity62%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise7:50 am
  • Moonset
    Moonset8:41 pm
  • Moon Phase - Day 1 Waxing Crescent

Fri 20

Sunny Sunny
92°/58°
Rain drop 6%
Add

Day

92°
Sunny
Rain drop
6%
SW 11 mph

Sunny. Near record high temperatures. High 92F. Winds SW at 10 to 15 mph.

  • Humidity
    Humidity48%
  • UV index
    UV Index8 of 11
  • Sunrise
    Sunrise7:35 am
  • Sunset
    Sunset7:43 pm

Night

58°
Clear Night
Rain drop
6%
SSW 12 mph

Clear skies. Low 58F. Winds SSW at 10 to 15 mph.

  • Humidity
    Humidity58%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise8:22 am
  • Moonset
    Moonset9:47 pm
  • Moon Phase - Day 2 Waxing Crescent

Sat 21

Sunny Sunny
94°/60°
Rain drop 6%
Add

Day

94°
Sunny
Rain drop
6%
SSW 11 mph

Sunny. Near record high temperatures. High 94F. Winds SSW at 10 to 15 mph.

  • Humidity
    Humidity46%
  • UV index
    UV Index8 of 11
  • Sunrise
    Sunrise7:34 am
  • Sunset
    Sunset7:43 pm

Night

60°
Clear Night
Rain drop
6%
S 12 mph

Clear. Low near 60F. Winds S at 10 to 15 mph.

  • Humidity
    Humidity56%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise8:58 am
  • Moonset
    Moonset10:57 pm
  • Moon Phase - Day 3 Waxing Crescent

Sun 22

Sunny Sunny
92°/60°
Rain drop 6%
Add

Day

92°
Sunny
Rain drop
6%
SSW 14 mph

Sunny. Continued hot. High 92F. Winds SSW at 10 to 20 mph.

  • Humidity
    Humidity46%
  • UV index
    UV Index8 of 11
  • Sunrise
    Sunrise7:32 am
  • Sunset
    Sunset7:44 pm

Night

60°
Clear Night
Rain drop
8%
S 14 mph

Clear skies. Low around 60F. Winds S at 10 to 20 mph.

  • Humidity
    Humidity63%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise9:39 am
  • Moonset
    Moonset--
  • Moon Phase - Day 4 Waxing Crescent

Mon 23

Partly Cloudy Day Partly Cloudy
89°/61°
Rain drop 8%
Add

Day

89°
Partly Cloudy Day
Rain drop
8%
S 11 mph

Partly cloudy skies. High 89F. Winds S at 10 to 15 mph.

  • Humidity
    Humidity50%
  • UV index
    UV Index8 of 11
  • Sunrise
    Sunrise7:31 am
  • Sunset
    Sunset7:45 pm

Night

61°
Mostly Clear Night
Rain drop
9%
S 12 mph

Clear skies with a few passing clouds. Low 61F. Winds S at 10 to 15 mph.

  • Humidity
    Humidity60%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise10:28 am
  • Moonset
    Moonset12:08 am
  • Moon Phase - Day 5 Waxing Crescent

Tue 24

Mostly Clear Day Mostly Sunny
84°/60°
Rain drop 6%
Add

Day

84°
Mostly Clear Day
Rain drop
6%
SSW 13 mph

Sun and a few passing clouds. High 84F. W winds shifting to SSE at 10 to 15 mph.

  • Humidity
    Humidity49%
  • UV index
    UV Index9 of 11
  • Sunrise
    Sunrise7:30 am
  • Sunset
    Sunset7:45 pm

Night

60°
Partly Cloudy Night
Rain drop
19%
SSE 12 mph

Partly cloudy skies. Low near 60F. Winds SSE at 10 to 15 mph.

  • Humidity
    Humidity63%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise11:23 am
  • Moonset
    Moonset1:18 am
  • Moon Phase - Day 6 Waxing Crescent

Wed 25

Partly Cloudy Day Partly Cloudy
89°/60°
Rain drop 19%
Add

Day

89°
Partly Cloudy Day
Rain drop
19%
S 14 mph

Partly cloudy skies. High 89F. Winds S at 10 to 20 mph.

  • Humidity
    Humidity50%
  • UV index
    UV Index9 of 11
  • Sunrise
    Sunrise7:29 am
  • Sunset
    Sunset7:46 pm

Night

60°
Mostly Clear Night
Rain drop
8%
S 14 mph

A few clouds overnight. Low near 60F. Winds S at 10 to 20 mph.

  • Humidity
    Humidity63%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise12:27 pm
  • Moonset
    Moonset2:24 am
  • Moon Phase - Day 7 First Quarter

Thu 26

Mostly Clear Day Mostly Sunny
91°/60°
Rain drop 7%
Add

Day

91°
Mostly Clear Day
Rain drop
7%
S 16 mph

Sunshine along with some cloudy intervals. High 91F. Winds S at 10 to 20 mph.

  • Humidity
    Humidity49%
  • UV index
    UV Index9 of 11
  • Sunrise
    Sunrise7:28 am
  • Sunset
    Sunset7:46 pm

Night

60°
Mostly Clear Night
Rain drop
10%
SSE 17 mph

Mostly clear skies. Low around 60F. Winds SSE at 15 to 25 mph.

  • Humidity
    Humidity60%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise1:33 pm
  • Moonset
    Moonset3:22 am
  • Moon Phase - Day 8 Waxing Gibbous

Fri 27

Mostly Clear Day Mostly Sunny
83°/52°
Rain drop 6%
Add

Day

83°
Mostly Clear Day
Rain drop
6%
SE 15 mph

Sunshine along with some cloudy intervals. High 83F. Winds SE at 10 to 20 mph.

  • Humidity
    Humidity44%
  • UV index
    UV Index9 of 11
  • Sunrise
    Sunrise7:26 am
  • Sunset
    Sunset7:47 pm

Night

52°
Partly Cloudy Night
Rain drop
16%
E 15 mph

A few clouds. Low 52F. Winds E at 10 to 20 mph.

  • Humidity
    Humidity54%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise2:41 pm
  • Moonset
    Moonset4:11 am
  • Moon Phase - Day 9 Waxing Gibbous

Sat 28

Partly Cloudy Day Partly Cloudy
78°/55°
Rain drop 16%
Add

Day

78°
Partly Cloudy Day
Rain drop
16%
ESE 14 mph

Partly cloudy. High 78F. Winds ESE at 10 to 20 mph.

  • Humidity
    Humidity45%
  • UV index
    UV Index9 of 11
  • Sunrise
    Sunrise7:25 am
  • Sunset
    Sunset7:48 pm

Night

55°
Partly Cloudy Night
Rain drop
13%
SE 14 mph

A few clouds from time to time. Low near 55F. Winds SE at 10 to 20 mph.

  • Humidity
    Humidity60%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise3:47 pm
  • Moonset
    Moonset4:53 am
  • Moon Phase - Day 10 Waxing Gibbous

Sun 29

Partly Cloudy Day Partly Cloudy
83°/60°
Rain drop 19%
Add

Day

83°
Partly Cloudy Day
Rain drop
19%
SSE 14 mph

Intervals of clouds and sunshine. High 83F. Winds SSE at 10 to 20 mph.

  • Humidity
    Humidity52%
  • UV index
    UV Index9 of 11
  • Sunrise
    Sunrise7:24 am
  • Sunset
    Sunset7:48 pm

Night

60°
Partly Cloudy Night
Rain drop
16%
SSE 14 mph

Partly cloudy. Low near 60F. Winds SSE at 10 to 20 mph.

  • Humidity
    Humidity65%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise4:50 pm
  • Moonset
    Moonset5:28 am
  • Moon Phase - Day 11 Waxing Gibbous

Mon 30

Partly Cloudy Day Partly Cloudy
85°/63°
Rain drop 18%
Add

Day

85°
Partly Cloudy Day
Rain drop
18%
S 15 mph

Intervals of clouds and sunshine. High around 85F. Winds S at 10 to 20 mph.

  • Humidity
    Humidity55%
  • UV index
    UV Index9 of 11
  • Sunrise
    Sunrise7:23 am
  • Sunset
    Sunset7:49 pm

Night

63°
Scattered Showers Night
Rain drop
46%
SSE 16 mph

Partly cloudy skies early followed by increasing clouds with showers developing later at night. Low 63F. Winds SSE at 10 to 20 mph. Chance of rain 50%.

  • Humidity
    Humidity69%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise5:50 pm
  • Moonset
    Moonset6:00 am
  • Moon Phase - Day 12 Waxing Gibbous

Tue 31

Showers Showers
85°/64°
Rain drop 48%
Add

Day

85°
Showers
Rain drop
48%
S 16 mph

Rain showers in the morning becoming more intermittent in the afternoon. High around 85F. Winds S at 10 to 20 mph. Chance of rain 50%.

  • Humidity
    Humidity61%
  • UV index
    UV Index8 of 11
  • Sunrise
    Sunrise7:22 am
  • Sunset
    Sunset7:49 pm

Night

64°
Scattered Showers Night
Rain drop
43%
SSE 16 mph

Partly cloudy skies early followed by increasing clouds with showers developing later at night. Low 64F. Winds SSE at 10 to 20 mph. Chance of rain 40%.

  • Humidity
    Humidity73%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise6:49 pm
  • Moonset
    Moonset6:29 am
  • Moon Phase - Day 13 Waxing Gibbous

Wed 01

Scattered Thunderstorms Scattered Thunderstorms
83°/63°
Rain drop 45%
Add

Day

83°
Scattered Thunderstorms
Rain drop
45%
SSE 16 mph

Rain showers in the morning with scattered thunderstorms arriving in the afternoon. High 83F. Winds SSE at 10 to 20 mph. Chance of rain 50%.

  • Humidity
    Humidity62%
  • UV index
    UV Index8 of 11
  • Sunrise
    Sunrise7:20 am
  • Sunset
    Sunset7:50 pm

Night

63°
Scattered Thunderstorms Night
Rain drop
48%
SSE 16 mph

Variable clouds with scattered thunderstorms. Low 63F. Winds SSE at 10 to 20 mph. Chance of rain 50%.

  • Humidity
    Humidity73%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise7:45 pm
  • Moonset
    Moonset6:57 am
  • Moon Phase - Day 14 Full Moon
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