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

As of 3:24 pm CDT

Tonight

Mostly Clear Night Mostly Clear
--/41°
Rain drop 5%
Subtract

Night

41°
Mostly Clear Night
Rain drop
5%
S 14 mph

Mostly clear. Low 41F. Winds S at 10 to 20 mph.

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  • Humidity
    Humidity40%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise6:49 am
  • Moonset
    Moonset6:34 pm
  • Moon Phase - Day 28 Waning Crescent

Wed 18

Sunny Sunny
80°/50°
Rain drop 7%
Add

Day

80°
Sunny
Rain drop
7%
SSW 13 mph

Sunny skies. High near 80F. Winds SSW at 10 to 15 mph.

  • Humidity
    Humidity52%
  • UV index
    UV Index8 of 11
  • Sunrise
    Sunrise7:37 am
  • Sunset
    Sunset7:42 pm

Night

50°
Clear Night
Rain drop
8%
S 10 mph

A mostly clear sky. Low around 50F. Winds S at 10 to 15 mph.

  • Humidity
    Humidity67%
  • 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 8%
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Day

86°
Sunny
Rain drop
8%
SW 11 mph

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

  • Humidity
    Humidity54%
  • UV index
    UV Index8 of 11
  • Sunrise
    Sunrise7:36 am
  • Sunset
    Sunset7:42 pm

Night

54°
Clear Night
Rain drop
7%
SSW 11 mph

Clear skies. 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
91°/57°
Rain drop 7%
Add

Day

91°
Sunny
Rain drop
7%
SW 11 mph

A mainly sunny sky. Near record high temperatures. High 91F. Winds SW at 10 to 15 mph.

  • Humidity
    Humidity51%
  • UV index
    UV Index8 of 11
  • Sunrise
    Sunrise7:35 am
  • Sunset
    Sunset7:43 pm

Night

57°
Clear Night
Rain drop
5%
SSW 11 mph

Clear skies. Low 57F. Winds SSW at 10 to 15 mph.

  • Humidity
    Humidity58%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise8:23 am
  • Moonset
    Moonset9:48 pm
  • Moon Phase - Day 2 Waxing Crescent

Sat 21

Sunny Sunny
93°/60°
Rain drop 5%
Add

Day

93°
Sunny
Rain drop
5%
SSW 12 mph

Sunny. Near record high temperatures. High 93F. Winds SSW at 10 to 15 mph.

  • Humidity
    Humidity47%
  • 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 skies. Low near 60F. Winds S at 10 to 15 mph.

  • Humidity
    Humidity62%
  • 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%
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Day

92°
Sunny
Rain drop
6%
SSW 14 mph

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

  • Humidity
    Humidity47%
  • 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 near 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

Some clouds in the morning will give way to mainly sunny skies for the afternoon. High 89F. Winds S at 10 to 15 mph.

  • Humidity
    Humidity51%
  • UV index
    UV Index9 of 11
  • Sunrise
    Sunrise7:31 am
  • Sunset
    Sunset7:45 pm

Night

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

Clear to partly cloudy. Low 61F. Winds S at 10 to 15 mph.

  • Humidity
    Humidity65%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise10:28 am
  • Moonset
    Moonset12:08 am
  • Moon Phase - Day 5 Waxing Crescent

Tue 24

Partly Cloudy Day Partly Cloudy
87°/60°
Rain drop 8%
Add

Day

87°
Partly Cloudy Day
Rain drop
8%
SSW 12 mph

Partly cloudy. High 87F. Winds SSW at 10 to 15 mph.

  • Humidity
    Humidity53%
  • UV index
    UV Index9 of 11
  • Sunrise
    Sunrise7:30 am
  • Sunset
    Sunset7:45 pm

Night

60°
Partly Cloudy Night
Rain drop
19%
SSE 13 mph

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

  • Humidity
    Humidity63%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise11:24 am
  • Moonset
    Moonset1:18 am
  • Moon Phase - Day 6 Waxing Crescent

Wed 25

Partly Cloudy Day Partly Cloudy
89°/61°
Rain drop 18%
Add

Day

89°
Partly Cloudy Day
Rain drop
18%
S 13 mph

Sunshine and clouds mixed. High 89F. Winds S at 10 to 20 mph.

  • Humidity
    Humidity52%
  • UV index
    UV Index9 of 11
  • Sunrise
    Sunrise7:29 am
  • Sunset
    Sunset7:46 pm

Night

61°
Mostly Clear Night
Rain drop
20%
S 15 mph

Generally fair. Low 61F. Winds S at 10 to 20 mph.

  • Humidity
    Humidity67%
  • 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
90°/62°
Rain drop 20%
Add

Day

90°
Mostly Clear Day
Rain drop
20%
S 16 mph

A few passing clouds, otherwise generally sunny. High around 90F. Winds S at 10 to 20 mph.

  • Humidity
    Humidity52%
  • UV index
    UV Index9 of 11
  • Sunrise
    Sunrise7:28 am
  • Sunset
    Sunset7:46 pm

Night

62°
Mostly Clear Night
Rain drop
22%
SSE 16 mph

Partly cloudy. Low 62F. Winds SSE at 10 to 20 mph.

  • Humidity
    Humidity68%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise1:33 pm
  • Moonset
    Moonset3:22 am
  • Moon Phase - Day 8 Waxing Gibbous

Fri 27

Partly Cloudy Day Partly Cloudy
84°/54°
Rain drop 22%
Add

Day

84°
Partly Cloudy Day
Rain drop
22%
SSE 13 mph

Mostly cloudy skies early, then partly cloudy in the afternoon. High 84F. Winds SSE at 10 to 20 mph.

  • Humidity
    Humidity53%
  • UV index
    UV Index8 of 11
  • Sunrise
    Sunrise7:26 am
  • Sunset
    Sunset7:47 pm

Night

54°
Partly Cloudy Night
Rain drop
14%
NE 15 mph

Partly cloudy skies. Low 54F. Winds NE at 10 to 20 mph.

  • Humidity
    Humidity66%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise2:42 pm
  • Moonset
    Moonset4:11 am
  • Moon Phase - Day 9 Waxing Gibbous

Sat 28

Partly Cloudy Day Partly Cloudy
75°/56°
Rain drop 14%
Add

Day

75°
Partly Cloudy Day
Rain drop
14%
ENE 14 mph

Mostly cloudy skies early, then partly cloudy in the afternoon. High near 75F. Winds ENE at 10 to 20 mph.

  • Humidity
    Humidity61%
  • UV index
    UV Index8 of 11
  • Sunrise
    Sunrise7:25 am
  • Sunset
    Sunset7:48 pm

Night

56°
Partly Cloudy Night
Rain drop
22%
ESE 14 mph

Partly to mostly cloudy. Low 56F. Winds ESE at 10 to 20 mph.

  • Humidity
    Humidity71%
  • 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
84°/61°
Rain drop 22%
Add

Day

84°
Partly Cloudy Day
Rain drop
22%
SE 13 mph

Considerable clouds early. Some decrease in clouds later in the day. High 84F. Winds SE at 10 to 15 mph.

  • Humidity
    Humidity55%
  • UV index
    UV Index8 of 11
  • Sunrise
    Sunrise7:24 am
  • Sunset
    Sunset7:48 pm

Night

61°
Partly Cloudy Night
Rain drop
24%
SSE 13 mph

Partly cloudy early with increasing clouds overnight. Low 61F. Winds SSE at 10 to 20 mph.

  • Humidity
    Humidity68%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise4:50 pm
  • Moonset
    Moonset5:28 am
  • Moon Phase - Day 11 Waxing Gibbous

Mon 30

Mostly Cloudy Day Mostly Cloudy
86°/63°
Rain drop 24%
Add

Day

86°
Mostly Cloudy Day
Rain drop
24%
S 15 mph

Mainly cloudy. High 86F. Winds S at 10 to 20 mph.

  • Humidity
    Humidity57%
  • UV index
    UV Index7 of 11
  • Sunrise
    Sunrise7:23 am
  • Sunset
    Sunset7:49 pm

Night

63°
Scattered Showers Night
Rain drop
41%
SSE 15 mph

Mostly cloudy skies early with showers developing late. Low 63F. Winds SSE at 10 to 20 mph. Chance of rain 40%.

  • Humidity
    Humidity70%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise5:50 pm
  • Moonset
    Moonset6:00 am
  • Moon Phase - Day 12 Waxing Gibbous

Tue 31

Scattered Showers Day AM Showers
85°/62°
Rain drop 46%
Add

Day

85°
Scattered Showers Day
Rain drop
46%
S 16 mph

Showers in the morning with some clearing in the afternoon. High near 85F. Winds S at 10 to 20 mph. Chance of rain 50%.

  • Humidity
    Humidity60%
  • UV index
    UV Index6 of 11
  • Sunrise
    Sunrise7:22 am
  • Sunset
    Sunset7:50 pm

Night

62°
Showers
Rain drop
48%
SSE 16 mph

Cloudy with occasional showers. Low 62F. Winds SSE at 10 to 20 mph. Chance of rain 50%.

  • Humidity
    Humidity68%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise6:49 pm
  • Moonset
    Moonset6:29 am
  • Moon Phase - Day 13 Waxing Gibbous
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