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

As of 8:47 pm CDT

Tonight

Mostly Cloudy Night Mostly Cloudy
--/55°
Rain drop 2%
Subtract

Night

55°
Mostly Cloudy Night
Rain drop
2%
NNE 16 mph

Partly cloudy early followed by cloudy skies overnight. Low around 55F. Winds NNE at 10 to 20 mph.

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  • Humidity
    Humidity69%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise10:38 pm
  • Moonset
    Moonset8:27 am
  • Moon Phase - Day 17 Waning Gibbous

Sun 05

Cloudy Cloudy
67°/53°
Rain drop 4%
Add

Day

67°
Cloudy
Rain drop
4%
NNE 19 mph

Cloudy. High 67F. Winds NNE at 15 to 25 mph.

  • Humidity
    Humidity50%
  • UV index
    UV Index6 of 11
  • Sunrise
    Sunrise7:16 am
  • Sunset
    Sunset7:52 pm

Night

53°
Cloudy
Rain drop
10%
NNE 14 mph

Overcast. Low 53F. Winds NNE at 10 to 20 mph.

  • Humidity
    Humidity57%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise11:36 pm
  • Moonset
    Moonset9:03 am
  • Moon Phase - Day 18 Waning Gibbous

Mon 06

Partly Cloudy Day Partly Cloudy
73°/48°
Rain drop 1%
Add

Day

73°
Partly Cloudy Day
Rain drop
1%
NE 12 mph

Some clouds in the morning will give way to mainly sunny skies for the afternoon. High 73F. Winds NE at 10 to 15 mph.

  • Humidity
    Humidity44%
  • UV index
    UV Index9 of 11
  • Sunrise
    Sunrise7:15 am
  • Sunset
    Sunset7:53 pm

Night

48°
Partly Cloudy Night
Rain drop
3%
NE 10 mph

A few clouds. Low 48F. Winds NE at 10 to 15 mph.

  • Humidity
    Humidity56%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise--
  • Moonset
    Moonset9:44 am
  • Moon Phase - Day 19 Waning Gibbous

Tue 07

Cloudy Cloudy
74°/52°
Rain drop 14%
Add

Day

74°
Cloudy
Rain drop
14%
E 8 mph

Overcast. High 74F. Winds E at 5 to 10 mph.

  • Humidity
    Humidity48%
  • UV index
    UV Index8 of 11
  • Sunrise
    Sunrise7:13 am
  • Sunset
    Sunset7:54 pm

Night

52°
Partly Cloudy Night
Rain drop
13%
E 9 mph

Cloudy skies early, followed by partial clearing. Low 52F. Winds E at 5 to 10 mph.

  • Humidity
    Humidity67%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise12:33 am
  • Moonset
    Moonset10:31 am
  • Moon Phase - Day 20 Waning Gibbous

Wed 08

Partly Cloudy Day Partly Cloudy
80°/60°
Rain drop 7%
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Day

80°
Partly Cloudy Day
Rain drop
7%
ESE 10 mph

Sunshine and clouds mixed. High near 80F. Winds ESE at 5 to 10 mph.

  • Humidity
    Humidity61%
  • UV index
    UV Index9 of 11
  • Sunrise
    Sunrise7:12 am
  • Sunset
    Sunset7:54 pm

Night

60°
Mostly Cloudy Night
Rain drop
20%
SE 10 mph

Partly cloudy skies during the evening will give way to cloudy skies overnight. Low around 60F. Winds SE at 10 to 15 mph.

  • Humidity
    Humidity76%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise1:25 am
  • Moonset
    Moonset11:21 am
  • Moon Phase - Day 21 Waning Gibbous

Thu 09

Partly Cloudy Day AM Clouds/PM Sun
81°/64°
Rain drop 24%
Add

Day

81°
Partly Cloudy Day
Rain drop
24%
SE 11 mph

Cloudy skies early, followed by partial clearing. High 81F. Winds SE at 10 to 15 mph.

  • Humidity
    Humidity70%
  • UV index
    UV Index6 of 11
  • Sunrise
    Sunrise7:11 am
  • Sunset
    Sunset7:55 pm

Night

64°
Scattered Showers Night
Rain drop
43%
SE 12 mph

Partly cloudy skies early will give way to occasional showers later during the night. Low 64F. Winds SE at 10 to 15 mph. Chance of rain 40%.

  • Humidity
    Humidity81%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise2:15 am
  • Moonset
    Moonset12:17 pm
  • Moon Phase - Day 21 Waning Gibbous

Fri 10

Thunderstorms Thunderstorms
79°/66°
Rain drop 60%
Add

Day

79°
Thunderstorms
Rain drop
60%
SE 13 mph

Rain showers in the morning with numerous thunderstorms developing in the afternoon. High 79F. Winds SE at 10 to 20 mph. Chance of rain 60%.

  • Humidity
    Humidity73%
  • UV index
    UV Index7 of 11
  • Sunrise
    Sunrise7:10 am
  • Sunset
    Sunset7:55 pm

Night

66°
Showers
Rain drop
45%
SE 14 mph

Cloudy with showers. Low 66F. Winds SE at 10 to 20 mph. Chance of rain 50%.

  • Humidity
    Humidity85%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise2:59 am
  • Moonset
    Moonset1:15 pm
  • Moon Phase - Day 22 Last Quarter

Sat 11

Scattered Thunderstorms Scattered Thunderstorms
77°/67°
Rain drop 59%
Add

Day

77°
Scattered Thunderstorms
Rain drop
59%
SE 15 mph

Scattered showers and thunderstorms. High 77F. Winds SE at 10 to 20 mph. Chance of rain 60%.

  • Humidity
    Humidity81%
  • UV index
    UV Index4 of 11
  • Sunrise
    Sunrise7:09 am
  • Sunset
    Sunset7:56 pm

Night

67°
Scattered Thunderstorms Night
Rain drop
59%
SSE 16 mph

Variable clouds with scattered thunderstorms. Low 67F. Winds SSE at 10 to 20 mph. Chance of rain 60%.

  • Humidity
    Humidity85%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise3:37 am
  • Moonset
    Moonset2:15 pm
  • Moon Phase - Day 23 Waning Crescent

Sun 12

Scattered Thunderstorms Scattered Thunderstorms
81°/67°
Rain drop 59%
Add

Day

81°
Scattered Thunderstorms
Rain drop
59%
SSE 13 mph

Mixed clouds and sun with scattered thunderstorms. High 81F. Winds SSE at 10 to 15 mph. Chance of rain 60%.

  • Humidity
    Humidity76%
  • UV index
    UV Index6 of 11
  • Sunrise
    Sunrise7:08 am
  • Sunset
    Sunset7:57 pm

Night

67°
Scattered Thunderstorms Night
Rain drop
59%
SSE 13 mph

Scattered thunderstorms in the evening, then variable clouds overnight with more showers at times. Low 67F. Winds SSE at 10 to 20 mph. Chance of rain 60%.

  • Humidity
    Humidity83%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise4:13 am
  • Moonset
    Moonset3:15 pm
  • Moon Phase - Day 24 Waning Crescent

Mon 13

Scattered Thunderstorms Scattered Thunderstorms
85°/67°
Rain drop 59%
Add

Day

85°
Scattered Thunderstorms
Rain drop
59%
S 13 mph

Scattered showers and thunderstorms. High around 85F. Winds S at 10 to 15 mph. Chance of rain 60%.

  • Humidity
    Humidity71%
  • UV index
    UV Index6 of 11
  • Sunrise
    Sunrise7:07 am
  • Sunset
    Sunset7:57 pm

Night

67°
Scattered Thunderstorms Night
Rain drop
46%
S 14 mph

Partly cloudy with an isolated thunderstorm possible after midnight. Low 67F. Winds S at 10 to 20 mph. Chance of rain 50%.

  • Humidity
    Humidity82%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise4:45 am
  • Moonset
    Moonset4:16 pm
  • Moon Phase - Day 25 Waning Crescent

Tue 14

Partly Cloudy Day AM Clouds/PM Sun
87°/66°
Rain drop 24%
Add

Day

87°
Partly Cloudy Day
Rain drop
24%
S 13 mph

Cloudy early with partial sunshine expected late. High 87F. Winds S at 10 to 20 mph.

  • Humidity
    Humidity68%
  • UV index
    UV Index9 of 11
  • Sunrise
    Sunrise7:06 am
  • Sunset
    Sunset7:58 pm

Night

66°
Thunderstorms
Rain drop
37%
SSE 13 mph

Partly cloudy skies early. Scattered thunderstorms developing later at night. Low 66F. Winds SSE at 10 to 20 mph. Chance of rain 40%.

  • Humidity
    Humidity77%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise5:15 am
  • Moonset
    Moonset5:17 pm
  • Moon Phase - Day 26 Waning Crescent

Wed 15

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

Day

83°
Scattered Thunderstorms
Rain drop
45%
SSE 16 mph

Scattered thunderstorms in the morning, then partly cloudy late. High 83F. Winds SSE at 10 to 20 mph. Chance of rain 50%.

  • Humidity
    Humidity68%
  • UV index
    UV Index9 of 11
  • Sunrise
    Sunrise7:04 am
  • Sunset
    Sunset7:58 pm

Night

63°
Showers
Rain drop
52%
ESE 16 mph

Considerable cloudiness with occasional rain showers. Low 63F. Winds ESE at 10 to 20 mph. Chance of rain 50%.

  • Humidity
    Humidity82%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise5:46 am
  • Moonset
    Moonset6:21 pm
  • Moon Phase - Day 27 Waning Crescent

Thu 16

Scattered Thunderstorms Scattered Thunderstorms
79°/61°
Rain drop 46%
Add

Day

79°
Scattered Thunderstorms
Rain drop
46%
ENE 14 mph

Mixed clouds and sun with scattered thunderstorms. High 79F. Winds ENE at 10 to 20 mph. Chance of rain 50%.

  • Humidity
    Humidity72%
  • UV index
    UV Index7 of 11
  • Sunrise
    Sunrise7:03 am
  • Sunset
    Sunset7:59 pm

Night

61°
Scattered Showers Night
Rain drop
30%
ESE 14 mph

Mostly cloudy skies with a few showers late. Low 61F. Winds ESE at 10 to 20 mph. Chance of rain 30%.

  • Humidity
    Humidity80%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise6:18 am
  • Moonset
    Moonset7:27 pm
  • Moon Phase - Day 28 Waning Crescent

Fri 17

Scattered Showers Day PM Showers
84°/66°
Rain drop 31%
Add

Day

84°
Scattered Showers Day
Rain drop
31%
SE 12 mph

Cloudy skies early. A few showers developing later in the day. High 84F. Winds SE at 10 to 15 mph. Chance of rain 30%.

  • Humidity
    Humidity67%
  • UV index
    UV Index8 of 11
  • Sunrise
    Sunrise7:02 am
  • Sunset
    Sunset8:00 pm

Night

66°
Showers
Rain drop
39%
SE 13 mph

Cloudy with showers. Low 66F. Winds SE at 10 to 15 mph. Chance of rain 40%.

  • Humidity
    Humidity76%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise6:53 am
  • Moonset
    Moonset8:37 pm
  • Moon Phase - Day 0 New Moon

Sat 18

Showers Showers
86°/67°
Rain drop 36%
Add

Day

86°
Showers
Rain drop
36%
SSE 14 mph

Showers early becoming less numerous later in the day. High 86F. Winds SSE at 10 to 20 mph. Chance of rain 40%.

  • Humidity
    Humidity66%
  • UV index
    UV Index8 of 11
  • Sunrise
    Sunrise7:01 am
  • Sunset
    Sunset8:00 pm

Night

67°
Scattered Showers Night
Rain drop
33%
SSE 14 mph

Partly cloudy skies early followed by mostly cloudy skies and a few showers later at night. Low 67F. Winds SSE at 10 to 20 mph. Chance of rain 30%.

  • Humidity
    Humidity75%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise7:33 am
  • Moonset
    Moonset9:49 pm
  • Moon Phase - Day 1 Waxing Crescent
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