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

As of 6:01 am CDT

Today

Partly Cloudy Day AM Clouds/PM Sun
88°/66°
Rain drop 15%
Subtract

Day

88°
Partly Cloudy Day
Rain drop
15%
S 16 mph

Cloudy skies early, followed by partial clearing. High 88F. Winds S at 10 to 20 mph.

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  • Humidity
    Humidity61%
  • UV index
    UV Index9 of 11
  • Sunrise
    Sunrise7:23 am
  • Sunset
    Sunset7:49 pm

Night

66°
Mostly Cloudy Night
Rain drop
23%
SSE 17 mph

Partly cloudy this evening, then becoming cloudy after midnight. Low 66F. Winds SSE at 15 to 25 mph. Higher wind gusts possible.

  • Humidity
    Humidity74%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise5:50 pm
  • Moonset
    Moonset6:00 am
  • Moon Phase - Day 12 Waxing Gibbous

Tue 31

Mostly Cloudy Day Mostly Cloudy
88°/68°
Rain drop 24%
Add

Day

88°
Mostly Cloudy Day
Rain drop
24%
S 18 mph

Considerable cloudiness. High 88F. Winds S at 15 to 25 mph. Higher wind gusts possible.

  • Humidity
    Humidity60%
  • UV index
    UV Index8 of 11
  • Sunrise
    Sunrise7:21 am
  • Sunset
    Sunset7:49 pm

Night

68°
Mostly Cloudy Night
Rain drop
22%
SSE 17 mph

Partly cloudy skies in the evening, then becoming cloudy overnight. Low 68F. Winds SSE at 10 to 20 mph.

  • Humidity
    Humidity76%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise6:48 pm
  • Moonset
    Moonset6:29 am
  • Moon Phase - Day 13 Waxing Gibbous

Wed 01

Partly Cloudy Day AM Clouds/PM Sun
89°/68°
Rain drop 24%
Add

Day

89°
Partly Cloudy Day
Rain drop
24%
S 19 mph

Cloudy skies early, followed by partial clearing. High 89F. Winds S at 15 to 25 mph.

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

Night

68°
Scattered Showers Night
Rain drop
55%
SSE 19 mph

Partly cloudy in the evening. Increasing clouds with periods of showers after midnight. Low 68F. Winds SSE at 15 to 25 mph. Chance of rain 60%.

  • Humidity
    Humidity75%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise7:45 pm
  • Moonset
    Moonset6:57 am
  • Moon Phase - Day 14 Full Moon

Thu 02

Rain Rain
83°/68°
Rain drop 63%
Add

Day

83°
Rain
Rain drop
63%
S 13 mph

Rain early...then remaining cloudy with showers in the afternoon. Thunder possible. High 83F. Winds S at 10 to 20 mph. Chance of rain 60%.

  • Humidity
    Humidity72%
  • UV index
    UV Index7 of 11
  • Sunrise
    Sunrise7:19 am
  • Sunset
    Sunset7:51 pm

Night

68°
Partly Cloudy Night
Rain drop
24%
SSE 12 mph

Partly cloudy early with increasing clouds overnight. Low 68F. Winds SSE at 10 to 15 mph.

  • Humidity
    Humidity79%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise8:43 pm
  • Moonset
    Moonset7:24 am
  • Moon Phase - Day 15 Full Moon

Fri 03

Scattered Showers Day AM Showers
87°/68°
Rain drop 34%
Add

Day

87°
Scattered Showers Day
Rain drop
34%
SSE 17 mph

A few showers early with mostly cloudy conditions later in the day. High 87F. Winds SSE at 10 to 20 mph. Chance of rain 30%.

  • Humidity
    Humidity66%
  • UV index
    UV Index7 of 11
  • Sunrise
    Sunrise7:18 am
  • Sunset
    Sunset7:51 pm

Night

68°
Thunderstorms
Rain drop
42%
SSE 17 mph

Partly to mostly cloudy with scattered showers and thunderstorms developing late at night. Low 68F. Winds SSE at 15 to 25 mph. Chance of rain 40%.

  • Humidity
    Humidity77%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise9:40 pm
  • Moonset
    Moonset7:54 am
  • Moon Phase - Day 16 Waning Gibbous

Sat 04

Thunderstorms Thunderstorms
75°/57°
Rain drop 81%
Add

Day

75°
Thunderstorms
Rain drop
81%
SSE 15 mph

Thunderstorms likely. Storms may contain strong gusty winds. High near 75F. SSE winds shifting to NNE at 10 to 20 mph. Chance of rain 80%.

  • Humidity
    Humidity73%
  • UV index
    UV Index5 of 11
  • Sunrise
    Sunrise7:17 am
  • Sunset
    Sunset7:52 pm

Night

57°
Thunderstorms
Rain drop
74%
NNE 16 mph

Thunderstorms in the evening, then cloudy with rain likely overnight. Storms may contain strong gusty winds. Low 57F. Winds NNE at 10 to 20 mph. Chance of rain 70%.

  • Humidity
    Humidity76%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise10:39 pm
  • Moonset
    Moonset8:27 am
  • Moon Phase - Day 17 Waning Gibbous

Sun 05

Showers Showers
68°/49°
Rain drop 48%
Add

Day

68°
Showers
Rain drop
48%
NNE 15 mph

Showers early becoming less numerous later in the day. High 68F. Winds NNE at 10 to 20 mph. Chance of rain 50%.

  • Humidity
    Humidity58%
  • UV index
    UV Index6 of 11
  • Sunrise
    Sunrise7:15 am
  • Sunset
    Sunset7:52 pm

Night

49°
Partly Cloudy Night
Rain drop
24%
NNE 12 mph

Cloudy skies early will become partly cloudy later at night. Low 49F. Winds NNE at 10 to 15 mph.

  • Humidity
    Humidity66%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise11:36 pm
  • Moonset
    Moonset9:02 am
  • Moon Phase - Day 18 Waning Gibbous

Mon 06

Partly Cloudy Day Partly Cloudy
72°/51°
Rain drop 22%
Add

Day

72°
Partly Cloudy Day
Rain drop
22%
NE 9 mph

Intervals of clouds and sunshine. High 72F. Winds NE at 5 to 10 mph.

  • Humidity
    Humidity55%
  • UV index
    UV Index9 of 11
  • Sunrise
    Sunrise7:14 am
  • Sunset
    Sunset7:53 pm

Night

51°
Partly Cloudy Night
Rain drop
22%
NE 9 mph

A few clouds from time to time. Low 51F. Winds NE at 5 to 10 mph.

  • Humidity
    Humidity69%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise--
  • Moonset
    Moonset9:43 am
  • Moon Phase - Day 19 Waning Gibbous

Tue 07

Partly Cloudy Day Partly Cloudy
76°/54°
Rain drop 17%
Add

Day

76°
Partly Cloudy Day
Rain drop
17%
E 9 mph

Partly cloudy. High 76F. Winds E at 5 to 10 mph.

  • Humidity
    Humidity60%
  • UV index
    UV Index9 of 11
  • Sunrise
    Sunrise7:13 am
  • Sunset
    Sunset7:54 pm

Night

54°
Partly Cloudy Night
Rain drop
18%
SE 9 mph

A few clouds. Low 54F. Winds SE at 5 to 10 mph.

  • Humidity
    Humidity70%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise12:33 am
  • Moonset
    Moonset10:30 am
  • Moon Phase - Day 20 Waning Gibbous

Wed 08

Partly Cloudy Day Partly Cloudy
82°/59°
Rain drop 13%
Add

Day

82°
Partly Cloudy Day
Rain drop
13%
SE 10 mph

Intervals of clouds and sunshine. High 82F. Winds SE at 5 to 10 mph.

  • Humidity
    Humidity60%
  • UV index
    UV Index9 of 11
  • Sunrise
    Sunrise7:12 am
  • Sunset
    Sunset7:54 pm

Night

59°
Partly Cloudy Night
Rain drop
24%
SSE 10 mph

A few clouds. Low 59F. Winds SSE at 10 to 15 mph.

  • Humidity
    Humidity72%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise1:26 am
  • Moonset
    Moonset11:21 am
  • Moon Phase - Day 21 Waning Gibbous

Thu 09

Partly Cloudy Day Partly Cloudy
82°/61°
Rain drop 24%
Add

Day

82°
Partly Cloudy Day
Rain drop
24%
SSE 11 mph

Mostly cloudy skies early will become partly cloudy later in the day. High 82F. Winds SSE at 10 to 15 mph.

  • Humidity
    Humidity65%
  • UV index
    UV Index7 of 11
  • Sunrise
    Sunrise7:11 am
  • Sunset
    Sunset7:55 pm

Night

61°
Scattered Showers Night
Rain drop
32%
SSE 12 mph

Partly cloudy skies early giving way to a few showers after midnight. Low 61F. Winds SSE at 10 to 15 mph. Chance of rain 30%.

  • Humidity
    Humidity76%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise2:15 am
  • Moonset
    Moonset12:17 pm
  • Moon Phase - Day 21 Waning Gibbous

Fri 10

Showers Showers
81°/61°
Rain drop 37%
Add

Day

81°
Showers
Rain drop
37%
SSE 13 mph

Considerable cloudiness with occasional rain showers. High 81F. Winds SSE at 10 to 20 mph. Chance of rain 40%.

  • Humidity
    Humidity66%
  • UV index
    UV Index9 of 11
  • Sunrise
    Sunrise7:10 am
  • Sunset
    Sunset7:55 pm

Night

61°
Showers
Rain drop
46%
SSE 14 mph

Overcast with showers at times. Low 61F. Winds SSE at 10 to 20 mph. Chance of rain 50%.

  • Humidity
    Humidity74%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise2:59 am
  • Moonset
    Moonset1:15 pm
  • Moon Phase - Day 22 Last Quarter

Sat 11

Showers Showers
81°/61°
Rain drop 51%
Add

Day

81°
Showers
Rain drop
51%
SSE 13 mph

Cloudy with showers. High 81F. Winds SSE at 10 to 15 mph. Chance of rain 50%.

  • Humidity
    Humidity64%
  • UV index
    UV Index7 of 11
  • Sunrise
    Sunrise7:09 am
  • Sunset
    Sunset7:56 pm

Night

61°
Showers
Rain drop
47%
SSE 13 mph

Overcast with showers at times. Low 61F. Winds SSE at 10 to 15 mph. Chance of rain 50%.

  • Humidity
    Humidity76%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise3:38 am
  • Moonset
    Moonset2:15 pm
  • Moon Phase - Day 23 Waning Crescent

Sun 12

Showers Showers
81°/59°
Rain drop 51%
Add

Day

81°
Showers
Rain drop
51%
SSE 11 mph

Cloudy with showers. High 81F. Winds SSE at 10 to 15 mph. Chance of rain 50%.

  • Humidity
    Humidity66%
  • UV index
    UV Index9 of 11
  • Sunrise
    Sunrise7:08 am
  • Sunset
    Sunset7:57 pm

Night

59°
Showers
Rain drop
42%
SSE 12 mph

Considerable cloudiness with occasional rain showers. Low 59F. Winds SSE at 10 to 15 mph. Chance of rain 40%.

  • Humidity
    Humidity81%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise4:13 am
  • Moonset
    Moonset3:15 pm
  • Moon Phase - Day 24 Waning Crescent

Mon 13

Showers Showers
81°/59°
Rain drop 43%
Add

Day

81°
Showers
Rain drop
43%
SSE 13 mph

Rain showers in the morning becoming more intermittent in the afternoon. High 81F. Winds SSE at 10 to 15 mph. Chance of rain 40%.

  • Humidity
    Humidity69%
  • UV index
    UV Index9 of 11
  • Sunrise
    Sunrise7:06 am
  • Sunset
    Sunset7:57 pm

Night

59°
Scattered Showers Night
Rain drop
39%
SSE 13 mph

Partly cloudy in the evening. Increasing clouds with periods of showers after midnight. Low 59F. Winds SSE at 10 to 15 mph. Chance of rain 40%.

  • Humidity
    Humidity79%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise4:45 am
  • Moonset
    Moonset4:16 pm
  • Moon Phase - Day 25 Waning Crescent
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