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

As of 10:43 pm CDT

Tonight

Partly Cloudy Night Partly Cloudy
--/54°
Rain drop 6%
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Night

54°
Partly Cloudy Night
Rain drop
6%
ESE 4 mph

Some passing clouds. Low 54F. Winds light and variable.

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  • Humidity
    Humidity68%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise3:47 pm
  • Moonset
    Moonset4:53 am
  • Moon Phase - Day 10 Waxing Gibbous

Sun 29

Mostly Clear Day Mostly Sunny
86°/64°
Rain drop 7%
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Day

86°
Mostly Clear Day
Rain drop
7%
S 14 mph

Sunshine along with some cloudy intervals. Much warmer. High 86F. Winds S at 10 to 20 mph.

  • Humidity
    Humidity57%
  • UV index
    UV Index9 of 11
  • Sunrise
    Sunrise7:24 am
  • Sunset
    Sunset7:48 pm

Night

64°
Partly Cloudy Night
Rain drop
18%
SSE 15 mph

Clear during the evening followed by cloudy skies overnight. Low 64F. Winds SSE at 10 to 20 mph.

  • Humidity
    Humidity73%
  • 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 AM Clouds/PM Sun
88°/66°
Rain drop 24%
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Day

88°
Partly Cloudy Day
Rain drop
24%
S 17 mph

Cloudy skies early will become partly cloudy later in the day. High 88F. Winds S at 10 to 20 mph.

  • Humidity
    Humidity57%
  • UV index
    UV Index9 of 11
  • Sunrise
    Sunrise7:23 am
  • Sunset
    Sunset7:49 pm

Night

66°
Partly Cloudy Night
Rain drop
24%
SSE 18 mph

Mostly clear skies in the evening then becoming cloudy overnight. Low 66F. Winds SSE at 15 to 25 mph.

  • Humidity
    Humidity73%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise5:50 pm
  • Moonset
    Moonset6:00 am
  • Moon Phase - Day 12 Waxing Gibbous

Tue 31

Partly Cloudy Day AM Clouds/PM Sun
89°/68°
Rain drop 17%
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Day

89°
Partly Cloudy Day
Rain drop
17%
S 19 mph

Cloudy skies early, then partly cloudy in the afternoon. High 89F. Winds S at 15 to 25 mph. Higher wind gusts possible.

  • Humidity
    Humidity58%
  • UV index
    UV Index7 of 11
  • Sunrise
    Sunrise7:21 am
  • Sunset
    Sunset7:49 pm

Night

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

Partly cloudy skies during the evening will give way to cloudy skies overnight. Low 68F. Winds SSE at 15 to 25 mph.

  • Humidity
    Humidity74%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise6:49 pm
  • Moonset
    Moonset6:29 am
  • Moon Phase - Day 13 Waxing Gibbous

Wed 01

Mostly Cloudy Day Mostly Cloudy
90°/67°
Rain drop 16%
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Day

90°
Mostly Cloudy Day
Rain drop
16%
S 16 mph

Mostly cloudy skies. High near 90F. Winds S at 10 to 20 mph.

  • Humidity
    Humidity59%
  • UV index
    UV Index7 of 11
  • Sunrise
    Sunrise7:20 am
  • Sunset
    Sunset7:50 pm

Night

67°
Showers
Rain drop
35%
SSE 18 mph

Cloudy with occasional showers. Low 67F. Winds SSE at 15 to 25 mph. Chance of rain 40%.

  • Humidity
    Humidity74%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise7:45 pm
  • Moonset
    Moonset6:57 am
  • Moon Phase - Day 14 Full Moon

Thu 02

Scattered Showers Day AM Showers
85°/68°
Rain drop 51%
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Day

85°
Scattered Showers Day
Rain drop
51%
S 13 mph

Showers in the morning, then partly cloudy in the afternoon. High near 85F. Winds S at 10 to 15 mph. Chance of rain 50%.

  • Humidity
    Humidity67%
  • UV index
    UV Index8 of 11
  • Sunrise
    Sunrise7:19 am
  • Sunset
    Sunset7:51 pm

Night

68°
Partly Cloudy Night
Rain drop
24%
SSE 13 mph

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

  • Humidity
    Humidity78%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise8:43 pm
  • Moonset
    Moonset7:24 am
  • Moon Phase - Day 15 Full Moon

Fri 03

Partly Cloudy Day Partly Cloudy
89°/68°
Rain drop 24%
Add

Day

89°
Partly Cloudy Day
Rain drop
24%
SSE 16 mph

Mostly cloudy skies early will become partly cloudy later in the day. High 89F. Winds SSE at 10 to 20 mph.

  • Humidity
    Humidity63%
  • UV index
    UV Index8 of 11
  • Sunrise
    Sunrise7:18 am
  • Sunset
    Sunset7:51 pm

Night

68°
Scattered Showers Night
Rain drop
31%
SSE 16 mph

Partly cloudy during the evening. A few showers developing later during the night. Low 68F. Winds SSE at 10 to 20 mph. Chance of rain 30%.

  • Humidity
    Humidity74%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise9:40 pm
  • Moonset
    Moonset7:54 am
  • Moon Phase - Day 16 Waning Gibbous

Sat 04

Thunderstorms Thunderstorms
80°/56°
Rain drop 67%
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Day

80°
Thunderstorms
Rain drop
67%
SW 14 mph

Scattered thunderstorms in the morning becoming more widespread in the afternoon. Storms may contain strong gusty winds. High around 80F. S winds shifting to NW at 10 to 20 mph. Chance of rain 70%.

  • Humidity
    Humidity65%
  • UV index
    UV Index6 of 11
  • Sunrise
    Sunrise7:17 am
  • Sunset
    Sunset7:52 pm

Night

56°
Scattered Thunderstorms Night
Rain drop
56%
NNE 16 mph

Mostly cloudy with scattered thunderstorms mainly before midnight. Storms may contain strong gusty winds. Low 56F. Winds NNE at 10 to 20 mph. Chance of rain 60%.

  • Humidity
    Humidity61%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise10:38 pm
  • Moonset
    Moonset8:27 am
  • Moon Phase - Day 17 Waning Gibbous

Sun 05

Partly Cloudy Day Partly Cloudy
72°/50°
Rain drop 22%
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Day

72°
Partly Cloudy Day
Rain drop
22%
NNE 17 mph

Partly to mostly cloudy. High 72F. Winds NNE at 10 to 20 mph.

  • Humidity
    Humidity46%
  • UV index
    UV Index8 of 11
  • Sunrise
    Sunrise7:16 am
  • Sunset
    Sunset7:52 pm

Night

50°
Partly Cloudy Night
Rain drop
19%
NNE 13 mph

Partly to mostly cloudy. Low around 50F. Winds NNE at 10 to 20 mph.

  • Humidity
    Humidity59%
  • 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
76°/51°
Rain drop 20%
Add

Day

76°
Partly Cloudy Day
Rain drop
20%
ENE 12 mph

Partly cloudy. High 76F. Winds ENE at 10 to 15 mph.

  • Humidity
    Humidity48%
  • UV index
    UV Index9 of 11
  • Sunrise
    Sunrise7:14 am
  • Sunset
    Sunset7:53 pm

Night

51°
Scattered Showers Night
Rain drop
33%
SE 12 mph

Partly cloudy during the evening. A few showers developing later during the night. Low 51F. Winds SE at 10 to 15 mph. Chance of rain 30%.

  • Humidity
    Humidity64%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise--
  • Moonset
    Moonset9:44 am
  • Moon Phase - Day 19 Waning Gibbous

Tue 07

Partly Cloudy Day Partly Cloudy
77°/56°
Rain drop 24%
Add

Day

77°
Partly Cloudy Day
Rain drop
24%
SE 11 mph

Partly cloudy skies. High 77F. Winds SE at 10 to 15 mph.

  • Humidity
    Humidity57%
  • UV index
    UV Index8 of 11
  • Sunrise
    Sunrise7:13 am
  • Sunset
    Sunset7:54 pm

Night

56°
Partly Cloudy Night
Rain drop
13%
SSE 12 mph

Partly cloudy skies. Low 56F. Winds SSE at 10 to 15 mph.

  • Humidity
    Humidity71%
  • 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
81°/60°
Rain drop 15%
Add

Day

81°
Partly Cloudy Day
Rain drop
15%
SSE 11 mph

Intervals of clouds and sunshine in the morning with more clouds for later in the day. High 81F. Winds SSE at 10 to 15 mph.

  • Humidity
    Humidity63%
  • UV index
    UV Index7 of 11
  • Sunrise
    Sunrise7:12 am
  • Sunset
    Sunset7:54 pm

Night

60°
Mostly Cloudy Night
Rain drop
24%
SSE 12 mph

Considerable cloudiness. Low near 60F. Winds SSE at 10 to 15 mph.

  • Humidity
    Humidity72%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise1:25 am
  • Moonset
    Moonset11:21 am
  • Moon Phase - Day 21 Waning Gibbous

Thu 09

Mostly Cloudy Day Mostly Cloudy
83°/61°
Rain drop 24%
Add

Day

83°
Mostly Cloudy Day
Rain drop
24%
SSE 12 mph

Mostly cloudy skies. High 83F. Winds SSE at 10 to 15 mph.

  • Humidity
    Humidity62%
  • UV index
    UV Index6 of 11
  • Sunrise
    Sunrise7:11 am
  • Sunset
    Sunset7:55 pm

Night

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

Mainly cloudy. Low 61F. Winds SSE at 10 to 15 mph.

  • Humidity
    Humidity71%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise2:15 am
  • Moonset
    Moonset12:17 pm
  • Moon Phase - Day 21 Waning Gibbous

Fri 10

Scattered Showers Day AM Showers
83°/62°
Rain drop 37%
Add

Day

83°
Scattered Showers Day
Rain drop
37%
SSE 13 mph

Showers in the morning, then cloudy in the afternoon. High 83F. Winds SSE at 10 to 15 mph. Chance of rain 40%.

  • Humidity
    Humidity61%
  • UV index
    UV Index6 of 11
  • Sunrise
    Sunrise7:10 am
  • Sunset
    Sunset7:55 pm

Night

62°
Showers
Rain drop
43%
SSE 14 mph

Cloudy with occasional showers. Low 62F. Winds SSE at 10 to 20 mph. Chance of rain 40%.

  • Humidity
    Humidity73%
  • 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
83°/63°
Rain drop 42%
Add

Day

83°
Scattered Thunderstorms
Rain drop
42%
SSE 14 mph

Showers in the morning with isolated thunderstorms arriving in the afternoon. High 83F. Winds SSE at 10 to 20 mph. Chance of rain 40%.

  • Humidity
    Humidity63%
  • UV index
    UV Index6 of 11
  • Sunrise
    Sunrise7:09 am
  • Sunset
    Sunset7:56 pm

Night

63°
Showers
Rain drop
46%
SSE 14 mph

Cloudy with showers. Low 63F. Winds SSE at 10 to 20 mph. Chance of rain 50%.

  • Humidity
    Humidity73%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise3:37 am
  • Moonset
    Moonset2:15 pm
  • Moon Phase - Day 23 Waning Crescent
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