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

As of 5:11 am CDT

Today

Sunny Sunny
73°/48°
Rain drop 1%
Subtract

Day

73°
Sunny
Rain drop
1%
NNE 14 mph

Abundant sunshine. High 73F. Winds NNE at 10 to 20 mph.

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  • Humidity
    Humidity47%
  • UV index
    UV Index9 of 11
  • Sunrise
    Sunrise7:14 am
  • Sunset
    Sunset7:53 pm

Night

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

Some clouds. Low 48F. Winds NE at 5 to 10 mph.

  • Humidity
    Humidity57%
  • 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
75°/53°
Rain drop 4%
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Day

75°
Partly Cloudy Day
Rain drop
4%
E 9 mph

Partly cloudy skies in the morning will give way to cloudy skies during the afternoon. High near 75F. Winds E at 5 to 10 mph.

  • Humidity
    Humidity42%
  • UV index
    UV Index7 of 11
  • Sunrise
    Sunrise7:13 am
  • Sunset
    Sunset7:53 pm

Night

53°
Partly Cloudy Night
Rain drop
11%
E 9 mph

A few clouds from time to time. Low 53F. Winds E at 5 to 10 mph.

  • Humidity
    Humidity60%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise12:33 am
  • Moonset
    Moonset10:30 am
  • Moon Phase - Day 20 Waning Gibbous

Wed 08

Mostly Cloudy Day Mostly Cloudy
79°/61°
Rain drop 8%
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Day

79°
Mostly Cloudy Day
Rain drop
8%
ESE 9 mph

Partly cloudy skies in the morning will give way to cloudy skies during the afternoon. High 79F. Winds ESE at 5 to 10 mph.

  • Humidity
    Humidity61%
  • UV index
    UV Index7 of 11
  • Sunrise
    Sunrise7:12 am
  • Sunset
    Sunset7:54 pm

Night

61°
Partly Cloudy Night
Rain drop
13%
SE 8 mph

Partly cloudy. Low 61F. Winds SE at 5 to 10 mph.

  • Humidity
    Humidity75%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise1:26 am
  • Moonset
    Moonset11:21 am
  • Moon Phase - Day 21 Waning Gibbous

Thu 09

Mostly Cloudy Day Mostly Cloudy
82°/64°
Rain drop 24%
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Day

82°
Mostly Cloudy Day
Rain drop
24%
SE 12 mph

Mainly cloudy. High 82F. Winds SE at 10 to 15 mph.

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

Night

64°
Scattered Showers Night
Rain drop
36%
SE 12 mph

Partly cloudy in the evening. Increasing clouds with periods of showers after midnight. Low 64F. Winds SE at 10 to 15 mph. Chance of rain 40%.

  • Humidity
    Humidity80%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise2:15 am
  • Moonset
    Moonset12:17 pm
  • Moon Phase - Day 21 Waning Gibbous

Fri 10

Scattered Thunderstorms Scattered Thunderstorms
78°/66°
Rain drop 54%
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Day

78°
Scattered Thunderstorms
Rain drop
54%
ESE 13 mph

Variable clouds with scattered thunderstorms. High 78F. Winds ESE at 10 to 15 mph. Chance of rain 50%.

  • Humidity
    Humidity75%
  • UV index
    UV Index7 of 11
  • Sunrise
    Sunrise7:10 am
  • Sunset
    Sunset7:55 pm

Night

66°
Showers
Rain drop
64%
SE 12 mph

Showers early becoming a steady light rain late. Low 66F. Winds SE at 10 to 15 mph. Chance of rain 60%.

  • Humidity
    Humidity84%
  • 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
76°/67°
Rain drop 59%
Add

Day

76°
Scattered Thunderstorms
Rain drop
59%
SE 16 mph

Showers early then scattered thunderstorms developing later in the day. High 76F. Winds SE at 10 to 20 mph. Chance of rain 60%.

  • Humidity
    Humidity81%
  • UV index
    UV Index6 of 11
  • Sunrise
    Sunrise7:08 am
  • Sunset
    Sunset7:56 pm

Night

67°
Scattered Thunderstorms Night
Rain drop
59%
SSE 15 mph

Scattered showers and thunderstorms. Low 67F. Winds SSE at 10 to 20 mph. Chance of rain 60%.

  • Humidity
    Humidity85%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise3:38 am
  • Moonset
    Moonset2:15 pm
  • Moon Phase - Day 23 Waning Crescent

Sun 12

Scattered Thunderstorms Scattered Thunderstorms
79°/69°
Rain drop 59%
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Day

79°
Scattered Thunderstorms
Rain drop
59%
S 16 mph

Scattered showers and thunderstorms. High 79F. Winds S at 10 to 20 mph. Chance of rain 60%.

  • Humidity
    Humidity80%
  • UV index
    UV Index6 of 11
  • Sunrise
    Sunrise7:07 am
  • Sunset
    Sunset7:57 pm

Night

69°
Scattered Thunderstorms Night
Rain drop
47%
SSE 16 mph

Scattered showers and thunderstorms. Low 69F. Winds SSE at 10 to 20 mph. Chance of rain 50%.

  • Humidity
    Humidity85%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise4:13 am
  • Moonset
    Moonset3:14 pm
  • Moon Phase - Day 24 Waning Crescent

Mon 13

Scattered Thunderstorms Scattered Thunderstorms
82°/70°
Rain drop 56%
Add

Day

82°
Scattered Thunderstorms
Rain drop
56%
S 16 mph

Mixed clouds and sun with scattered thunderstorms. High 82F. Winds S at 10 to 20 mph. Chance of rain 60%.

  • Humidity
    Humidity75%
  • UV index
    UV Index6 of 11
  • Sunrise
    Sunrise7:06 am
  • Sunset
    Sunset7:57 pm

Night

70°
Scattered Thunderstorms Night
Rain drop
39%
SSE 14 mph

Variably cloudy with scattered thunderstorms. Low around 70F. Winds SSE at 10 to 20 mph. Chance of rain 40%.

  • Humidity
    Humidity81%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise4:45 am
  • Moonset
    Moonset4:16 pm
  • Moon Phase - Day 25 Waning Crescent

Tue 14

Scattered Thunderstorms Scattered Thunderstorms
85°/68°
Rain drop 46%
Add

Day

85°
Scattered Thunderstorms
Rain drop
46%
S 15 mph

Variable clouds with scattered thunderstorms. High near 85F. Winds S at 10 to 20 mph. Chance of rain 50%.

  • Humidity
    Humidity69%
  • UV index
    UV Index6 of 11
  • Sunrise
    Sunrise7:05 am
  • Sunset
    Sunset7:58 pm

Night

68°
Scattered Thunderstorms Night
Rain drop
45%
SSE 13 mph

Scattered thunderstorms in the evening, then variable clouds overnight with more showers at times. Low 68F. Winds SSE at 10 to 15 mph. Chance of rain 50%.

  • Humidity
    Humidity78%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise5:15 am
  • Moonset
    Moonset5:17 pm
  • Moon Phase - Day 26 Waning Crescent

Wed 15

Scattered Thunderstorms Scattered Thunderstorms
82°/65°
Rain drop 47%
Add

Day

82°
Scattered Thunderstorms
Rain drop
47%
SE 15 mph

Scattered thunderstorms. High 82F. Winds SE at 10 to 20 mph. Chance of rain 50%.

  • Humidity
    Humidity69%
  • UV index
    UV Index6 of 11
  • Sunrise
    Sunrise7:04 am
  • Sunset
    Sunset7:58 pm

Night

65°
Scattered Thunderstorms Night
Rain drop
45%
SE 14 mph

Scattered thunderstorms in the evening, then variable clouds overnight with more showers at times. Low near 65F. Winds SE 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 AM Thunderstorms
81°/67°
Rain drop 41%
Add

Day

81°
Scattered Thunderstorms
Rain drop
41%
SSE 14 mph

Scattered thunderstorms in the morning, then mainly cloudy late. High 81F. Winds SSE at 10 to 20 mph. Chance of rain 40%.

  • Humidity
    Humidity72%
  • UV index
    UV Index8 of 11
  • Sunrise
    Sunrise7:03 am
  • Sunset
    Sunset7:59 pm

Night

67°
Scattered Showers Night
Rain drop
48%
SSE 13 mph

Partly cloudy in the evening. Increasing clouds with periods of showers after midnight. Low 67F. Winds SSE at 10 to 15 mph. Chance of rain 50%.

  • Humidity
    Humidity79%
  • 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 AM Showers
84°/67°
Rain drop 36%
Add

Day

84°
Scattered Showers Day
Rain drop
36%
SSE 16 mph

A shower or two around the area in the morning, then partly cloudy in the afternoon. High 84F. Winds SSE at 10 to 20 mph. Chance of rain 40%.

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

Night

67°
Scattered Showers Night
Rain drop
40%
SSE 15 mph

Partly cloudy in the evening. Increasing clouds with periods of showers after midnight. Low 67F. Winds SSE at 10 to 20 mph. Chance of rain 40%.

  • Humidity
    Humidity77%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise6:53 am
  • Moonset
    Moonset8:37 pm
  • Moon Phase - Day 0 New Moon

Sat 18

Scattered Showers Day AM Showers
87°/67°
Rain drop 39%
Add

Day

87°
Scattered Showers Day
Rain drop
39%
SSE 16 mph

Showers in the morning with some clearing in the afternoon. High 87F. Winds SSE at 10 to 20 mph. Chance of rain 40%.

  • Humidity
    Humidity65%
  • UV index
    UV Index8 of 11
  • Sunrise
    Sunrise7:01 am
  • Sunset
    Sunset8:00 pm

Night

67°
Scattered Showers Night
Rain drop
32%
SSE 15 mph

Mostly cloudy skies with a few showers late. Low 67F. Winds SSE at 10 to 20 mph. Chance of rain 30%.

  • Humidity
    Humidity75%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise7:32 am
  • Moonset
    Moonset9:49 pm
  • Moon Phase - Day 1 Waxing Crescent

Sun 19

Scattered Showers Day AM Showers
87°/67°
Rain drop 39%
Add

Day

87°
Scattered Showers Day
Rain drop
39%
SSE 17 mph

Showers in the morning, then partly cloudy in the afternoon. High 87F. Winds SSE at 10 to 20 mph. Chance of rain 40%.

  • Humidity
    Humidity64%
  • UV index
    UV Index8 of 11
  • Sunrise
    Sunrise7:00 am
  • Sunset
    Sunset8:01 pm

Night

67°
Scattered Showers Night
Rain drop
43%
SSE 16 mph

Partly cloudy in the evening. Increasing clouds with periods of showers after midnight. Low 67F. Winds SSE at 10 to 20 mph. Chance of rain 40%.

  • Humidity
    Humidity74%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise8:19 am
  • Moonset
    Moonset11:03 pm
  • Moon Phase - Day 2 Waxing Crescent

Mon 20

Scattered Thunderstorms Scattered Thunderstorms
87°/68°
Rain drop 46%
Add

Day

87°
Scattered Thunderstorms
Rain drop
46%
SSE 15 mph

A few showers in the morning with scattered thunderstorms arriving in the afternoon. High 87F. Winds SSE at 10 to 20 mph. Chance of rain 50%.

  • Humidity
    Humidity63%
  • UV index
    UV Index8 of 11
  • Sunrise
    Sunrise6:59 am
  • Sunset
    Sunset8:02 pm

Night

68°
Scattered Thunderstorms Night
Rain drop
41%
SSE 15 mph

Scattered thunderstorms in the evening. Cloudy skies overnight. Low 68F. Winds SSE at 10 to 20 mph. Chance of rain 40%.

  • Humidity
    Humidity75%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise9:14 am
  • Moonset
    Moonset--
  • Moon Phase - Day 3 Waxing Crescent
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