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San Marcos, TX

76°F
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San Marcos

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76°
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San Marcos, TX Weather
Today WinterCast Local {stormName} Tracker Hourly 10-Day Radar MinuteCast® Monthly Air Quality Health & Activities

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7 AM

77°
RealFeel® 83°
Very Warm
RealFeel Guide
Very Warm
82° to 89°
Older adults, infants, and those with sensitive medical conditions should minimize outdoor activity, especially in the sunshine.
LEARN MORE
rain drop 0%
Chevron down
Partly sunny

RealFeel Shade™83°

WindSW 7 mph

Air QualityFair

Max UV Index0.7 (Low)

Wind Gusts9 mph

Humidity88%

Indoor Humidity88% (Extremely Humid)

Dew Point73° F

AccuLumen Brightness Index™4 (Dull)

Cloud Cover42%

Visibility10 mi

Cloud Ceiling34000 ft

8 AM

79°
RealFeel® 88°
Very Warm
RealFeel Guide
Very Warm
82° to 89°
Older adults, infants, and those with sensitive medical conditions should minimize outdoor activity, especially in the sunshine.
LEARN MORE
rain drop 5%
Chevron down
Mostly sunny

RealFeel Shade™85°

Heat Index81°

WindSW 7 mph

Air QualityFair

Max UV Index1.8 (Low)

Wind Gusts8 mph

Humidity83%

Indoor Humidity83% (Extremely Humid)

Dew Point74° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover25%

Visibility10 mi

Cloud Ceiling30000 ft

9 AM

82°
RealFeel® 93°
Hot
RealFeel Guide
Hot
90° to 100°
Caution advised. Possible danger of dehydration, heat stroke, heat exhaustion and heat cramps if outside for extended periods, and especially while doing strenuous activities.
LEARN MORE
rain drop 5%
Chevron down
Mostly sunny

RealFeel Shade™88°

Heat Index88°

WindSW 7 mph

Air QualityFair

Max UV Index3.1 (Moderate)

Wind Gusts8 mph

Humidity78%

Indoor Humidity78% (Extremely Humid)

Dew Point74° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover25%

Visibility10 mi

Cloud Ceiling30000 ft

10 AM

85°
RealFeel® 97°
Hot
RealFeel Guide
Hot
90° to 100°
Caution advised. Possible danger of dehydration, heat stroke, heat exhaustion and heat cramps if outside for extended periods, and especially while doing strenuous activities.
LEARN MORE
rain drop 6%
Chevron down
Mostly sunny

RealFeel Shade™91°

Heat Index92°

WindSW 7 mph

Air QualityFair

Max UV Index4.7 (Moderate)

Wind Gusts9 mph

Humidity71%

Indoor Humidity71% (Extremely Humid)

Dew Point74° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover25%

Visibility10 mi

Cloud Ceiling30000 ft

11 AM

88°
RealFeel® 102°
Very Hot
RealFeel Guide
Very Hot
101° to 107°
Caution advised. Danger of dehydration, heat stroke, heat exhaustion and heat cramps if outside for extended periods, and especially while doing strenuous activities.
LEARN MORE
rain drop 7%
Chevron down
Mostly sunny

RealFeel Shade™94°

Heat Index96°

WindSW 6 mph

Air QualityFair

Max UV Index7.6 (Very High)

Wind Gusts8 mph

Humidity62%

Indoor Humidity62% (Extremely Humid)

Dew Point74° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover25%

Visibility10 mi

Cloud Ceiling30000 ft

12 PM

91°
RealFeel® 107°
Very Hot
RealFeel Guide
Very Hot
101° to 107°
Caution advised. Danger of dehydration, heat stroke, heat exhaustion and heat cramps if outside for extended periods, and especially while doing strenuous activities.
LEARN MORE
rain drop 7%
Chevron down
Mostly sunny

RealFeel Shade™96°

Heat Index99°

WindWSW 6 mph

Air QualityFair

Max UV Index10.6 (Extreme)

Wind Gusts8 mph

Humidity54%

Indoor Humidity54% (Extremely Humid)

Dew Point73° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover25%

Visibility10 mi

Cloud Ceiling30000 ft

1 PM

94°
RealFeel® 109°
Dangerous Heat
RealFeel Guide
Dangerous Heat
108° to 115°
Caution advised. Danger of dehydration, heat stroke, heat exhaustion and heat cramps if outside for extended periods, and especially while doing strenuous activities.
LEARN MORE
rain drop 11%
Chevron down
Mostly sunny

RealFeel Shade™97°

Heat Index101°

WindWSW 6 mph

Air QualityFair

Max UV Index11.5 (Extreme)

Wind Gusts7 mph

Humidity49%

Indoor Humidity49% (Extremely Humid)

Dew Point72° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover25%

Visibility10 mi

Cloud Ceiling30000 ft

2 PM

95°
RealFeel® 109°
Dangerous Heat
RealFeel Guide
Dangerous Heat
108° to 115°
Caution advised. Danger of dehydration, heat stroke, heat exhaustion and heat cramps if outside for extended periods, and especially while doing strenuous activities.
LEARN MORE
rain drop 19%
Chevron down
Mostly sunny

RealFeel Shade™99°

Heat Index103°

WindNW 6 mph

Air QualityFair

Max UV Index10.6 (Extreme)

Wind Gusts7 mph

Humidity45%

Indoor Humidity45% (Very Humid)

Dew Point71° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover25%

Visibility10 mi

Cloud Ceiling30000 ft

3 PM

96°
RealFeel® 108°
Dangerous Heat
RealFeel Guide
Dangerous Heat
108° to 115°
Caution advised. Danger of dehydration, heat stroke, heat exhaustion and heat cramps if outside for extended periods, and especially while doing strenuous activities.
LEARN MORE
rain drop 19%
Chevron down
Mostly sunny

RealFeel Shade™100°

Heat Index104°

WindN 7 mph

Air QualityFair

Max UV Index7.6 (Very High)

Wind Gusts8 mph

Humidity43%

Indoor Humidity43% (Very Humid)

Dew Point71° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover25%

Visibility10 mi

Cloud Ceiling30000 ft

4 PM

98°
RealFeel® 106°
Very Hot
RealFeel Guide
Very Hot
101° to 107°
Caution advised. Danger of dehydration, heat stroke, heat exhaustion and heat cramps if outside for extended periods, and especially while doing strenuous activities.
LEARN MORE
rain drop 24%
Chevron down
Mostly sunny

RealFeel Shade™101°

Heat Index105°

WindN 7 mph

Air QualityFair

Max UV Index4.7 (Moderate)

Wind Gusts8 mph

Humidity40%

Indoor Humidity40% (Very Humid)

Dew Point70° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover25%

Visibility10 mi

Cloud Ceiling30000 ft

5 PM

97°
RealFeel® 103°
Very Hot
RealFeel Guide
Very Hot
101° to 107°
Caution advised. Danger of dehydration, heat stroke, heat exhaustion and heat cramps if outside for extended periods, and especially while doing strenuous activities.
LEARN MORE
rain drop 47%
Chevron down
Mostly sunny

RealFeel Shade™99°

Heat Index103°

WindN 7 mph

Air QualityFair

Max UV Index3.1 (Moderate)

Wind Gusts8 mph

Humidity42%

Indoor Humidity42% (Very Humid)

Dew Point70° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover25%

Visibility10 mi

Cloud Ceiling30000 ft

6 PM

94°
RealFeel® 97°
Hot
RealFeel Guide
Hot
90° to 100°
Caution advised. Possible danger of dehydration, heat stroke, heat exhaustion and heat cramps if outside for extended periods, and especially while doing strenuous activities.
LEARN MORE
rain drop 51%
Chevron down
Partly sunny w/ t-storms

RealFeel Shade™94°

Heat Index101°

WindNNW 7 mph

Air QualityFair

Max UV Index1.8 (Low)

Wind Gusts8 mph

Humidity48%

Indoor Humidity48% (Very Humid)

Dew Point71° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover25%

Rain0.04 in

Visibility6 mi

Cloud Ceiling30000 ft

7 PM

92°
RealFeel® 96°
Hot
RealFeel Guide
Hot
90° to 100°
Caution advised. Possible danger of dehydration, heat stroke, heat exhaustion and heat cramps if outside for extended periods, and especially while doing strenuous activities.
LEARN MORE
rain drop 47%
Chevron down
Mostly sunny

RealFeel Shade™96°

Heat Index98°

WindNNW 7 mph

Air QualityFair

Max UV Index0.7 (Low)

Wind Gusts8 mph

Humidity50%

Indoor Humidity50% (Very Humid)

Dew Point71° F

AccuLumen Brightness Index™4 (Dull)

Cloud Cover25%

Visibility10 mi

Cloud Ceiling30000 ft

8 PM

91°
RealFeel® 95°
Hot
RealFeel Guide
Hot
90° to 100°
Caution advised. Possible danger of dehydration, heat stroke, heat exhaustion and heat cramps if outside for extended periods, and especially while doing strenuous activities.
LEARN MORE
rain drop 47%
Chevron down
Cloudy

RealFeel Shade™95°

Heat Index98°

WindNW 6 mph

Air QualityFair

Max UV Index0.0 (Low)

Wind Gusts7 mph

Humidity52%

Indoor Humidity52% (Very Humid)

Dew Point71° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover100%

Visibility10 mi

Cloud Ceiling30000 ft

9 PM

89°
RealFeel® 91°
Hot
RealFeel Guide
Hot
90° to 100°
Caution advised. Possible danger of dehydration, heat stroke, heat exhaustion and heat cramps if outside for extended periods, and especially while doing strenuous activities.
LEARN MORE
rain drop 51%
Chevron down
Thunderstorms

Heat Index96°

WindNW 5 mph

Air QualityFair

Wind Gusts6 mph

Humidity58%

Indoor Humidity58% (Extremely Humid)

Dew Point72° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover96%

Rain0.04 in

Visibility6 mi

Cloud Ceiling4000 ft

10 PM

87°
RealFeel® 92°
Hot
RealFeel Guide
Hot
90° to 100°
Caution advised. Possible danger of dehydration, heat stroke, heat exhaustion and heat cramps if outside for extended periods, and especially while doing strenuous activities.
LEARN MORE
rain drop 47%
Chevron down
Mostly cloudy

Heat Index93°

WindWNW 5 mph

Air QualityFair

Wind Gusts6 mph

Humidity61%

Indoor Humidity61% (Extremely Humid)

Dew Point72° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover75%

Visibility10 mi

Cloud Ceiling30000 ft

11 PM

84°
RealFeel® 89°
Very Warm
RealFeel Guide
Very Warm
82° to 89°
Older adults, infants, and those with sensitive medical conditions should minimize outdoor activity, especially in the sunshine.
LEARN MORE
rain drop 34%
Chevron down
Partly cloudy

Heat Index89°

WindW 5 mph

Air QualityFair

Wind Gusts6 mph

Humidity68%

Indoor Humidity68% (Extremely Humid)

Dew Point72° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover46%

Visibility10 mi

Cloud Ceiling30000 ft

Hourly Weather Forecast for San Marcos

AccuWeather's hourly forecast for San Marcos provides hour-by-hour temperatures, RealFeel® Temperature, and precipitation probability through the next 10 days. The current hour shows 77° with a RealFeel® of 83°, partly sunny with a 0% chance of precipitation. Each hourly forecast includes wind speed, humidity, air quality, UV index, and the AccuLumen Brightness Index™, AccuWeather's measure of perceived outdoor light intensity. Forecasts are generated by proprietary systems developed by AccuWeather meteorologists since 1962.

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Weather Near San Marcos:

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  • Cedar Park, TX
  • Round Rock, TX
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