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Northeast weather to feel more like Thanksgiving than Memorial Day. See the temp forecast. Chevron right

San Marcos, TX

76°F
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San Marcos

Texas

76°
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San Marcos, TX Weather
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Chevron right

12 PM

78°
RealFeel® 85°
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 7%
Chevron down
Cloudy

RealFeel Shade™80°

WindS 8 mph

Air QualityExcellent

Max UV Index3.9 (Moderate)

Wind Gusts13 mph

Humidity74%

Indoor Humidity74% (Very Humid)

Dew Point69° F

AccuLumen Brightness Index™2 (Dark)

Cloud Cover90%

Visibility10 mi

Cloud Ceiling7100 ft

1 PM

82°
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 11%
Chevron down
Mostly cloudy

RealFeel Shade™85°

Heat Index86°

WindS 8 mph

Air QualityExcellent

Max UV Index5.1 (Moderate)

Wind Gusts15 mph

Humidity68%

Indoor Humidity68% (Very Humid)

Dew Point71° F

AccuLumen Brightness Index™4 (Dull)

Cloud Cover80%

Visibility10 mi

Cloud Ceiling7100 ft

2 PM

86°
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 19%
Chevron down
Intermittent clouds

RealFeel Shade™89°

Heat Index91°

WindS 8 mph

Air QualityExcellent

Max UV Index5.6 (High)

Wind Gusts14 mph

Humidity60%

Indoor Humidity60% (Very Humid)

Dew Point71° F

AccuLumen Brightness Index™6 (Medium)

Cloud Cover70%

Visibility10 mi

Cloud Ceiling7100 ft

3 PM

88°
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 19%
Chevron down
Intermittent clouds

RealFeel Shade™90°

Heat Index93°

WindS 8 mph

Air QualityExcellent

Max UV Index4.4 (Moderate)

Wind Gusts13 mph

Humidity56%

Indoor Humidity56% (Very Humid)

Dew Point70° F

AccuLumen Brightness Index™6 (Medium)

Cloud Cover65%

Visibility10 mi

Cloud Ceiling7100 ft

4 PM

87°
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 24%
Chevron down
Intermittent clouds

RealFeel Shade™89°

Heat Index92°

WindS 8 mph

Air QualityExcellent

Max UV Index3.1 (Moderate)

Wind Gusts12 mph

Humidity58%

Indoor Humidity58% (Very Humid)

Dew Point70° F

AccuLumen Brightness Index™6 (Medium)

Cloud Cover69%

Visibility10 mi

Cloud Ceiling14700 ft

5 PM

86°
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 47%
Chevron down
Mostly cloudy

RealFeel Shade™88°

Heat Index91°

WindSSE 9 mph

Air QualityExcellent

Max UV Index2.1 (Low)

Wind Gusts10 mph

Humidity59%

Indoor Humidity59% (Very Humid)

Dew Point70° F

AccuLumen Brightness Index™4 (Dull)

Cloud Cover79%

Visibility10 mi

Cloud Ceiling22400 ft

6 PM

81°
RealFeel® 85°
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 51%
Chevron down
Thunderstorms

RealFeel Shade™85°

Heat Index87°

WindSSE 9 mph

Air QualityExcellent

Max UV Index0.5 (Low)

Wind Gusts10 mph

Humidity82%

Indoor Humidity82% (Extremely Humid)

Dew Point75° F

AccuLumen Brightness Index™3 (Dull)

Cloud Cover88%

Rain0.15 in

Visibility4 mi

Cloud Ceiling4000 ft

7 PM

80°
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 47%
Chevron down
Cloudy
alerts

Flood Watch

7:00 PM Friday - 7:00 PM Monday

RealFeel Shade™83°

Heat Index83°

WindSE 9 mph

Air QualityExcellent

Max UV Index0.5 (Low)

Wind Gusts10 mph

Humidity74%

Indoor Humidity74% (Very Humid)

Dew Point71° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover91%

Visibility10 mi

Cloud Ceiling30000 ft

8 PM

79°
RealFeel® 82°
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 47%
Chevron down
Cloudy
alerts

Flood Watch

7:00 PM Friday - 7:00 PM Monday

RealFeel Shade™82°

Heat Index80°

WindSE 8 mph

Air QualityExcellent

Max UV Index0.0 (Low)

Wind Gusts9 mph

Humidity80%

Indoor Humidity80% (Extremely Humid)

Dew Point72° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover91%

Visibility10 mi

Cloud Ceiling30000 ft

9 PM

77°
RealFeel® 78°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 51%
Chevron down
Thunderstorms
alerts

Flood Watch

7:00 PM Friday - 7:00 PM Monday

WindSE 8 mph

Air QualityExcellent

Wind Gusts9 mph

Humidity84%

Indoor Humidity84% (Extremely Humid)

Dew Point72° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover90%

Rain0.04 in

Visibility6 mi

Cloud Ceiling4000 ft

10 PM

74°
RealFeel® 78°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 47%
Chevron down
Cloudy
alerts

Flood Watch

7:00 PM Friday - 7:00 PM Monday

WindSE 8 mph

Air QualityExcellent

Wind Gusts8 mph

Humidity92%

Indoor Humidity92% (Extremely Humid)

Dew Point72° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover91%

Visibility10 mi

Cloud Ceiling4000 ft

11 PM

73°
RealFeel® 77°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 34%
Chevron down
Cloudy
alerts

Flood Watch

7:00 PM Friday - 7:00 PM Monday

WindSSE 8 mph

Air QualityExcellent

Wind Gusts8 mph

Humidity95%

Indoor Humidity95% (Extremely Humid)

Dew Point72° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover94%

Visibility10 mi

Cloud Ceiling19800 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 78° with a RealFeel® of 85°, cloudy with a 7% 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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