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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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Hourly

10-Day Radar MinuteCast® Monthly Air Quality Health & Activities

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3 PM

94°

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.

48%

Thunderstorms

RealFeel Shade™99°

Heat Index104°

WindSSE 8 mph

Air QualityFair

Max UV Index2.7 (Moderate)

Wind Gusts9 mph

Humidity51%

Indoor Humidity51% (Extremely Humid)

Dew Point74° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover97%

Visibility10 mi

Cloud Ceiling14700 ft

4 PM

92°

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.

56%

Thunderstorms

RealFeel Shade™96°

Heat Index103°

WindSSE 8 mph

Air QualityFair

Max UV Index1.0 (Low)

Wind Gusts10 mph

Humidity56%

Indoor Humidity56% (Extremely Humid)

Dew Point75° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover98%

Rain0.06 in

Visibility5 mi

Cloud Ceiling4000 ft

5 PM

90°

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.

51%

Thunderstorms

RealFeel Shade™95°

Heat Index101°

WindSSE 8 mph

Air QualityFair

Max UV Index0.8 (Low)

Wind Gusts10 mph

Humidity60%

Indoor Humidity60% (Extremely Humid)

Dew Point75° F

AccuLumen Brightness Index™2 (Dark)

Cloud Cover94%

Rain0.06 in

Visibility5 mi

Cloud Ceiling4000 ft

6 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.

47%

Cloudy

RealFeel Shade™95°

Heat Index97°

WindSSE 8 mph

Air QualityFair

Max UV Index0.9 (Low)

Wind Gusts9 mph

Humidity61%

Indoor Humidity61% (Extremely Humid)

Dew Point74° F

AccuLumen Brightness Index™2 (Dark)

Cloud Cover90%

Visibility10 mi

Cloud Ceiling14700 ft

7 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.

47%

Mostly cloudy

RealFeel Shade™93°

Heat Index95°

WindSSE 8 mph

Air QualityFair

Max UV Index0.4 (Low)

Wind Gusts9 mph

Humidity65%

Indoor Humidity65% (Extremely Humid)

Dew Point74° F

AccuLumen Brightness Index™2 (Dark)

Cloud Cover88%

Visibility10 mi

Cloud Ceiling10400 ft

8 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.

51%

Mostly cloudy w/ t-storms

RealFeel Shade™89°

Heat Index92°

WindSE 8 mph

Air QualityFair

Max UV Index0.0 (Low)

Wind Gusts8 mph

Humidity74%

Indoor Humidity74% (Extremely Humid)

Dew Point75° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover70%

Rain0.09 in

Visibility5 mi

Cloud Ceiling4000 ft

9 PM

82°

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.

47%

Intermittent clouds

Flood Watch

9:00 PM Monday - 7:00 PM Thursday

Heat Index88°

WindSE 8 mph

Air QualityFair

Wind Gusts8 mph

Humidity77%

Indoor Humidity77% (Extremely Humid)

Dew Point74° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover70%

Visibility10 mi

Cloud Ceiling2000 ft

10 PM

80°

RealFeel® 87°

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.

49%

Intermittent clouds

Flood Watch

9:00 PM Monday - 7:00 PM Thursday

Heat Index85°

WindESE 7 mph

Air QualityFair

Wind Gusts8 mph

Humidity83%

Indoor Humidity83% (Extremely Humid)

Dew Point75° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover70%

Visibility10 mi

Cloud Ceiling3700 ft

11 PM

79°

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.

54%

Mostly cloudy w/ t-storms

Flood Watch

9:00 PM Monday - 7:00 PM Thursday

Heat Index80°

WindSE 7 mph

Air QualityFair

Wind Gusts8 mph

Humidity88%

Indoor Humidity88% (Extremely Humid)

Dew Point75° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover70%

Rain0.09 in

Visibility5 mi

Cloud Ceiling4000 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 94° with a RealFeel® of 102°, thunderstorms with a 48% 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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