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Flash floods threaten 43 million people in the Northeast ahead of dramatic cooldown. Get details Chevron right

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Winter Center
Today Hourly Daily Radar MinuteCast® Monthly Air Quality Health & Activities
Sunday, August 17

Day

8/17
89°Hi
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
RealFeel Shade™ 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.
LEARN MORE
Plenty of sunshine

Max UV Index10 (Very High)

WindNNW 1 mph

Wind Gusts5 mph

Probability of Precipitation5%

Probability of Thunderstorms0%

Precipitation0.00 in

Cloud Cover0%

Night

8/17
67°Lo
RealFeel® 65°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
Clear

WindW 6 mph

Wind Gusts12 mph

Probability of Precipitation5%

Probability of Thunderstorms0%

Precipitation0.00 in

Cloud Cover2%

Sun & Moon

13 hrs 19 mins
Rise 6:13 AM
Set 7:32 PM
Waning Crescent
Rise 12:14 AM
Set 3:29 PM

Temperature History

8/17
High
Low
Forecast
89°
67°
Average
89°
65°
Last Year
89°
66°

Further Ahead

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World North America United States California San Marcos

Weather Near San Marcos:

  • Chula Vista, CA
  • Oceanside, CA
  • San Diego, CA
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