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Herndon, VA

84°F
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Herndon, VA Weather
Today WinterCast Local {stormName} Tracker Hourly 10-Day Radar MinuteCast® Monthly Air Quality Health & Activities

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Winter Center
Today Hourly 10-Day Radar MinuteCast® Monthly Air Quality Health & Activities
Thursday, July 9

Day

7/9
88°Hi
RealFeel® 100°
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™ 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
Humid this morning; partly sunny with a couple of showers and a heavy thunderstorm; thunderstorms can bring flash flooding and localized damaging wind gusts
alerts

Flood Watch

2:00 PM Thursday - 11:00 PM Thursday

Max UV Index10.0 (Very High)

AccuLumen Brightness Index™4 (Dull)

WindSW 7 mph

Wind Gusts14 mph

Probability of Precipitation98%

Probability of Thunderstorms59%

Precipitation0.60 in

Rain0.60 in

Hours of Precipitation4.5

Hours of Rain4.5

Cloud Cover76%

Morning

Afternoon

Night

7/9
69°Lo
RealFeel® 71°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
A thunderstorm in spots early this evening; otherwise, partly cloudy and humid; thunderstorms can bring flash flooding and localized damaging wind gusts
alerts

Flood Watch

2:00 PM Thursday - 11:00 PM Thursday

WindW 6 mph

Wind Gusts7 mph

Probability of Precipitation55%

Probability of Thunderstorms33%

Precipitation0.04 in

Rain0.04 in

Hours of Precipitation0.5

Hours of Rain0.5

Cloud Cover65%

Evening

Overnight

Sun & Moon

14 hrs 45 mins
Rise 5:52 AM
Set 8:37 PM
Waning Crescent
Rise 1:07 AM
Set 3:48 PM

Temperature History

7/9
High
Low
Forecast
88°
69°
Average
88°
67°
Last Year
91°
72°
Record
99°
1988
48°
1984

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World North America United States Virginia Herndon

Weather Near Herndon:

  • Alexandria, VA
  • Germantown, MD
  • Washington, DC
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