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Herndon, VA

74°F
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Herndon

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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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August 21 - September 4

Fri 8/21

81° /67°
4%
Not as warm with lower humidity with some sun, then turning cloudy

RealFeel®85°

RealFeel Shade™79°

Max UV Index7.0 (High)

WindNNE 6 mph

Sat 8/22

75° /65°
99%
Humid with a shower and thunderstorm; cloudy, then clouds and sun in the afternoon; downpours can reduce visibility and cause ponding on streets and highways

RealFeel®79°

RealFeel Shade™76°

Max UV Index2.0 (Low)

WindSE 6 mph

Total Hours of Precipitation4

Total Hours of Rain4

Sun 8/23

85° /60°
55%
Partly sunny and warmer with a thundershower in spots

RealFeel®88°

RealFeel Shade™83°

Max UV Index8.0 (Very High)

WindW 8 mph

Total Hours of Precipitation1

Total Hours of Rain1

Mon 8/24

81° /56°
55%
Partly sunny with a passing shower

RealFeel®83°

RealFeel Shade™78°

Max UV Index8.0 (Very High)

WindW 8 mph

Total Hours of Precipitation1

Total Hours of Rain1

Tue 8/25

81° /63°
8%
Plenty of sunshine

RealFeel®87°

RealFeel Shade™79°

Max UV Index8.0 (Very High)

WindWNW 6 mph

Wed 8/26

84° /67°
55%
A blend of sun and clouds with widely separated thunderstorms; humid

RealFeel®89°

RealFeel Shade™85°

Max UV Index5.0 (Moderate)

WindS 5 mph

Total Hours of Precipitation2

Total Hours of Rain2

Thu 8/27

81° /66°
63%
Mostly cloudy and humid with a couple of thunderstorms, especially late in the day

RealFeel®88°

RealFeel Shade™82°

Max UV Index3.0 (Moderate)

WindSSE 5 mph

Total Hours of Precipitation4

Total Hours of Rain4

Fri 8/28

84° /64°
12%
Humid with decreasing clouds

RealFeel®95°

RealFeel Shade™88°

Max UV Index8.0 (Very High)

WindSSW 2 mph

Sat 8/29

85° /62°
62%
Partial sunshine with a couple of thunderstorms in the afternoon

RealFeel®91°

RealFeel Shade™86°

Max UV Index7.0 (High)

WindW 4 mph

Total Hours of Precipitation1

Total Hours of Rain1

Sun 8/30

82° /61°
1%
Mostly sunny and less humid

RealFeel®86°

RealFeel Shade™80°

Max UV Index7.0 (High)

WindNW 5 mph

Mon 8/31

80° /60°
1%
Sunshine and some clouds

RealFeel®84°

RealFeel Shade™80°

Max UV Index7.0 (High)

WindE 7 mph

Tue 9/1

80° /59°
0%
Mostly sunny and humid

RealFeel®87°

RealFeel Shade™83°

Max UV Index7.0 (High)

WindENE 5 mph

Wed 9/2

79° /58°
25%
Mostly cloudy

RealFeel®80°

RealFeel Shade™80°

Max UV Index3.0 (Moderate)

WindESE 5 mph

Thu 9/3

77° /63°
75%
Cloudy with a couple of showers and a thunderstorm in the afternoon

RealFeel®80°

RealFeel Shade™80°

Max UV Index2.0 (Low)

WindSSE 8 mph

Total Hours of Precipitation2

Total Hours of Rain2

Fri 9/4

84° /65°
65%
Humid with sun and clouds; a couple of afternoon showers and a thunderstorm

RealFeel®91°

RealFeel Shade™87°

Max UV Index6.0 (High)

WindSSW 7 mph

Total Hours of Precipitation1

Total Hours of Rain1

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World North America United States Virginia Herndon

Weather Near Herndon:

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