• Today

    Mar 5

    31°Lo 9°

    Ice changing to snow; colder

    At Risk weather for migraines
    • Hi
      RealFeel
      18°
    • UV
      0 - Low
    • Cloud
      Cover
      99%
  • Fri

    Mar 6

    29°Lo 10°

    Cold with plenty of sunshine

    Beneficial weather for migraines
    • Hi
      RealFeel
      39°
    • UV
      0 - Moderate
    • Cloud
      Cover
      9%
    more
  • Sat

    Mar 7

    43°Lo 26°

    Mostly sunny and not as cold

    Neutral weather for migraines
    • Hi
      RealFeel
      41°
    • UV
      0 - Moderate
    • Cloud
      Cover
      24%
    more
  • Sun

    Mar 8

    50°Lo 30°

    Intervals of clouds and sun

    Beneficial weather for migraines
    • Hi
      RealFeel
      50°
    • UV
      0 - Moderate
    • Cloud
      Cover
      53%
    more
  • Mon

    Mar 9

    49°Lo 27°

    Plenty of sun

    Beneficial weather for migraines
    • Hi
      RealFeel
      50°
    • UV
      5 - Moderate
    • Cloud
      Cover
      10%
    more
Next Previous
Hi 31° RealFeel® 18° Precipitation 91%

Day

N

E

S

W

  • NNW 14 mph
  • Gusts: 22 mph

Ice changing to snow, accumulating 6-10 inches; colder

  • Max UV Index: 0 (Low)
  • Thunderstorms: 3%
  • Precipitation: 0.77 in
  • Rain: 0 in
  • Snow: 8.9 in
  • Ice: 0.15 in
  • Hours of Precipitation: 11 hrs
  • Hours of Rain: 0 hrs
Lo 9° RealFeel® -1° Precipitation 5%

Night

N

E

S

W

  • NNW 10 mph
  • Gusts: 20 mph

Bitterly cold with clearing

  • Max UV Index: N/A
  • Thunderstorms: 3%
  • Precipitation: 0 in
  • Rain: 0 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs

Temperature History - Mar 5

more Historical Weather Data >
  Today Normal Record 3/5/2014
High 31° 52° 79° (1976) 41°
Low 30° (1978) 31°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:37 AM with 11:29 of sunlight, then sets at 6:06 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 6:17 PM with 12:34 of moolight, then sets at 6:51 AM

Herndon Weather Report

DC, Baltimore: Snowstorm, Freeze-up to Precede Thaw

March 4, 2015; 5:11 PM ET

Washington, D.C., and Baltimore will lie within a 1,500-mile swath of snow, slippery roads and travel disruptions during much of Thursday. more >

Making a Forecast: The Sixth Sense

Feb 16, 2015; 5:00 AM ET What steps go into making a forecast?

Thu. Migraine Headache

Thu. UV Index