• Today

    Aug 30

    87°Lo 64°

    Mostly sunny

    Excellent for biking
    • Precip
      2%
    • Hours of Precip
      0
    • Wind
      Gust
      9 mph
    more
  • Wed

    Aug 31

    89°Lo 68°

    Partly sunny, warm and humid

    Very Good for biking
    • Precip
      9%
    • Hours of Precip
      0.5
    • Wind
      Gust
      7 mph
    more
  • Thu

    Sep 1

    81°Lo 61°

    Not as warm with a t-storm

    Very Good for biking
    • Precip
      56%
    • Hours of Precip
      1.5
    • Wind
      Gust
      9 mph
  • Fri

    Sep 2

    79°Lo 60°

    Partly sunny

    Excellent for biking
    • Precip
      4%
    • Hours of Precip
      0
    • Wind
      Gust
      13 mph
    more
  • Sat

    Sep 3

    79°Lo 60°

    Sunny and comfortable

    Excellent for biking
    • Precip
      7%
    • Hours of Precip
      0
    • Wind
      Gust
      9 mph
    more
Next Previous
Hi 81° RealFeel® 89° Precipitation 56%

Day

N

E

S

W

  • NNW 6 mph
  • Gusts: 9 mph

Clouds breaking and not as warm with a shower or thunderstorm around into the early afternoon

  • Max UV Index: 5 (Moderate)
  • Thunderstorms: 40%
  • Precipitation: 0.15 in
  • Rain: 0.15 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 1.5 hrs
  • Hours of Rain: 1.5 hrs
Lo 61° RealFeel® 60° Precipitation 9%

Night

N

E

S

W

  • NNW 7 mph
  • Gusts: 10 mph

Clear

  • Max UV Index: N/A
  • Thunderstorms: 40%
  • Precipitation: 0 in
  • Rain: 0 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs

Temperature History - Sep 1

more Historical Weather Data >
  Today Normal Record 9/1/2015
High 81° 85° N/A 91°
Low 61° 64° N/A 70°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:37 AM with 13:00 of sunlight, then sets at 7:37 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 6:46 AM with 13:06 of moolight, then sets at 7:52 PM

Greenbelt Weather Report

September to start on cooler, less humid note in northeastern US

August 30, 2016; 1:24 AM ET

Brief relief from heat and humidity will arrive in the northeastern United States during the first days of September. more >

Is Your Outdoor Gear Waterproof?

Dec 5, 2012; 5:00 AM ET Now that it's cold enough to hit the slopes, you may want to look more closely at what materials your winter sports gear is made of. As it turns out, not all waterproofing is created equal.