• Tonight

    Aug 31

    Lo 68°

    A thunderstorm in spots

    Asthma Weather
    • Hi
      RealFeel
      98°
    • UV
      4 - Moderate
    • Air Qual.
      Unhealthy
      (Sensitive)
  • Thu

    Sep 1

    81°Lo 60°

    Not as warm with a t-storm

    At High Risk weather for asthma
    • Hi
      RealFeel
      88°
    • UV
      4 - Moderate
    • Air Qual.
      Moderate
    more
  • Fri

    Sep 2

    80°Lo 62°

    Partly sunny and less humid

    Beneficial weather for asthma
    • Hi
      RealFeel
      81°
    • UV
      4 - Moderate
    • Air Qual.
      Good
    more
  • Sat

    Sep 3

    70°Lo 60°

    Sun followed by clouds

    Neutral weather for asthma
    • Hi
      RealFeel
      75°
    • UV
      5 - High
    • Air Qual.
      Good
    more
  • Sun

    Sep 4

    68°Lo 61°

    Mostly cloudy, rain possible

    Beneficial weather for asthma
    • Hi
      RealFeel
      72°
    • UV
      4 - Moderate
    • Air Qual.
      Good
    more
Next Previous
Hi 90° RealFeel® 98° Precipitation 25%

Day

N

E

S

W

  • S 5 mph
  • Gusts: 14 mph

Very warm and humid with partial sunshine

  • Max UV Index: 5 (Moderate)
  • Thunderstorms: 20%
  • Precipitation: 0 in
  • Rain: 0 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs
Lo 68° RealFeel® 69° Precipitation 48%

Night

N

E

S

W

  • W 5 mph
  • Gusts: 9 mph

Partly cloudy and humid with a shower or thunderstorm around

  • Max UV Index: N/A
  • Thunderstorms: 60%
  • Precipitation: 0.38 in
  • Rain: 0.38 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 2.5 hrs
  • Hours of Rain: 2.5 hrs

Temperature History - Aug 31

more Historical Weather Data >
  Today Normal Record 8/31/2015
High 90° 81° N/A 88°
Low 68° 65° N/A 72°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:37 AM with 13:03 of sunlight, then sets at 7:40 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 5:48 AM with 13:32 of moolight, then sets at 7:20 PM

Gaithersburg Weather Report

Warm fall may jeopardize foliage displays in northeastern US

August 31, 2016; 4:49 PM ET

Though the summer season is winding down, forecasters are predicting a warm start to fall across the Northeast — a weather pattern that could spell bad news for fall foliage lovers. more >

Wed. Air Quality

Wed. Asthma Risk

Wed. UV Index