• Tonight

    Aug 29

    Lo 64°

    Partly cloudy

    Asthma Weather
    • Hi
      RealFeel
      100°
    • UV
      5 - High
    • Air Qual.
      Good
    more
  • Tue

    Aug 30

    87°Lo 66°

    Sunshine; warm in the p.m.

    Beneficial weather for asthma
    • Hi
      RealFeel
      94°
    • UV
      5 - High
    • Air Qual.
      Moderate
    more
  • Wed

    Aug 31

    89°Lo 66°

    Partly sunny and humid

    Neutral weather for asthma
    • Hi
      RealFeel
      98°
    • UV
      5 - High
    • Air Qual.
      Moderate
  • Thu

    Sep 1

    81°Lo 59°

    Not as warm

    Neutral weather for asthma
    • Hi
      RealFeel
      84°
    • UV
      4 - Moderate
    • Air Qual.
      Good
    more
  • Fri

    Sep 2

    78°Lo 56°

    Partly sunny and breezy

    Beneficial weather for asthma
    • Hi
      RealFeel
      78°
    • UV
      5 - High
    • Air Qual.
      Good
    more
Next Previous
Hi 89° RealFeel® 98° Precipitation 25%

Day

N

E

S

W

  • SSW 4 mph
  • Gusts: 5 mph

Humid with intervals of clouds and sun

  • Max UV Index: 6 (High)
  • Thunderstorms: 11%
  • Precipitation: 0 in
  • Rain: 0 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs
Lo 66° RealFeel® 66° Precipitation 55%

Night

N

E

S

W

  • W 4 mph
  • Gusts: 7 mph

Mostly cloudy with a shower or thunderstorm late

  • Max UV Index: N/A
  • Thunderstorms: 40%
  • Precipitation: 0.05 in
  • Rain: 0.05 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0.5 hrs
  • Hours of Rain: 0.5 hrs

Temperature History - Aug 31

more Historical Weather Data >
  Today Normal Record 8/31/2015
High 89° 81° N/A 88°
Low 66° 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

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

August 29, 2016; 7:44 PM ET

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

Wed. Asthma Risk

Wed. UV Index