• Today

    Apr 20

    77°Lo 52°

    A severe p.m. t-storm; warmer

    Poor for lawn mowing
    • Hours of Precip
      4
    • Precip
      50%
    • Hi
      RealFeel
      80°
  • Tue

    Apr 21

    67°Lo 45°

    Mostly sunny and not as warm

    Very Good for lawn mowing
    • Hours of Precip
      0
    • Precip
      9%
    • Hi
      RealFeel
      66°
    more
  • Wed

    Apr 22

    66°Lo 38°

    Mostly cloudy, p.m. showers

    Very Good for lawn mowing
    • Hours of Precip
      1.5
    • Precip
      65%
    • Hi
      RealFeel
      66°
    more
  • Thu

    Apr 23

    60°Lo 39°

    Mostly sunny and breezy

    Very Good for lawn mowing
    • Hours of Precip
      0
    • Precip
      14%
    • Hi
      RealFeel
      57°
    more
  • Fri

    Apr 24

    63°Lo 39°

    Rather cloudy

    Fair for lawn mowing
    • Hours of Precip
      0
    • Precip
      8%
    • Hi
      RealFeel
      62°
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Tue
6am
7am 8am 9am 10am 11am 12pm 1pm
  6am 7am 8am 9am 10am 11am 12pm 1pm
Forecast
Showers
Partly Cloudy
Partly Sunny
Mostly Sunny
Mostly Sunny
Mostly Sunny
Mostly Sunny
Mostly Sunny
Temp (°F) 52° 54° 54° 54° 56° 58° 60° 62°
RealFeel® 46° 50° 50° 51° 54° 58° 61° 64°
Humidity 73% 66% 62% 58% 49% 43% 39% 35%
   
  6am 7am 8am 9am 10am 11am 12pm 1pm
Rain
 
51%
 
47%
 
19%
 
19%
 
15%
 
6%
 
6%
 
4%
Snow
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Ice
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
   
  6am 7am 8am 9am 10am 11am 12pm 1pm
Wind (mph) 7 WNW 8 W 10 W 12 W 14 W 15 WNW 14 W 14 W
UV Index 0 0 1 2 4 5 6 7
Cloud Cover 76% 68% 30% 23% 17% 18% 20% 20%
Dew Point 44° 43° 41° 39° 37° 36° 35° 34°
Middle Grid line 65 F Middle Grid line 60 F Middle Grid line 55 F Middle Grid line 50 F

Temperature History - Apr 20

more Historical Weather Data >
  Today Normal Record 4/21/2014
High 77° 69° 89° (1985) 70°
Low 52° 44° 29° (1983) 31°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:24 AM with 13:28 of sunlight, then sets at 7:52 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 8:40 AM with 14:31 of moolight, then sets at 11:11 PM

Gaithersburg Weather Report

DC, Baltimore: Cooler Air to Sweep Away Warmth This Week

April 21, 2015; 3:41 AM ET

Cooler air will push into the Washington, D.C., and Baltimore areas during the middle and latter part of the week. more >

Why Do Leaves Change Color?

Sep 20, 2011; 5:00 AM ET Why do leaves change from green to beautiful shades of red, orange and yellow in the fall?

Current Drought Status

Current Soil Conditions

Mon. Overnight Freeze

Mon. Degree Days

Mon. Evapotranspiration