• Tonight

    Aug 20

    Lo 67°

    An evening shower or t-storm

    Asthma Weather
    • Hi
      RealFeel
      92°
    • UV
      7 - High
    • Air Qual.
      Good
  • Thu

    Aug 21

    88°Lo 68°

    Couple of showers, t-storms

    Neutral weather for asthma
    • Hi
      RealFeel
      97°
    • UV
      6 - High
    • Air Qual.
      Good
    more
  • Fri

    Aug 22

    85°Lo 69°

    A couple of thunderstorms

    At Risk weather for asthma
    • Hi
      RealFeel
      95°
    • UV
      5 - Moderate
    • Air Qual.
      Moderate
    more
  • Sat

    Aug 23

    79°Lo 66°

    A passing shower or two

    Neutral weather for asthma
    • Hi
      RealFeel
      85°
    • UV
      4 - Moderate
    • Cloud
      Cover
      70%
    more
  • Sun

    Aug 24

    79°Lo 62°

    Periods of clouds and sun

    Beneficial weather for asthma
    • Hi
      RealFeel
      81°
    • UV
      4 - Moderate
    • Cloud
      Cover
      70%
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Wed
2pm
3pm 4pm 5pm 6pm 7pm 8pm 9pm
  2pm 3pm 4pm 5pm 6pm 7pm 8pm 9pm
Forecast
Partly Sunny
Partly Sunny
Partly Cloudy
T-storms
T-storms
T-storms
T-storms
T-storms
Temp (°F) 86° 86° 85° 81° 76° 75° 76° 75°
RealFeel® 92° 91° 87° 83° 77° 77° 76° 74°
Humidity 53% 52% 55% 71% 85% 87% 78% 79%
   
  2pm 3pm 4pm 5pm 6pm 7pm 8pm 9pm
Rain
 
22%
 
22%
 
27%
 
59%
 
60%
 
54%
 
51%
 
51%
Snow
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Ice
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
   
  2pm 3pm 4pm 5pm 6pm 7pm 8pm 9pm
Wind (mph) 6 SE 7 SE 7 SE 6 ESE 5 ENE 5 NNE 3 NNE 3 NNE
UV Index 6 5 3 1 1 0 0 0
Cloud Cover 41% 49% 68% 84% 85% 86% 80% 81%
Dew Point 67° 67° 67° 70° 71° 71° 69° 68°
Middle Grid line 90 F Middle Grid line 85 F Middle Grid line 80 F Middle Grid line 75 F Middle Grid line 70 F

Temperature History - Aug 20

more Historical Weather Data >
  Today Normal Record 8/20/2013
High 86° 83° N/A 88°
Low 67° 65° N/A 62°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:25 AM with 13:31 of sunlight, then sets at 7:56 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 2:05 AM with 14:32 of moolight, then sets at 4:37 PM

Top Story

Lanham Weather Report

DC: Downpour, Flooding Risk to Increase

August 20, 2014; 12:00 PM ET

A wedge of dry air will slowly erode at midweek and will allow drenching showers and thunderstorms to survive the trip into Washington, D.C., from the Midwest. more >

The Dangers of Bus Travel

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Wed. Air Quality

Wed. Asthma Risk

Wed. UV Index