• Early AM

    Aug 27

    Lo 68°

    Mainly clear

    Ragweed Pollen Weather
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      3 - Moderate
    • Tree
      Pollen
      1 - Low
    more
  • Today

    Aug 27

    91°Lo 65°

    Mostly sunny and hot

    Moderate ragweed pollen levels
    • Grass
      Pollen
      3 - Moderate
    • Ragweed
      Pollen
      3 - Moderate
    • Tree
      Pollen
      1 - Low
  • Sun

    Aug 28

    88°Lo 65°

    Mostly sunny and humid

    Moderate ragweed pollen levels
    • Grass
      Pollen
      3 - Moderate
    • Ragweed
      Pollen
      3 - Moderate
    • Tree
      Pollen
      1 - Low
    more
  • Mon

    Aug 29

    90°Lo 67°

    A thunderstorm in the area

    Moderate ragweed pollen levels
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      3 - Moderate
    • Tree
      Pollen
      1 - Low
    more
  • Tue

    Aug 30

    91°Lo 70°

    Partly sunny and humid

    Moderate ragweed pollen levels
    • Grass
      Pollen
      3 - Moderate
    • Ragweed
      Pollen
      3 - Moderate
    • Tree
      Pollen
      1 - Low
    more
Next Previous
Next 8 hours >
  Sat
2am
3am 4am 5am 6am 7am 8am 9am
  2am 3am 4am 5am 6am 7am 8am 9am
Forecast
Mostly Clear
Clear
Clear
Clear
Clear
Sunny
Mostly Sunny
Mostly Sunny
Temp (°F) 74° 72° 71° 71° 68° 72° 74° 77°
RealFeel® 78° 75° 73° 73° 70° 75° 77° 82°
Humidity 86% 86% 88% 90% 95% 89% 81% 71%
   
  2am 3am 4am 5am 6am 7am 8am 9am
Rain
 
2%
 
2%
 
2%
 
2%
 
2%
 
2%
 
3%
 
3%
Snow
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Ice
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
   
  2am 3am 4am 5am 6am 7am 8am 9am
Wind (mph) 1 NNW 2 NNW 2 NNW 4 NNW 4 N 5 NNE 5 NE 6 NE
UV Index 0 0 0 0 0 0 1 2
Cloud Cover 25% 5% 7% 9% 9% 9% 10% 11%
Dew Point 69° 68° 67° 68° 67° 69° 67° 67°
Middle Grid line 80 F Middle Grid line 75 F Middle Grid line 70 F Middle Grid line 65 F

Temperature History - Aug 27

more Historical Weather Data >
  Today Normal Record 8/27/2015
High 91° 82° N/A 79°
Low 65° 66° N/A 54°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:33 AM with 13:13 of sunlight, then sets at 7:46 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 1:50 AM with 14:36 of moolight, then sets at 4:26 PM

Rockville Weather Report

Is summer heat, humidity over for the northeastern US?

August 26, 2016; 9:45 PM ET

Following a taste of autumn early this past week, is summer heat and humidity over for the northeastern United States? more >

Sat. Pollen

Sat. Dust & Dander

Sat. Wind Maps