• Early AM

    May 21

    Lo 62°

    Partly cloudy

    Morning School Bus Weather
    • T-storms
      24%
    • Precip
      25%
    • Wind
      Gust
      13 mph
    more
  • Today

    May 21

    77°Lo 63°

    Variably cloudy, a t-storm

    Excellent at the bus stop
    • T-storms
      60%
    • Precip
      56%
    • Wind
      Gust
      13 mph
  • Wed

    May 22

    76°Lo 63°

    Partly sunny with a t-storm

    Good at the bus stop
    • T-storms
      60%
    • Precip
      57%
    • Wind
      Gust
      19 mph
    more
  • Thu

    May 23

    72°Lo 60°

    A couple of thunderstorms

    Very Good at the bus stop
    • T-storms
      40%
    • Precip
      67%
    • Wind
      Gust
      19 mph
    more
  • Fri

    May 24

    71°Lo 53°

    A shower possible

    Very Good at the bus stop
    • T-storms
      26%
    • Precip
      30%
    • Wind
      Gust
      22 mph
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Tue
8am
9am 10am 11am 12pm 1pm 2pm 3pm
  8am 9am 10am 11am 12pm 1pm 2pm 3pm
Forecast
Cloudy
Mostly Cloudy
Mostly Cloudy
T-storms
Partly Cloudy
Partly Cloudy
T-storms
Partly Cloudy
Temp (°F) 66° 68° 70° 72° 75° 77° 75° 75°
RealFeel® 63° 67° 70° 73° 79° 81° 79° 80°
Humidity 90% 85% 81% 77% 74% 70% 78% 77%
   
  8am 9am 10am 11am 12pm 1pm 2pm 3pm
Rain
 
0%
 
0%
 
0%
 
51%
 
47%
 
47%
 
51%
 
47%
Snow
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Ice
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
   
  8am 9am 10am 11am 12pm 1pm 2pm 3pm
Wind (mph) 5 SW 6 SW 7 SSW 7 SSW 8 SSW 9 SSW 9 S 9 S
UV Index 0 1 3 4 5 6 6 5
Cloud Cover 90% 86% 75% 70% 70% 70% 70% 70%
Dew Point 63° 63° 63° 64° 66° 66° 68° 68°
Middle Grid line 80 F Middle Grid line 75 F Middle Grid line 70 F Middle Grid line 65 F

Temperature History - May 21

more Historical Weather Data >
  Today Normal Record 5/21/2012
High 77° 70° 90° (1996) 64°
Low 63° 54° 43° (2002) 60°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 5:33 AM with 14:36 of sunlight, then sets at 8:09 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 3:13 PM with 11:47 of moolight, then sets at 3:00 AM

Top Story

Rockville Centre Weather Report

Summerlike Tuesday in DC, Philadelphia, New York

May 20, 2013; 9:48 PM ET

Rising temperatures and humidity across the mid-Atlantic will have it feeling like the end of June. more >

Breaking Weather: Tracking Dangerous Storms

May 20, 2013; 10:54 PM ET Severe thunderstorms will continue into the overnight hours from the Great Lakes to Texas.

Tue. Morning Bus Stop

Tue. UV Index

Tue. Wind Maps