• Today

    Apr 19

    59°Lo 38°

    Sunny

    Very Unlikely for a snow day
    • Snow
      0%
    • Ice
      0%
    • Snow
      0 in
    more
  • Mon

    Apr 20

    51°Lo 48°

    Heavy rain; becoming windier

    Very Unlikely for a snow day
    • Snow
      0%
    • Ice
      0%
    • Snow
      0 in
    more
  • Tue

    Apr 21

    67°Lo 41°

    Warmer with a shower or two

    Very Unlikely for a snow day
    • Snow
      0%
    • Ice
      0%
    • Snow
      0 in
  • Wed

    Apr 22

    61°Lo 41°

    Mostly cloudy and breezy

    Very Unlikely for a snow day
    • Snow
      0%
    • Ice
      0%
    • Snow
      0 in
    more
  • Thu

    Apr 23

    55°Lo 35°

    Mostly cloudy and breezy

    Very Unlikely for a snow day
    • Snow
      0%
    • Ice
      0%
    • Snow
      0 in
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Tue
1am
2am 3am 4am 5am 6am 7am 8am
  1am 2am 3am 4am 5am 6am 7am 8am
Forecast
Rain
Cloudy
Rain
Rain
Cloudy
Cloudy
Rain
Cloudy
Temp (°F) 51° 52° 52° 52° 52° 52° 52° 53°
RealFeel® 42° 46° 44° 45° 48° 49° 46° 51°
Humidity 88% 87% 88% 90% 92% 93% 95% 92%
   
  1am 2am 3am 4am 5am 6am 7am 8am
Rain
 
63%
 
49%
 
64%
 
64%
 
49%
 
47%
 
51%
 
49%
Snow
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Ice
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
   
  1am 2am 3am 4am 5am 6am 7am 8am
Wind (mph) 10 E 10 E 9 ESE 8 E 7 E 7 ESE 7 SE 6 SSE
UV Index 0 0 0 0 0 0 0 0
Cloud Cover 100% 99% 99% 99% 99% 100% 100% 94%
Dew Point 48° 48° 49° 49° 50° 50° 50° 51°
Middle Grid line 55 F Middle Grid line 50 F

Temperature History - Apr 21

more Historical Weather Data >
  Today Normal Record 4/21/2014
High 67° N/A N/A 64°
Low 41° N/A N/A 28°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 5:57 AM with 13:37 of sunlight, then sets at 7:34 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 8:10 AM with 14:44 of moolight, then sets at 10:54 PM

Blackstone Weather Report

2015 Boston Marathon Forecast: Rain and Wind in Store for Runners

April 19, 2015; 9:24 AM ET

The 119th Boston Marathon will take place on Monday, April 20, and runners set to take on the historic course will face cool and rainy conditions. more >

The 540 Snow Line

Dec 20, 2012; 5:00 AM ET The 540 line is often used by meteorologists to determine the chances of rain vs. snow.

Tue. Snow Day Potential