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  • Early AM

    Apr 18

    Clear Lo 50°
    more
  • Today

    Apr 18

    An afternoon shower or two 64°Lo 44°
  • Sun

    Apr 19

    Mostly sunny and cooler 54°Lo 40°
    more
  • Mon

    Apr 20

    A little afternoon rain 50°Lo 47°
    more
  • Tue

    Apr 21

    Milder with brief showers 60°Lo 44°
    more
< Previous 8 hours Next 8 hours >
  Sat
3pm
4pm 5pm 6pm 7pm 8pm 9pm 10pm
  3pm 4pm 5pm 6pm 7pm 8pm 9pm 10pm
Forecast
Mostly Cloudy
Mostly Cloudy
Showers
Mostly Cloudy
Showers
Mostly Clear
Clear
Clear
Temp (°F) 61° 61° 61° 64° 60° 57° 55° 53°
RealFeel® 60° 58° 54° 60° 51° 50° 47° 46°
Humidity 47% 45% 45% 39% 44% 46% 48% 50%
   
  3pm 4pm 5pm 6pm 7pm 8pm 9pm 10pm
Rain
 
14%
 
18%
 
55%
 
47%
 
55%
 
0%
 
0%
 
0%
Snow
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Ice
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
   
  3pm 4pm 5pm 6pm 7pm 8pm 9pm 10pm
Wind (mph) 16 W 18 W 21 W 20 WNW 18 WNW 17 NW 16 NW 14 NW
UV Index 4 3 2 1 0 0 0 0
Cloud Cover 76% 76% 76% 76% 76% 10% 1% 0%
Dew Point 41° 40° 39° 39° 38° 37° 36° 35°
Middle Grid line 65 F Middle Grid line 60 F Middle Grid line 55 F Middle Grid line 50 F

Temperature History - Apr 18

more Historical Weather Data >
  Today Normal Record 4/18/2014
High 64° 57° 94° (1976) 42°
Low 44° 42° 26° (1887) 31°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:01 AM with 13:27 of sunlight, then sets at 7:28 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 5:20 AM with 13:00 of moolight, then sets at 6:20 PM

Boston Weather Report

2015 Boston Marathon Forecast: Cloudy Skies, Chilly Weather in Store for Runners

April 18, 2015; 12:18 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 potentially rainy conditions. more >