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  • Today

    Apr 18

    Partly sunny and warmer 70°Lo 40°
  • Sun

    Apr 19

    Mostly sunny 61°Lo 38°
    more
  • Mon

    Apr 20

    Breezy and cooler with rain 51°Lo 49°
    more
  • Tue

    Apr 21

    Warmer with a shower or two 64°Lo 39°
    more
  • Wed

    Apr 22

    Mostly cloudy 60°Lo 39°
    more
< Previous 8 hours Next 8 hours >
  Sat
8am
9am 10am 11am 12pm 1pm 2pm 3pm
  8am 9am 10am 11am 12pm 1pm 2pm 3pm
Forecast
Partly Sunny
Partly Sunny
Mostly Sunny
Mostly Sunny
Mostly Sunny
Partly Sunny
Partly Cloudy
Partly Cloudy
Temp (°F) 49° 50° 54° 58° 63° 68° 70° 69°
RealFeel® 52° 56° 62° 68° 72° 74° 74° 70°
Humidity 78% 73% 61% 53% 46% 38% 33% 34%
   
  8am 9am 10am 11am 12pm 1pm 2pm 3pm
Rain
 
5%
 
5%
 
5%
 
5%
 
5%
 
4%
 
3%
 
3%
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) 2 WNW 4 NW 4 NW 4 NNW 6 N 7 W 9 WSW 10 W
UV Index 1 2 3 5 6 6 5 4
Cloud Cover 48% 36% 24% 23% 26% 40% 57% 62%
Dew Point 42° 42° 41° 41° 41° 41° 40° 40°
Middle Grid line 75 F Middle Grid line 70 F Middle Grid line 65 F Middle Grid line 60 F Middle Grid line 55 F Middle Grid line 50 F Middle Grid line 45 F

Temperature History - Apr 18

more Historical Weather Data >
  Today Normal Record 4/18/2014
High 70° 60° N/A 49°
Low 40° 37° N/A 25°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:01 AM with 13:30 of sunlight, then sets at 7:31 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 6:00 AM with 13:36 of moolight, then sets at 7:36 PM

Harvard Weather Report

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

April 18, 2015; 6:38 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 >