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  • Mon

    May 18

    A p.m. t-storm in spots 72°Lo 54°
    more
  • Tue

    May 19

    A p.m. shower in places 72°Lo 55°
    more
  • Wed

    May 20

    Couple of thunderstorms 73°Lo 54°
  • Thu

    May 21

    Mostly cloudy with a shower 65°Lo 54°
    more
  • Fri

    May 22

    Rain at times 66°Lo 55°
    more
Hi 73° RealFeel® 79° Precipitation 60%

Day

N

E

S

W

  • SSE 6 mph
  • Gusts: 18 mph

Times of sun and clouds with a couple of showers and a thunderstorm, mainly later

  • Max UV Index: 7 (High)
  • Thunderstorms: 60%
  • Precipitation: 0.14 in
  • Rain: 0.14 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 1.5 hrs
  • Hours of Rain: 1.5 hrs
Lo 54° RealFeel® 47° Precipitation 57%

Night

N

E

S

W

  • ENE 8 mph
  • Gusts: 14 mph

Mostly cloudy with a bit of rain

  • Max UV Index: N/A
  • Thunderstorms: 24%
  • Precipitation: 0.08 in
  • Rain: 0.08 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 2 hrs
  • Hours of Rain: 2 hrs

Temperature History - May 20

more Historical Weather Data >
  Today Normal Record 5/20/2014
High 73° 70° N/A 73°
Low 54° 47° N/A 43°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 5:19 AM with 14:45 of sunlight, then sets at 8:04 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 7:38 AM with 14:51 of moolight, then sets at 10:29 PM

Watertown Weather Report

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

April 18, 2015; 4:28 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 >