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  • Mon

    May 18

    Partly sunny 63°Lo 48°
    more
  • Tue

    May 19

    Partly sunny 64°Lo 49°
    more
  • Wed

    May 20

    Plenty of clouds 63°Lo 51°
  • Thu

    May 21

    An a.m. shower; mostly cloudy 63°Lo 48°
    more
  • Fri

    May 22

    Sunshine and warmer 71°Lo 57°
    more
Hi 63° RealFeel® 63° Precipitation 1%

Day

N

E

S

W

  • NE 10 mph
  • Gusts: 20 mph

Plenty of clouds

  • Max UV Index: 5 (Moderate)
  • Thunderstorms: 0%
  • Precipitation: 0 in
  • Rain: 0 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs
Lo 51° RealFeel® 38° Precipitation 60%

Night

N

E

S

W

  • NE 14 mph
  • Gusts: 31 mph

Plenty of clouds with a bit of rain

  • Max UV Index: N/A
  • Thunderstorms: 0%
  • Precipitation: 0.12 in
  • Rain: 0.12 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 63° 67° 91° (1996) 69°
Low 51° 51° 40° (1892) 53°

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 14:50 of moolight, then sets at 10:28 PM

Cambridge Weather Report

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

April 18, 2015; 6:16 PM 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 >