• Early AM

    Apr 19

    Lo 42°

    Partly cloudy

    Ragweed Pollen Weather
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      0 - Low
    • Tree
      Pollen
      350 - High
    more
  • Today

    Apr 19

    61°Lo 39°

    Mostly sunny

    Low ragweed pollen levels
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      0 - Low
    • Tree
      Pollen
      350 - High
    more
  • Mon

    Apr 20

    50°Lo 47°

    Breezy and cooler with rain

    Low ragweed pollen levels
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      0 - Low
    • Tree
      Pollen
      350 - High
  • Tue

    Apr 21

    64°Lo 41°

    Warmer with a shower or two

    Low ragweed pollen levels
    • Precip
      58%
    • Wind
      Speed
      10 mph
    • Cloud
      Cover
      81%
    more
  • Wed

    Apr 22

    60°Lo 39°

    Mostly cloudy

    Ragweed Pollen Weather
    • Precip
      24%
    • Wind
      Speed
      14 mph
    • Cloud
      Cover
      41%
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Mon
9am
10am 11am 12pm 1pm 2pm 3pm 4pm
  9am 10am 11am 12pm 1pm 2pm 3pm 4pm
Forecast
Cloudy
Cloudy
Rain
Rain
Rain
Rain
Cloudy
Cloudy
Temp (°F) 43° 44° 45° 46° 46° 47° 47° 48°
RealFeel® 35° 36° 34° 35° 34° 37° 40° 40°
Humidity 73% 72% 76% 75% 75% 76% 75% 76%
   
  9am 10am 11am 12pm 1pm 2pm 3pm 4pm
Rain
 
24%
 
29%
 
65%
 
65%
 
65%
 
51%
 
47%
 
49%
Snow
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Ice
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
   
  9am 10am 11am 12pm 1pm 2pm 3pm 4pm
Wind (mph) 13 ESE 13 ESE 15 ESE 16 ESE 18 ESE 14 ESE 14 ESE 14 ESE
UV Index 1 1 1 2 2 1 1 1
Cloud Cover 99% 99% 99% 99% 99% 99% 99% 99%
Dew Point 35° 35° 38° 38° 39° 39° 40° 40°
Middle Grid line 50 F Middle Grid line 45 F Middle Grid line 40 F

Temperature History - Apr 20

more Historical Weather Data >
  Today Normal Record 4/20/2014
High 50° 61° N/A 59°
Low 47° 38° N/A 29°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 5:59 AM with 13:33 of sunlight, then sets at 7:32 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 6:40 AM with 14:06 of moolight, then sets at 8:46 PM

Harvard Weather Report

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

April 18, 2015; 11:01 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 >

Mon. Pollen

Mon. Dust & Dander

Mon. Wind Maps