• Today

    Sep 21

    76°Lo 58°

    Pouring morning rain; cloudy

    Low ragweed pollen levels
    • Grass
      Pollen
      2 - Low
    • Ragweed
      Pollen
      5 - Low
    • Tree
      Pollen
      0 - Low
    more
  • Mon

    Sep 22

    71°Lo 42°

    Breezy with clouds and sun

    Low ragweed pollen levels
    • Grass
      Pollen
      2 - Low
    • Ragweed
      Pollen
      5 - Low
    • Tree
      Pollen
      0 - Low
    more
  • Tue

    Sep 23

    68°Lo 45°

    Sunny much of the time

    Low ragweed pollen levels
    • Grass
      Pollen
      2 - Low
    • Ragweed
      Pollen
      5 - Low
    • Tree
      Pollen
      0 - Low
  • Wed

    Sep 24

    66°Lo 41°

    Plenty of sunshine

    Low ragweed pollen levels
    • Precip
      4%
    • Wind
      Speed
      4 mph
    • Cloud
      Cover
      0%
    more
  • Thu

    Sep 25

    69°Lo 48°

    Plenty of sunshine

    Ragweed Pollen Weather
    • Precip
      8%
    • Wind
      Speed
      4 mph
    • Cloud
      Cover
      0%
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Tue
9am
10am 11am 12pm 1pm 2pm 3pm 4pm
  9am 10am 11am 12pm 1pm 2pm 3pm 4pm
Forecast
Mostly Sunny
Mostly Sunny
Mostly Sunny
Mostly Sunny
Mostly Sunny
Mostly Sunny
Mostly Sunny
Mostly Sunny
Temp (°F) 52° 56° 59° 62° 65° 67° 67° 68°
RealFeel® 53° 57° 62° 66° 67° 68° 67° 67°
Humidity 63% 54% 49% 46% 42% 41% 42% 40%
   
  9am 10am 11am 12pm 1pm 2pm 3pm 4pm
Rain
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
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) 4 WNW 5 WNW 6 WNW 7 WNW 7 WNW 8 WNW 8 WNW 7 WNW
UV Index 1 2 3 4 5 4 3 2
Cloud Cover 11% 11% 11% 11% 11% 11% 11% 11%
Dew Point 40° 39° 40° 42° 42° 42° 43° 43°
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

Temperature History - Sep 23

more Historical Weather Data >
  Today Normal Record 9/23/2013
High 68° 71° 87° (1965) 62°
Low 45° 46° 28° (1955) 42°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:34 AM with 12:08 of sunlight, then sets at 6:42 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 5:56 AM with 12:22 of moolight, then sets at 6:18 PM

Top Story

Merrimack Weather Report

Boston: September Temperature Roller Coaster to Continue

September 21, 2014; 4:42 AM ET

In keeping with tradition, temperatures will continue their up-and-down cycle during the second half of September around Boston. more >

Tue. Dust & Dander

Tue. Wind Maps