• Early AM

    Aug 31

    Lo 66°

    Partly cloudy

    Hair Frizz Weather
    • Wind
      Gust
      8 mph
    • Precip
      4%
    • Hours of Precip
      0
    more
  • Today

    Aug 31

    89°Lo 63°

    Partly sunny, warm and humid

    Advisory for hair frizz
    • Wind
      Gust
      12 mph
    • Precip
      8%
    • Hours of Precip
      0
  • Tue

    Sep 1

    84°Lo 62°

    Humid with plenty of sunshine

    Advisory for hair frizz
    • Wind
      Gust
      9 mph
    • Precip
      8%
    • Hours of Precip
      0
    more
  • Wed

    Sep 2

    90°Lo 66°

    Mostly sunny and hot

    Warning for hair frizz
    • Wind
      Gust
      12 mph
    • Precip
      13%
    • Hours of Precip
      0
    more
  • Thu

    Sep 3

    87°Lo 63°

    Partly sunny, a t-storm; warm

    Warning for hair frizz
    • Wind
      Gust
      8 mph
    • Precip
      40%
    • Hours of Precip
      0.5
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Mon
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  3am 4am 5am 6am 7am 8am 9am 10am
Forecast
Partly Cloudy
Mostly Clear
Mostly Clear
Mostly Clear
Mostly Sunny
Mostly Sunny
Mostly Sunny
Mostly Sunny
Temp (°F) 69° 67° 66° 67° 69° 71° 76° 79°
RealFeel® 68° 67° 66° 66° 68° 72° 79° 83°
Humidity 84% 84% 90% 87% 81% 82% 74% 62%
   
  3am 4am 5am 6am 7am 8am 9am 10am
Rain
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Snow
 
0%
 
0%
 
0%
 
0%
 
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Ice
 
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  3am 4am 5am 6am 7am 8am 9am 10am
Wind (mph) 4 NW 4 NW 5 WNW 5 WNW 5 W 6 W 7 W 8 W
UV Index 0 0 0 0 0 1 2 3
Cloud Cover 34% 26% 26% 26% 26% 26% 26% 26%
Dew Point 64° 63° 63° 63° 63° 66° 67° 65°
Middle Grid line 80 F Middle Grid line 75 F Middle Grid line 70 F Middle Grid line 65 F

Temperature History - Aug 31

more Historical Weather Data >
  Today Normal Record 8/31/2014
High 89° 78° N/A 82°
Low 63° 57° N/A 64°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:09 AM with 13:12 of sunlight, then sets at 7:21 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 8:32 PM with 13:00 of moolight, then sets at 9:32 AM

Waltham Weather Report

Boston: Sizzling Heat to Start September

August 31, 2015; 1:00 AM ET

September will get off to a hot and humid start around Boston this week. more >

The History Behind the UV Index

Nov 12, 2012; 5:00 AM ET The UV index has been around since the early 1990s. It was created to help you plan outdoor activities in hopes to limit overexposure to the sun. Jeannette Calle has more.

Mon. Hair Frizz

Mon. Wind Maps

Mon. UV Index