• Today

    Sep 18

    71°Lo 50°

    Sunshine

    Excellent for lawn mowing
    • Hours of Precip
      0
    • Precip
      4%
    • Hi
      RealFeel
      75°
    more
  • Fri

    Sep 19

    61°Lo 48°

    Partly sunny and cooler

    Very Good for lawn mowing
    • Hours of Precip
      0
    • Precip
      4%
    • Hi
      RealFeel
      61°
  • Sat

    Sep 20

    68°Lo 59°

    Sun mixing with clouds

    Excellent for lawn mowing
    • Hours of Precip
      0
    • Precip
      6%
    • Hi
      RealFeel
      69°
    more
  • Sun

    Sep 21

    72°Lo 61°

    Some sun, then clouds

    Excellent for lawn mowing
    • Hours of Precip
      0
    • Precip
      25%
    • Hi
      RealFeel
      74°
    more
  • Mon

    Sep 22

    71°Lo 52°

    A shower possible

    Very Good for lawn mowing
    • Hours of Precip
      0
    • Precip
      30%
    • Hi
      RealFeel
      71°
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Fri
3am
4am 5am 6am 7am 8am 9am 10am
  3am 4am 5am 6am 7am 8am 9am 10am
Forecast
Mostly Clear
Mostly Clear
Mostly Clear
Mostly Clear
Mostly Sunny
Mostly Sunny
Mostly Sunny
Mostly Sunny
Temp (°F) 55° 54° 54° 50° 54° 56° 58° 59°
RealFeel® 47° 46° 45° 41° 46° 49° 53° 55°
Humidity 77% 73% 71% 79% 69% 63% 57% 53%
   
  3am 4am 5am 6am 7am 8am 9am 10am
Rain
 
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0%
 
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0%
 
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0%
Snow
 
0%
 
0%
 
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Ice
 
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  3am 4am 5am 6am 7am 8am 9am 10am
Wind (mph) 11 NNE 13 NNE 13 NNE 13 NNE 12 NNE 12 NNE 12 NNE 11 NNE
UV Index 0 0 0 0 0 0 1 2
Cloud Cover 26% 26% 26% 26% 26% 26% 26% 26%
Dew Point 47° 46° 45° 44° 44° 44° 43° 41°
Middle Grid line 60 F Middle Grid line 55 F Middle Grid line 50 F Middle Grid line 45 F

Temperature History - Sep 19

more Historical Weather Data >
  Today Normal Record 9/19/2013
High 61° 69° N/A 75°
Low 48° 57° N/A 54°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:24 AM with 12:19 of sunlight, then sets at 6:43 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 2:04 AM with 14:07 of moolight, then sets at 4:11 PM

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Chatham Weather Report

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September 18, 2014; 12:02 PM ET

Rainfall will be scarce around Boston this week, but cool air will be plentiful. more >

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Fri. Overnight Freeze

Fri. Degree Days

Fri. Evapotranspiration