National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Chatham, Chatham Municipal Airport (KCQX)

Lat: 41.69°NLon: 69.99°WElev: 66ft.

Overcast

62°F

17°C

Humidity 75%
Wind Speed NE 6 mph
Barometer 30.25 in (1024.5 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 27 Jun 5:52 am EDT
Extended Forecast for

South Harwich MA

  • Today

    Today: Mostly sunny, with a high near 70. East wind 7 to 10 mph.

    High: 70 °F

    Mostly Sunny

  • Tonight

    Tonight: A slight chance of showers after 3am. Increasing clouds, with a low around 62. Southeast wind around 9 mph. Chance of precipitation is 20%.

    Low: 62 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

  • Saturday

    Saturday: A chance of showers, mainly before noon. Patchy fog before 5pm. Otherwise, mostly cloudy, with a high near 70. South wind 10 to 13 mph. Chance of precipitation is 50%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 70 °F

    Chance
    Showers and
    Patchy Fog

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms. Patchy fog. Otherwise, mostly cloudy, with a low around 65. South wind around 10 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 65 °F

    Chance
    Showers and
    Patchy Fog

  • Sunday

    Sunday: Mostly sunny, with a high near 75. West wind around 9 mph.

    High: 75 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 65. Northwest wind around 6 mph.

    Low: 65 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 75. South wind 5 to 10 mph.

    High: 75 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 67. South wind around 9 mph.

    Low: 67 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A chance of showers after 10am. Partly sunny, with a high near 79. Southwest wind 10 to 15 mph. Chance of precipitation is 30%.

    High: 79 °F

    Chance
    Showers

Detailed Forecast

Today
Mostly sunny, with a high near 70. East wind 7 to 10 mph.
Tonight
A slight chance of showers after 3am. Increasing clouds, with a low around 62. Southeast wind around 9 mph. Chance of precipitation is 20%.
Saturday
A chance of showers, mainly before noon. Patchy fog before 5pm. Otherwise, mostly cloudy, with a high near 70. South wind 10 to 13 mph. Chance of precipitation is 50%. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday Night
A chance of showers and thunderstorms. Patchy fog. Otherwise, mostly cloudy, with a low around 65. South wind around 10 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday
Mostly sunny, with a high near 75. West wind around 9 mph.
Sunday Night
Partly cloudy, with a low around 65. Northwest wind around 6 mph.
Monday
Mostly sunny, with a high near 75. South wind 5 to 10 mph.
Monday Night
Mostly cloudy, with a low around 67. South wind around 9 mph.
Tuesday
A chance of showers after 10am. Partly sunny, with a high near 79. Southwest wind 10 to 15 mph. Chance of precipitation is 30%.
Tuesday Night
A chance of showers before 1am. Mostly cloudy, with a low around 69. Southwest wind 9 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 30%.
Wednesday
Mostly sunny, with a high near 81. Southwest wind 8 to 10 mph.
Wednesday Night
Mostly clear, with a low around 67. West wind 6 to 9 mph.
Thursday
Sunny, with a high near 80. Southwest wind 6 to 10 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
South Harwich MA
 41.67°N 70.05°W (Elev. 10 ft)
Last Update:
3:07 am EDT Jun 27, 2025
Forecast Valid:
6am EDT Jun 27, 2025-6pm EDT Jul 3, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation