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.

Fair

59°F

15°C

Humidity 96%
Wind Speed NW 3 mph
Barometer 30.07 in (1018.4 mb)
Dewpoint 58°F (14°C)
Visibility 10.00 mi
Last update 27 Aug 11:52 pm EDT
Extended Forecast for

South Harwich MA

  • Overnight

    Overnight: Clear, with a low around 59. Northwest wind around 7 mph.

    Low: 59 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 74. Light west wind becoming southwest 8 to 13 mph in the morning.

    High: 74 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy during the early evening, then gradual clearing, with a low around 63. South wind 8 to 11 mph.

    Low: 63 °F

    Gradual
    Clearing

  • Friday

    Friday: A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 75. South wind 10 to 14 mph. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 75 °F

    Chance
    Showers

  • Friday Night

    Friday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 59. South wind 7 to 10 mph. Chance of precipitation is 50%.

    Low: 59 °F

    Chance
    Showers

  • Saturday

    Saturday: A chance of showers, mainly before 10am. Mostly sunny, with a high near 74. West wind around 8 mph. Chance of precipitation is 30%.

    High: 74 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 58. Southwest wind around 6 mph becoming northwest after midnight.

    Low: 58 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 73. Northwest wind around 7 mph.

    High: 73 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 59. South wind around 5 mph becoming light and variable in the evening.

    Low: 59 °F

    Partly Cloudy

Detailed Forecast

Overnight
Clear, with a low around 59. Northwest wind around 7 mph.
Thursday
Sunny, with a high near 74. Light west wind becoming southwest 8 to 13 mph in the morning.
Thursday Night
Mostly cloudy during the early evening, then gradual clearing, with a low around 63. South wind 8 to 11 mph.
Friday
A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 75. South wind 10 to 14 mph. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 59. South wind 7 to 10 mph. Chance of precipitation is 50%.
Saturday
A chance of showers, mainly before 10am. Mostly sunny, with a high near 74. West wind around 8 mph. Chance of precipitation is 30%.
Saturday Night
Mostly clear, with a low around 58. Southwest wind around 6 mph becoming northwest after midnight.
Sunday
Sunny, with a high near 73. Northwest wind around 7 mph.
Sunday Night
Partly cloudy, with a low around 59. South wind around 5 mph becoming light and variable in the evening.
Labor Day
Sunny, with a high near 72. North wind 6 to 8 mph.
Monday Night
Partly cloudy, with a low around 59. East wind around 6 mph becoming west after midnight.
Tuesday
Mostly sunny, with a high near 72. Northeast wind 7 to 10 mph becoming east in the afternoon.
Tuesday Night
Partly cloudy, with a low around 60. Southeast wind around 8 mph.
Wednesday
Mostly sunny, with a high near 73. East wind 8 to 11 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:
6:21 pm EDT Aug 27, 2025
Forecast Valid:
12am EDT Aug 28, 2025-6pm EDT Sep 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