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

78°F

26°C

Humidity 85%
Wind Speed Vrbl 7 mph
Barometer 29.97 in (1015.1 mb)
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 28 Aug 3:52 pm EDT
Extended Forecast for

Harwich Port MA

  • Tonight

    Tonight: Cloudy, then gradually becoming partly cloudy, with a low around 66. Southwest wind 6 to 10 mph becoming north after midnight.

    Low: 66 °F

    Decreasing
    Clouds

  • Saturday

    Saturday: Mostly sunny, with a high near 72. North wind 7 to 11 mph.

    High: 72 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 66. Light and variable wind becoming southwest around 6 mph in the evening.

    Low: 66 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 78. Southwest wind 7 to 14 mph.

    High: 78 °F

    Sunny

  • Sunday Night

    Sunday Night: A chance of showers, mainly after 9pm. Mostly cloudy, with a low around 68. Southwest wind 10 to 13 mph. Chance of precipitation is 50%.

    Low: 68 °F

    Chance
    Showers

  • Monday

    Monday: Mostly sunny, with a high near 73. Northwest wind around 9 mph becoming northeast in the afternoon.

    High: 73 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 64. Southeast wind 3 to 5 mph.

    Low: 64 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 74. Southeast wind 6 to 10 mph.

    High: 74 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: A chance of showers after 10pm. Mostly cloudy, with a low around 66. Southeast wind around 9 mph. Chance of precipitation is 40%.

    Low: 66 °F

    Chance
    Showers

Detailed Forecast

Tonight
Cloudy, then gradually becoming partly cloudy, with a low around 66. Southwest wind 6 to 10 mph becoming north after midnight.
Saturday
Mostly sunny, with a high near 72. North wind 7 to 11 mph.
Saturday Night
Mostly clear, with a low around 66. Light and variable wind becoming southwest around 6 mph in the evening.
Sunday
Sunny, with a high near 78. Southwest wind 7 to 14 mph.
Sunday Night
A chance of showers, mainly after 9pm. Mostly cloudy, with a low around 68. Southwest wind 10 to 13 mph. Chance of precipitation is 50%.
Monday
Mostly sunny, with a high near 73. Northwest wind around 9 mph becoming northeast in the afternoon.
Monday Night
Partly cloudy, with a low around 64. Southeast wind 3 to 5 mph.
Tuesday
Partly sunny, with a high near 74. Southeast wind 6 to 10 mph.
Tuesday Night
A chance of showers after 10pm. Mostly cloudy, with a low around 66. Southeast wind around 9 mph. Chance of precipitation is 40%.
Wednesday
A chance of showers. Mostly cloudy, with a high near 77. South wind 10 to 14 mph. Chance of precipitation is 50%.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 67. South wind 8 to 10 mph. Chance of precipitation is 50%.
Thursday
A chance of showers. Mostly cloudy, with a high near 78. Southwest wind 9 to 11 mph. Chance of precipitation is 30%.
Thursday Night
A chance of showers. Mostly cloudy, with a low around 65. Southwest wind around 8 mph becoming northwest after midnight. Chance of precipitation is 30%.
Friday
Partly sunny, with a high near 74. North wind 9 to 11 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Harwich Port MA
 41.67°N 70.08°W (Elev. 10 ft)
Last Update:
2:11 pm EDT Aug 28, 2026
Forecast Valid:
4pm EDT Aug 28, 2026-6pm EDT Sep 4, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation