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.

Mostly Cloudy

67°F

19°C

Humidity 100%
Wind Speed Calm
Barometer 29.98 in (1015.4 mb)
Dewpoint 67°F (19°C)
Visibility 8.00 mi
Last update 28 Aug 4:52 am EDT
Extended Forecast for

Harwich Port MA

  • Today

    Today: Mostly cloudy, with a high near 78. South wind 5 to 10 mph.

    High: 78 °F

    Mostly Cloudy

  • Tonight

    Tonight: Mostly cloudy, with a low around 66. Southwest wind 5 to 8 mph becoming north after midnight.

    Low: 66 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 72. North wind 8 to 11 mph.

    High: 72 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 66. Calm wind becoming southwest around 5 mph after midnight.

    Low: 66 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 78. Southwest wind 6 to 14 mph.

    High: 78 °F

    Sunny

  • Sunday Night

    Sunday Night: A slight chance of showers after 2am. Mostly cloudy, with a low around 68. Southwest wind around 11 mph. Chance of precipitation is 20%.

    Low: 68 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

  • Monday

    Monday: Mostly sunny, with a high near 75. Northwest wind around 9 mph becoming northeast in the afternoon.

    High: 75 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 65. Southeast wind 3 to 5 mph.

    Low: 65 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A chance of showers after noon. Partly sunny, with a high near 75. Southeast wind 6 to 10 mph. Chance of precipitation is 30%.

    High: 75 °F

    Partly Sunny
    then Chance
    Showers

Detailed Forecast

Today
Mostly cloudy, with a high near 78. South wind 5 to 10 mph.
Tonight
Mostly cloudy, with a low around 66. Southwest wind 5 to 8 mph becoming north after midnight.
Saturday
Mostly sunny, with a high near 72. North wind 8 to 11 mph.
Saturday Night
Mostly clear, with a low around 66. Calm wind becoming southwest around 5 mph after midnight.
Sunday
Sunny, with a high near 78. Southwest wind 6 to 14 mph.
Sunday Night
A slight chance of showers after 2am. Mostly cloudy, with a low around 68. Southwest wind around 11 mph. Chance of precipitation is 20%.
Monday
Mostly sunny, with a high near 75. Northwest wind around 9 mph becoming northeast in the afternoon.
Monday Night
Partly cloudy, with a low around 65. Southeast wind 3 to 5 mph.
Tuesday
A chance of showers after noon. Partly sunny, with a high near 75. Southeast wind 6 to 10 mph. Chance of precipitation is 30%.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 66. Southeast wind around 8 mph. Chance of precipitation is 50%.
Wednesday
A chance of showers. Partly sunny, with a high near 76. Southeast wind 9 to 13 mph. Chance of precipitation is 40%.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 67. South wind 8 to 10 mph. Chance of precipitation is 40%.
Thursday
A chance of showers. Partly sunny, with a high near 76. South wind 9 to 11 mph. Chance of precipitation is 30%.
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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:
4:12 am EDT Aug 28, 2026
Forecast Valid:
5am EDT Aug 28, 2026-6pm EDT Sep 3, 2026
 
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