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

71°F

22°C

Humidity 81%
Wind Speed SW 8 mph
Barometer 30.03 in (1017.1 mb)
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Last update 26 Jun 4:52 pm EDT
Extended Forecast for

Harwich Port MA

  • Tonight

    Tonight: Patchy fog after midnight. Otherwise, mostly cloudy, with a low around 64. Southwest wind 5 to 8 mph.

    Low: 64 °F

    Mostly Cloudy
    then Patchy
    Fog

  • Saturday

    Saturday: A chance of showers, mainly after noon. Partly sunny, with a high near 74. Calm wind becoming southeast around 5 mph in the afternoon. Chance of precipitation is 30%.

    High: 74 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: A slight chance of showers before 3am. Mostly cloudy, with a low around 62. Light southwest wind. Chance of precipitation is 20%.

    Low: 62 °F

    Slight Chance
    Showers

  • Sunday

    Sunday: Mostly cloudy, then gradually becoming sunny, with a high near 75. Northeast wind around 6 mph.

    High: 75 °F

    Decreasing
    Clouds

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 62. Calm wind.

    Low: 62 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 79. Calm wind becoming southeast around 6 mph in the afternoon.

    High: 79 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 66. Southwest wind 3 to 5 mph.

    Low: 66 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 79. South wind 5 to 11 mph.

    High: 79 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A chance of showers after 10pm. Mostly cloudy, with a low around 69. Southwest wind around 8 mph. Chance of precipitation is 30%.

    Low: 69 °F

    Chance
    Showers

Detailed Forecast

Tonight
Patchy fog after midnight. Otherwise, mostly cloudy, with a low around 64. Southwest wind 5 to 8 mph.
Saturday
A chance of showers, mainly after noon. Partly sunny, with a high near 74. Calm wind becoming southeast around 5 mph in the afternoon. Chance of precipitation is 30%.
Saturday Night
A slight chance of showers before 3am. Mostly cloudy, with a low around 62. Light southwest wind. Chance of precipitation is 20%.
Sunday
Mostly cloudy, then gradually becoming sunny, with a high near 75. Northeast wind around 6 mph.
Sunday Night
Partly cloudy, with a low around 62. Calm wind.
Monday
Sunny, with a high near 79. Calm wind becoming southeast around 6 mph in the afternoon.
Monday Night
Partly cloudy, with a low around 66. Southwest wind 3 to 5 mph.
Tuesday
Mostly sunny, with a high near 79. South wind 5 to 11 mph.
Tuesday Night
A chance of showers after 10pm. Mostly cloudy, with a low around 69. Southwest wind around 8 mph. Chance of precipitation is 30%.
Wednesday
A chance of showers before 11am. Partly sunny, with a high near 82. South wind 9 to 13 mph. Chance of precipitation is 30%.
Wednesday Night
A chance of showers. Partly cloudy, with a low around 71. Southwest wind 7 to 9 mph. Chance of precipitation is 30%.
Thursday
Mostly sunny, with a high near 81. Southwest wind 7 to 10 mph.
Thursday Night
Partly cloudy, with a low around 72. Southwest wind around 6 mph.
Friday
Mostly sunny, with a high near 82. West wind 5 to 7 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:
2:29 pm EDT Jun 26, 2026
Forecast Valid:
5pm EDT Jun 26, 2026-6pm EDT Jul 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