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

73°F

23°C

Humidity 96%
Wind Speed SW 6 mph
Barometer 30.06 in (1018.0 mb)
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Last update 15 Jul 10:52 pm EDT
Extended Forecast for

Harwich Port MA

  • Tonight

    Tonight: Patchy fog after midnight. Otherwise, cloudy, with a low around 70. Southwest wind around 6 mph.

    Low: 70 °F

    Patchy Fog

  • Wednesday

    Wednesday: Patchy fog before 10am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 82. Southwest wind 5 to 9 mph.

    High: 82 °F

    Patchy Fog
    then Mostly
    Sunny

  • Wednesday Night

    Wednesday Night: Patchy fog after 10pm. Otherwise, mostly cloudy, with a low around 73. Southwest wind around 8 mph.

    Low: 73 °F

    Patchy Fog

  • Thursday

    Thursday: A slight chance of showers and thunderstorms before 2pm, then a slight chance of showers between 2pm and 5pm, then a slight chance of showers and thunderstorms after 5pm. Mostly cloudy, with a high near 82. Southwest wind 9 to 14 mph. Chance of precipitation is 20%.

    High: 82 °F

    Slight Chance
    T-storms

  • Thursday Night

    Thursday Night: A slight chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 3am. Mostly cloudy, with a low around 72. Southwest wind 9 to 11 mph. Chance of precipitation is 20%.

    Low: 72 °F

    Slight Chance
    T-storms then
    Slight Chance
    Showers

  • Friday

    Friday: Mostly sunny, with a high near 82. West wind 8 to 10 mph becoming north in the afternoon.

    High: 82 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 66. North wind around 6 mph.

    Low: 66 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 78. Northeast wind 6 to 8 mph.

    High: 78 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 67. South wind around 6 mph.

    Low: 67 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Patchy fog after midnight. Otherwise, cloudy, with a low around 70. Southwest wind around 6 mph.
Wednesday
Patchy fog before 10am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 82. Southwest wind 5 to 9 mph.
Wednesday Night
Patchy fog after 10pm. Otherwise, mostly cloudy, with a low around 73. Southwest wind around 8 mph.
Thursday
A slight chance of showers and thunderstorms before 2pm, then a slight chance of showers between 2pm and 5pm, then a slight chance of showers and thunderstorms after 5pm. Mostly cloudy, with a high near 82. Southwest wind 9 to 14 mph. Chance of precipitation is 20%.
Thursday Night
A slight chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 3am. Mostly cloudy, with a low around 72. Southwest wind 9 to 11 mph. Chance of precipitation is 20%.
Friday
Mostly sunny, with a high near 82. West wind 8 to 10 mph becoming north in the afternoon.
Friday Night
Partly cloudy, with a low around 66. North wind around 6 mph.
Saturday
Sunny, with a high near 78. Northeast wind 6 to 8 mph.
Saturday Night
Mostly cloudy, with a low around 67. South wind around 6 mph.
Sunday
A chance of showers after 1pm. Partly sunny, with a high near 79. South wind 6 to 11 mph. Chance of precipitation is 30%.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 68. South wind 7 to 9 mph. Chance of precipitation is 40%.
Monday
Mostly sunny, with a high near 79. North wind around 9 mph.
Monday Night
Partly cloudy, with a low around 66. Southeast wind around 6 mph becoming northwest in the evening.
Tuesday
Mostly sunny, with a high near 77. Northeast wind 6 to 8 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
Harwich Port MA
 41.67°N 70.08°W (Elev. 10 ft)
Last Update:
3:27 pm EDT Jul 15, 2025
Forecast Valid:
11pm EDT Jul 15, 2025-6pm EDT Jul 22, 2025
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation