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

74°F

23°C

Humidity 97%
Wind Speed SW 5 mph
Barometer 30.10 in (1019.3 mb)
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Last update 15 Jul 9:52 am EDT
Extended Forecast for

Harwich Port MA

  • Today

    Today: A slight chance of showers and thunderstorms before 10am. Patchy fog before noon, then patchy fog after 3pm. Otherwise, partly sunny, with a high near 80. Southwest wind 7 to 11 mph. Chance of precipitation is 20%.

    High: 80 °F

    Slight Chance
    T-storms and
    Patchy Fog
    then Patchy
    Fog

  • Tonight

    Tonight: Patchy fog before 9pm, then patchy fog after 10pm. Otherwise, mostly cloudy, with a low around 70. Southwest wind 6 to 9 mph.

    Low: 70 °F

    Patchy Fog

  • Wednesday

    Wednesday: Partly sunny, with a high near 81. South wind 7 to 10 mph.

    High: 81 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 71. Southwest wind around 9 mph.

    Low: 71 °F

    Mostly Cloudy

  • Thursday

    Thursday: A slight chance of showers and thunderstorms, mainly between 2pm and 3pm. Mostly cloudy, with a high near 82. Southwest wind 10 to 14 mph. Chance of precipitation is 20%.

    High: 82 °F

    Slight Chance
    T-storms

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 72. Southwest wind around 11 mph.

    Low: 72 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 84. West wind 8 to 10 mph.

    High: 84 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 68. North wind around 6 mph.

    Low: 68 °F

    Mostly Cloudy

  • Saturday

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

    High: 78 °F

    Sunny

Detailed Forecast

Today
A slight chance of showers and thunderstorms before 10am. Patchy fog before noon, then patchy fog after 3pm. Otherwise, partly sunny, with a high near 80. Southwest wind 7 to 11 mph. Chance of precipitation is 20%.
Tonight
Patchy fog before 9pm, then patchy fog after 10pm. Otherwise, mostly cloudy, with a low around 70. Southwest wind 6 to 9 mph.
Wednesday
Partly sunny, with a high near 81. South wind 7 to 10 mph.
Wednesday Night
Mostly cloudy, with a low around 71. Southwest wind around 9 mph.
Thursday
A slight chance of showers and thunderstorms, mainly between 2pm and 3pm. Mostly cloudy, with a high near 82. Southwest wind 10 to 14 mph. Chance of precipitation is 20%.
Thursday Night
Partly cloudy, with a low around 72. Southwest wind around 11 mph.
Friday
Mostly sunny, with a high near 84. West wind 8 to 10 mph.
Friday Night
Mostly cloudy, with a low around 68. North wind around 6 mph.
Saturday
Sunny, with a high near 78. Northeast wind around 8 mph.
Saturday Night
Partly cloudy, with a low around 67. Southeast wind around 5 mph becoming light and variable in the evening.
Sunday
Partly sunny, with a high near 80. South wind 6 to 10 mph.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 68. South wind around 8 mph. Chance of precipitation is 40%.
Monday
A chance of showers. Mostly sunny, with a high near 79. West wind 8 to 10 mph becoming south in the afternoon. 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:
7:45 am EDT Jul 15, 2025
Forecast Valid:
9am EDT Jul 15, 2025-6pm EDT Jul 21, 2025
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation