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

58°F

14°C

Humidity 93%
Wind Speed Calm
Barometer 29.99 in (1015.5 mb)
Dewpoint 56°F (13°C)
Visibility 10.00 mi
Last update 22 Jun 3:52 am EDT
Extended Forecast for

Northwest Harwich MA

  • Today

    Today: Increasing clouds, with a high near 82. Calm wind becoming south 5 to 8 mph in the afternoon.

    High: 82 °F

    Increasing
    Clouds

  • Tonight

    Tonight: Showers likely, with thunderstorms also possible after 5am. Patchy fog after midnight. Otherwise, cloudy, with a low around 67. South wind 6 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 67 °F

    Showers
    Likely and
    Patchy Fog

  • Tuesday

    Tuesday: Showers and possibly a thunderstorm before 2pm, then a chance of showers. Some of the storms could produce heavy rainfall. Patchy fog before 10am. High near 82. South wind 8 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New rainfall amounts between three quarters and one inch possible.

    High: 82 °F

    Heavy Rain
    and Patchy
    Fog

  • Tuesday Night

    Tuesday Night: A chance of showers, mainly before 8pm. Mostly cloudy, with a low around 65. Calm wind becoming northwest around 5 mph after midnight. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 65 °F

    Chance
    Showers then
    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 86. Northwest wind around 7 mph.

    High: 86 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 68. West wind 3 to 6 mph.

    Low: 68 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 85. Calm wind becoming south 5 to 8 mph in the afternoon.

    High: 85 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 69. South wind around 6 mph.

    Low: 69 °F

    Partly Cloudy

  • Friday

    Friday: A chance of showers after 7am. Partly sunny, with a high near 80. South wind 6 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 40%.

    High: 80 °F

    Chance
    Showers

Detailed Forecast

Today
Increasing clouds, with a high near 82. Calm wind becoming south 5 to 8 mph in the afternoon.
Tonight
Showers likely, with thunderstorms also possible after 5am. Patchy fog after midnight. Otherwise, cloudy, with a low around 67. South wind 6 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Tuesday
Showers and possibly a thunderstorm before 2pm, then a chance of showers. Some of the storms could produce heavy rainfall. Patchy fog before 10am. High near 82. South wind 8 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New rainfall amounts between three quarters and one inch possible.
Tuesday Night
A chance of showers, mainly before 8pm. Mostly cloudy, with a low around 65. Calm wind becoming northwest around 5 mph after midnight. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday
Sunny, with a high near 86. Northwest wind around 7 mph.
Wednesday Night
Mostly clear, with a low around 68. West wind 3 to 6 mph.
Thursday
Sunny, with a high near 85. Calm wind becoming south 5 to 8 mph in the afternoon.
Thursday Night
Partly cloudy, with a low around 69. South wind around 6 mph.
Friday
A chance of showers after 7am. Partly sunny, with a high near 80. South wind 6 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 40%.
Friday Night
A chance of showers. Mostly cloudy, with a low around 70. Southwest wind 5 to 8 mph. Chance of precipitation is 40%.
Saturday
A chance of showers. Partly sunny, with a high near 80. Southwest wind 3 to 7 mph. Chance of precipitation is 30%.
Saturday Night
Partly cloudy, with a low around 69. Southwest wind 3 to 5 mph.
Sunday
Sunny, with a high near 80. Light and variable wind becoming northwest around 6 mph in the morning.
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ABOUT THIS FORECAST

 
Point Forecast:
Northwest Harwich MA
 41.7°N 70.1°W (Elev. 43 ft)
Last Update:
2:30 am EDT Jun 22, 2026
Forecast Valid:
4am EDT Jun 22, 2026-6pm EDT Jun 28, 2026
 
Forecast Discussion
 
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Additional Resources

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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