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

56°F

13°C

Humidity 97%
Wind Speed Vrbl 5 mph
Barometer 30.10 in (1019.4 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 28 Aug 2:52 am EDT
Extended Forecast for

Harwich Port MA

  • Overnight

    Overnight: Clear, with a low around 58. West wind around 6 mph.

    Low: 58 °F

    Clear

  • Thursday

    Thursday: Increasing clouds, with a high near 72. Light and variable wind becoming southwest 6 to 11 mph in the morning.

    High: 72 °F

    Increasing
    Clouds

  • Thursday Night

    Thursday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 65. South wind 11 to 13 mph.

    Low: 65 °F

    Decreasing
    Clouds

  • Friday

    Friday: A chance of showers, with thunderstorms also possible after 3pm. Partly sunny, with a high near 73. South wind 10 to 13 mph. Chance of precipitation is 30%.

    High: 73 °F

    Chance
    Showers

  • Friday Night

    Friday Night: A chance of showers and thunderstorms before 2am, then a slight chance of showers between 2am and 3am. Mostly cloudy, with a low around 59. Southwest wind 6 to 8 mph. Chance of precipitation is 50%.

    Low: 59 °F

    Chance
    T-storms then
    Slight Chance
    T-storms

  • Saturday

    Saturday: A slight chance of showers between 9am and noon. Mostly sunny, with a high near 74. West wind around 8 mph. Chance of precipitation is 20%.

    High: 74 °F

    Slight Chance
    Showers then
    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 58. Southwest wind around 6 mph becoming northwest after midnight.

    Low: 58 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 73. Northwest wind around 7 mph becoming northeast in the afternoon.

    High: 73 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 59. Light and variable wind.

    Low: 59 °F

    Mostly Clear

Detailed Forecast

Overnight
Clear, with a low around 58. West wind around 6 mph.
Thursday
Increasing clouds, with a high near 72. Light and variable wind becoming southwest 6 to 11 mph in the morning.
Thursday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 65. South wind 11 to 13 mph.
Friday
A chance of showers, with thunderstorms also possible after 3pm. Partly sunny, with a high near 73. South wind 10 to 13 mph. Chance of precipitation is 30%.
Friday Night
A chance of showers and thunderstorms before 2am, then a slight chance of showers between 2am and 3am. Mostly cloudy, with a low around 59. Southwest wind 6 to 8 mph. Chance of precipitation is 50%.
Saturday
A slight chance of showers between 9am and noon. Mostly sunny, with a high near 74. West wind around 8 mph. Chance of precipitation is 20%.
Saturday Night
Partly cloudy, with a low around 58. Southwest wind around 6 mph becoming northwest after midnight.
Sunday
Sunny, with a high near 73. Northwest wind around 7 mph becoming northeast in the afternoon.
Sunday Night
Mostly clear, with a low around 59. Light and variable wind.
Labor Day
Sunny, with a high near 74. North wind 6 to 8 mph.
Monday Night
Mostly clear, with a low around 60. East wind around 5 mph becoming light and variable in the evening.
Tuesday
Sunny, with a high near 74. Northeast wind 6 to 8 mph becoming east in the afternoon.
Tuesday Night
Partly cloudy, with a low around 60. Southeast wind around 6 mph.
Wednesday
Mostly sunny, with a high near 73. East wind 6 to 10 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:
2:28 am EDT Aug 28, 2025
Forecast Valid:
3am EDT Aug 28, 2025-6pm EDT Sep 3, 2025
 
Forecast Discussion
 
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Additional Resources

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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