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.

Fog

62°F

17°C

Humidity 100%
Wind Speed Calm
Barometer 30.11 in (1019.8 mb)
Dewpoint 62°F (17°C)
Visibility 0.25 mi
Last update 14 Jul 6:52 am EDT
Extended Forecast for

Northwest Harwich MA

  • Today

    Today: Patchy fog before 10am. Otherwise, mostly sunny, with a high near 79. Calm wind becoming south 5 to 8 mph in the morning.

    High: 79 °F

    Patchy Fog
    then Mostly
    Sunny

  • Tonight

    Tonight: A slight chance of showers and thunderstorms after 3am. Patchy fog after 3am. Otherwise, mostly cloudy, with a low around 69. Southwest wind around 6 mph. Chance of precipitation is 20%.

    Low: 69 °F

    Partly Cloudy
    then Slight
    Chance
    T-storms and
    Patchy Fog

  • Tuesday

    Tuesday: A chance of showers and thunderstorms before 8am, then a slight chance of showers between 8am and 2pm. Mostly cloudy, with a high near 82. Southwest wind 6 to 9 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 82 °F

    Chance
    Showers

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 70. Southwest wind around 6 mph.

    Low: 70 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 84. Southwest wind 5 to 10 mph.

    High: 84 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 71. Southwest wind around 7 mph.

    Low: 71 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 85. Southwest wind 6 to 11 mph.

    High: 85 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 71. Southwest wind 6 to 8 mph.

    Low: 71 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 86. Southwest wind 6 to 9 mph.

    High: 86 °F

    Mostly Sunny

Detailed Forecast

Today
Patchy fog before 10am. Otherwise, mostly sunny, with a high near 79. Calm wind becoming south 5 to 8 mph in the morning.
Tonight
A slight chance of showers and thunderstorms after 3am. Patchy fog after 3am. Otherwise, mostly cloudy, with a low around 69. Southwest wind around 6 mph. Chance of precipitation is 20%.
Tuesday
A chance of showers and thunderstorms before 8am, then a slight chance of showers between 8am and 2pm. Mostly cloudy, with a high near 82. Southwest wind 6 to 9 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tuesday Night
Mostly cloudy, with a low around 70. Southwest wind around 6 mph.
Wednesday
Mostly sunny, with a high near 84. Southwest wind 5 to 10 mph.
Wednesday Night
Mostly cloudy, with a low around 71. Southwest wind around 7 mph.
Thursday
Partly sunny, with a high near 85. Southwest wind 6 to 11 mph.
Thursday Night
Mostly cloudy, with a low around 71. Southwest wind 6 to 8 mph.
Friday
Mostly sunny, with a high near 86. Southwest wind 6 to 9 mph.
Friday Night
Mostly cloudy, with a low around 69. West wind around 6 mph becoming northwest after midnight.
Saturday
Mostly sunny, with a high near 81. North wind 6 to 8 mph.
Saturday Night
Partly cloudy, with a low around 67. Light and variable wind.
Sunday
Mostly sunny, with a high near 81. South wind 5 to 8 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Northwest Harwich MA
 41.7°N 70.1°W (Elev. 43 ft)
Last Update:
6:28 am EDT Jul 14, 2025
Forecast Valid:
7am EDT Jul 14, 2025-6pm EDT Jul 20, 2025
 
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