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.

Overcast

37°F

3°C

Humidity 62%
Wind Speed Vrbl 5 mph
Barometer 30.22 in (1023.4 mb)
Dewpoint 25°F (-4°C)
Visibility 10.00 mi
Wind Chill33°F (1°C)
Last update 19 Mar 4:52 pm EDT
Extended Forecast for

Northwest Harwich MA

  • Tonight

    Tonight: Cloudy during the early evening, then gradual clearing, with a low around 31. Calm wind becoming southwest around 5 mph after midnight.

    Low: 31 °F

    Gradual
    Clearing

  • Friday

    Friday: Mostly sunny through mid morning, then becoming cloudy, with a high near 47. Light and variable wind becoming south 5 to 9 mph in the afternoon. Winds could gust as high as 25 mph.

    High: 47 °F

    Becoming
    Cloudy

  • Friday Night

    Friday Night: Rain likely, mainly after 1am. Cloudy, with a low around 38. Southwest wind around 9 mph, with gusts as high as 37 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 38 °F

    Chance Rain
    then Rain
    Likely

  • Saturday

    Saturday: A chance of rain before 8am. Mostly cloudy, then gradually becoming sunny, with a high near 48. West wind 6 to 8 mph becoming north in the afternoon. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 48 °F

    Chance Rain
    then Mostly
    Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 35. Light and variable wind becoming northwest around 5 mph after midnight.

    Low: 35 °F

    Mostly Cloudy

  • Sunday

    Sunday: A slight chance of rain after 2pm. Mostly cloudy, with a high near 46. South wind 6 to 8 mph. Chance of precipitation is 20%.

    High: 46 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Sunday Night

    Sunday Night: Rain likely, mainly after 2am. Cloudy, with a low around 36. Southwest wind 5 to 7 mph. Chance of precipitation is 60%.

    Low: 36 °F

    Rain Likely

  • Monday

    Monday: Rain likely, mainly before 8am. Mostly cloudy, with a high near 47. North wind 8 to 10 mph, with gusts as high as 22 mph. Chance of precipitation is 60%.

    High: 47 °F

    Rain Likely
    then Chance
    Rain

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 28. North wind around 8 mph, with gusts as high as 20 mph.

    Low: 28 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Cloudy during the early evening, then gradual clearing, with a low around 31. Calm wind becoming southwest around 5 mph after midnight.
Friday
Mostly sunny through mid morning, then becoming cloudy, with a high near 47. Light and variable wind becoming south 5 to 9 mph in the afternoon. Winds could gust as high as 25 mph.
Friday Night
Rain likely, mainly after 1am. Cloudy, with a low around 38. Southwest wind around 9 mph, with gusts as high as 37 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday
A chance of rain before 8am. Mostly cloudy, then gradually becoming sunny, with a high near 48. West wind 6 to 8 mph becoming north in the afternoon. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Saturday Night
Mostly cloudy, with a low around 35. Light and variable wind becoming northwest around 5 mph after midnight.
Sunday
A slight chance of rain after 2pm. Mostly cloudy, with a high near 46. South wind 6 to 8 mph. Chance of precipitation is 20%.
Sunday Night
Rain likely, mainly after 2am. Cloudy, with a low around 36. Southwest wind 5 to 7 mph. Chance of precipitation is 60%.
Monday
Rain likely, mainly before 8am. Mostly cloudy, with a high near 47. North wind 8 to 10 mph, with gusts as high as 22 mph. Chance of precipitation is 60%.
Monday Night
Mostly cloudy, with a low around 28. North wind around 8 mph, with gusts as high as 20 mph.
Tuesday
Mostly sunny, with a high near 39. North wind around 8 mph.
Tuesday Night
Partly cloudy, with a low around 30. Southwest wind 3 to 6 mph.
Wednesday
A chance of rain. Partly sunny, with a high near 43. Southwest wind 7 to 9 mph. Chance of precipitation is 30%.
Wednesday Night
Mostly cloudy, with a low around 30. Northwest wind around 7 mph.
Thursday
Partly sunny, with a high near 46. Northeast wind 6 to 9 mph becoming south in the afternoon. Winds could gust as high as 20 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:
3:55 pm EDT Mar 19, 2026
Forecast Valid:
5pm EDT Mar 19, 2026-6pm EDT Mar 26, 2026
 
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