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

61°F

16°C

Humidity 81%
Wind Speed NW 5 mph
Barometer 29.71 in (1006.3 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 12 Oct 4:52 pm EDT
Extended Forecast for

South Harwich MA

  • Tonight

    Tonight: Increasing clouds, with a low around 54. Light and variable wind becoming northeast 5 to 10 mph in the evening.

    Low: 54 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: Cloudy, with a high near 66. East wind 11 to 13 mph becoming southeast in the afternoon.

    High: 66 °F

    Cloudy

  • Tuesday Night

    Tuesday Night: A chance of showers, mainly between 9pm and 2am. Cloudy, then gradually becoming partly cloudy, with a low around 60. South wind 11 to 15 mph, with gusts as high as 28 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 60 °F

    Chance
    Showers

  • Wednesday

    Wednesday: Patchy fog before 9am. Otherwise, mostly sunny, with a high near 70. West wind 10 to 14 mph.

    High: 70 °F

    Patchy Fog
    then Mostly
    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 53. Northwest wind 7 to 10 mph.

    Low: 53 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 60. North wind 13 to 16 mph.

    High: 60 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 51. North wind around 5 mph becoming light and variable in the evening.

    Low: 51 °F

    Partly Cloudy

  • Friday

    Friday: Showers, mainly after noon. High near 66. South wind 9 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 80%.

    High: 66 °F

    Chance
    Showers then
    Showers

  • Friday Night

    Friday Night: Showers, mainly before 1am. Low around 47. Breezy, with a west wind 18 to 23 mph, with gusts as high as 36 mph. Chance of precipitation is 80%.

    Low: 47 °F

    Showers and
    Breezy

Detailed Forecast

Tonight
Increasing clouds, with a low around 54. Light and variable wind becoming northeast 5 to 10 mph in the evening.
Tuesday
Cloudy, with a high near 66. East wind 11 to 13 mph becoming southeast in the afternoon.
Tuesday Night
A chance of showers, mainly between 9pm and 2am. Cloudy, then gradually becoming partly cloudy, with a low around 60. South wind 11 to 15 mph, with gusts as high as 28 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday
Patchy fog before 9am. Otherwise, mostly sunny, with a high near 70. West wind 10 to 14 mph.
Wednesday Night
Partly cloudy, with a low around 53. Northwest wind 7 to 10 mph.
Thursday
Sunny, with a high near 60. North wind 13 to 16 mph.
Thursday Night
Partly cloudy, with a low around 51. North wind around 5 mph becoming light and variable in the evening.
Friday
Showers, mainly after noon. High near 66. South wind 9 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 80%.
Friday Night
Showers, mainly before 1am. Low around 47. Breezy, with a west wind 18 to 23 mph, with gusts as high as 36 mph. Chance of precipitation is 80%.
Saturday
Mostly sunny, with a high near 55. Windy, with a northwest wind 21 to 26 mph, with gusts as high as 38 mph.
Saturday Night
Partly cloudy, with a low around 42. Breezy, with a northwest wind 18 to 22 mph, with gusts as high as 33 mph.
Sunday
Sunny, with a high near 56. Northwest wind 13 to 17 mph, with gusts as high as 28 mph.
Sunday Night
Partly cloudy, with a low around 48. Southwest wind 7 to 9 mph.
Monday
Mostly sunny, with a high near 61. Southwest wind 9 to 15 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
South Harwich MA
 41.67°N 70.05°W (Elev. 10 ft)
Last Update:
2:04 pm EDT Oct 12, 2026
Forecast Valid:
5pm EDT Oct 12, 2026-6pm EDT Oct 19, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation