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.

Mostly Cloudy

32°F

0°C

Humidity 59%
Wind Speed Vrbl 6 G 23 mph
Barometer 29.82 in (1010.0 mb)
Dewpoint 19°F (-7°C)
Visibility 10.00 mi
Wind Chill26°F (-3°C)
Last update 12 Jan 2:52 am EST
Extended Forecast for

South Harwich MA

  • Overnight

    Overnight: Partly cloudy, with a low around 25. Breezy, with a west wind around 20 mph, with gusts as high as 39 mph.

    Low: 25 °F

    Partly Cloudy
    and Breezy

  • Monday

    Monday: Mostly sunny, with a high near 37. West wind 11 to 17 mph, with gusts as high as 33 mph.

    High: 37 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 30. West wind around 9 mph.

    Low: 30 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 41. Southwest wind 8 to 10 mph.

    High: 41 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 34. South wind 7 to 10 mph, with gusts as high as 23 mph.

    Low: 34 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A slight chance of rain after 1pm. Mostly cloudy, with a high near 45. Southwest wind 9 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 20%.

    High: 45 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Wednesday Night

    Wednesday Night: A chance of rain. Cloudy, with a low around 35. South wind around 6 mph. Chance of precipitation is 50%.

    Low: 35 °F

    Chance Rain

  • Thursday

    Thursday: A chance of rain. Mostly cloudy, with a high near 42. Southwest wind 6 to 9 mph. Chance of precipitation is 40%.

    High: 42 °F

    Chance Rain

  • Thursday Night

    Thursday Night: Rain likely before 2am, then snow likely. Mostly cloudy, with a low around 26. West wind 8 to 14 mph becoming north after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 60%.

    Low: 26 °F

    Rain Likely
    then
    Rain/Snow
    Likely

Detailed Forecast

Overnight
Partly cloudy, with a low around 25. Breezy, with a west wind around 20 mph, with gusts as high as 39 mph.
Monday
Mostly sunny, with a high near 37. West wind 11 to 17 mph, with gusts as high as 33 mph.
Monday Night
Partly cloudy, with a low around 30. West wind around 9 mph.
Tuesday
Sunny, with a high near 41. Southwest wind 8 to 10 mph.
Tuesday Night
Mostly cloudy, with a low around 34. South wind 7 to 10 mph, with gusts as high as 23 mph.
Wednesday
A slight chance of rain after 1pm. Mostly cloudy, with a high near 45. Southwest wind 9 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 20%.
Wednesday Night
A chance of rain. Cloudy, with a low around 35. South wind around 6 mph. Chance of precipitation is 50%.
Thursday
A chance of rain. Mostly cloudy, with a high near 42. Southwest wind 6 to 9 mph. Chance of precipitation is 40%.
Thursday Night
Rain likely before 2am, then snow likely. Mostly cloudy, with a low around 26. West wind 8 to 14 mph becoming north after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 60%.
Friday
A chance of snow before 2pm. Partly sunny, with a high near 36. North wind 11 to 15 mph, with gusts as high as 28 mph. Chance of precipitation is 50%.
Friday Night
Partly cloudy, with a low around 26. West wind 7 to 9 mph.
Saturday
Mostly sunny, with a high near 37. West wind 7 to 10 mph.
Saturday Night
A chance of rain and snow. Mostly cloudy, with a low around 29. Southwest wind around 7 mph. Chance of precipitation is 30%.
Sunday
A chance of rain. Mostly cloudy, with a high near 38. South wind 7 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 40%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
South Harwich MA
 41.67°N 70.05°W (Elev. 10 ft)
Last Update:
7:18 pm EST Jan 11, 2026
Forecast Valid:
3am EST Jan 12, 2026-6pm EST Jan 18, 2026
 
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