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.

Rain Fog/Mist

45°F

7°C

Humidity 93%
Wind Speed SW 10 G 20 mph
Barometer 29.76 in (1008.0 mb)
Dewpoint 43°F (6°C)
Visibility 5.00 mi
Wind Chill40°F (4°C)
Last update 21 Mar 2:52 am EDT
Extended Forecast for

Dennis Port MA

  • Overnight

    Overnight: Rain likely, mainly before 4am. Patchy fog. Otherwise, cloudy, with a low around 40. Southwest wind around 10 mph, with gusts as high as 22 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 40 °F

    Rain Likely
    and Patchy
    Fog

  • Saturday

    Saturday: Patchy fog before 9am. Otherwise, cloudy through mid morning, then gradual clearing, with a high near 45. West wind 6 to 14 mph becoming north in the afternoon. Winds could gust as high as 28 mph.

    High: 45 °F

    Patchy Fog
    then Mostly
    Sunny

  • Saturday Night

    Saturday Night: Increasing clouds, with a low around 35. Light and variable wind.

    Low: 35 °F

    Increasing
    Clouds

  • Sunday

    Sunday: A chance of rain, mainly after 1pm. Patchy fog after 4pm. Otherwise, cloudy, with a high near 47. South wind 8 to 11 mph, with gusts as high as 22 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

    High: 47 °F

    Chance Rain
    and Patchy
    Fog

  • Sunday Night

    Sunday Night: Rain. Patchy fog before 9pm. Low around 34. Southwest wind around 7 mph becoming north after midnight. Chance of precipitation is 80%.

    Low: 34 °F

    Rain and
    Patchy Fog

  • Monday

    Monday: Rain before 4pm, then a slight chance of rain and snow between 4pm and 5pm, then a slight chance of rain after 5pm. High near 40. North wind 10 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.

    High: 40 °F

    Rain then
    Chance
    Rain/Snow

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 29. North wind around 10 mph, with gusts as high as 21 mph.

    Low: 29 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 39. North wind 6 to 8 mph.

    High: 39 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 31. Southwest wind 6 to 9 mph.

    Low: 31 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Rain likely, mainly before 4am. Patchy fog. Otherwise, cloudy, with a low around 40. Southwest wind around 10 mph, with gusts as high as 22 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Saturday
Patchy fog before 9am. Otherwise, cloudy through mid morning, then gradual clearing, with a high near 45. West wind 6 to 14 mph becoming north in the afternoon. Winds could gust as high as 28 mph.
Saturday Night
Increasing clouds, with a low around 35. Light and variable wind.
Sunday
A chance of rain, mainly after 1pm. Patchy fog after 4pm. Otherwise, cloudy, with a high near 47. South wind 8 to 11 mph, with gusts as high as 22 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Sunday Night
Rain. Patchy fog before 9pm. Low around 34. Southwest wind around 7 mph becoming north after midnight. Chance of precipitation is 80%.
Monday
Rain before 4pm, then a slight chance of rain and snow between 4pm and 5pm, then a slight chance of rain after 5pm. High near 40. North wind 10 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.
Monday Night
Mostly cloudy, with a low around 29. North wind around 10 mph, with gusts as high as 21 mph.
Tuesday
Mostly sunny, with a high near 39. North wind 6 to 8 mph.
Tuesday Night
Mostly cloudy, with a low around 31. Southwest wind 6 to 9 mph.
Wednesday
Partly sunny, with a high near 45. Southwest wind 9 to 11 mph, with gusts as high as 22 mph.
Wednesday Night
Mostly cloudy, with a low around 33. West wind around 8 mph.
Thursday
A chance of rain. Partly sunny, with a high near 45. South wind around 9 mph. Chance of precipitation is 30%.
Thursday Night
A chance of rain. Mostly cloudy, with a low around 35. Southwest wind 8 to 10 mph, with gusts as high as 22 mph. Chance of precipitation is 40%.
Friday
A chance of rain. Partly sunny, with a high near 45. Northwest wind around 11 mph, with gusts as high as 22 mph. Chance of precipitation is 40%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Dennis Port MA
 41.66°N 70.14°W (Elev. 13 ft)
Last Update:
2:33 am EDT Mar 21, 2026
Forecast Valid:
3am EDT Mar 21, 2026-6pm EDT Mar 27, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation