National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Autumn Temperatures for Eastern Third of the Country; Developing Offshore Coastal Storm

Cooler and less humid conditions for most of the eastern third of the nation as high pressure dominates the weather pattern. Otherwise, rather tranquil weather for most of the nation for the end of the weekend into the start of this week. We continue to monitor a developing coastal storm offshore of the Carolinas; Coastal flooding and beach erosion possible along portions of the Mid-Atlantic. Read More >

Current conditions at

Chatham, Chatham Municipal Airport (KCQX)

Lat: 41.69°NLon: 69.99°WElev: 66ft.

Fair

51°F

11°C

Humidity 50%
Wind Speed NE 8 mph
Barometer 30.56 in (1035.0 mb)
Dewpoint 33°F (1°C)
Visibility 10.00 mi
Wind Chill48°F (9°C)
Last update 18 Oct 3:52 pm EDT
Extended Forecast for

Dennis Port MA

  • Tonight

    Tonight: Clear, with a low around 47. East wind around 8 mph.

    Low: 47 °F

    Clear

  • Monday

    Monday: Increasing clouds, with a high near 57. Northeast wind 11 to 16 mph.

    High: 57 °F

    Increasing
    Clouds

  • Monday Night

    Monday Night: A slight chance of showers between midnight and 1am. Mostly cloudy, with a low around 51. Breezy, with a north wind 16 to 21 mph. Chance of precipitation is 20%.

    Low: 51 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers and
    Breezy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 58. Breezy, with a north wind around 23 mph, with gusts as high as 33 mph.

    High: 58 °F

    Mostly Cloudy
    and Breezy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 50. Windy, with a northeast wind around 26 mph, with gusts as high as 36 mph.

    Low: 50 °F

    Mostly Cloudy
    and Windy

  • Wednesday

    Wednesday: A slight chance of showers after 3pm. Mostly cloudy, with a high near 56. Breezy, with a northeast wind 23 to 25 mph. Chance of precipitation is 20%.

    High: 56 °F

    Breezy.
    Partly Sunny
    then Slight
    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A chance of showers after 8pm. Mostly cloudy, with a low around 48. Breezy, with a northeast wind 18 to 21 mph. Chance of precipitation is 40%.

    Low: 48 °F

    Chance
    Showers and
    Breezy

  • Thursday

    Thursday: A chance of showers before 1pm. Partly sunny, with a high near 57. Breezy, with a north wind 17 to 21 mph. Chance of precipitation is 30%.

    High: 57 °F

    Chance
    Showers and
    Breezy

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 46. Breezy, with a north wind 13 to 22 mph, with gusts as high as 33 mph.

    Low: 46 °F

    Partly Cloudy
    then Partly
    Cloudy and
    Breezy

Detailed Forecast

Tonight
Clear, with a low around 47. East wind around 8 mph.
Monday
Increasing clouds, with a high near 57. Northeast wind 11 to 16 mph.
Monday Night
A slight chance of showers between midnight and 1am. Mostly cloudy, with a low around 51. Breezy, with a north wind 16 to 21 mph. Chance of precipitation is 20%.
Tuesday
Mostly cloudy, with a high near 58. Breezy, with a north wind around 23 mph, with gusts as high as 33 mph.
Tuesday Night
Mostly cloudy, with a low around 50. Windy, with a northeast wind around 26 mph, with gusts as high as 36 mph.
Wednesday
A slight chance of showers after 3pm. Mostly cloudy, with a high near 56. Breezy, with a northeast wind 23 to 25 mph. Chance of precipitation is 20%.
Wednesday Night
A chance of showers after 8pm. Mostly cloudy, with a low around 48. Breezy, with a northeast wind 18 to 21 mph. Chance of precipitation is 40%.
Thursday
A chance of showers before 1pm. Partly sunny, with a high near 57. Breezy, with a north wind 17 to 21 mph. Chance of precipitation is 30%.
Thursday Night
Partly cloudy, with a low around 46. Breezy, with a north wind 13 to 22 mph, with gusts as high as 33 mph.
Friday
Mostly sunny, with a high near 54. Breezy, with a north wind around 22 mph, with gusts as high as 33 mph.
Friday Night
Partly cloudy, with a low around 45. North wind around 18 mph, with gusts as high as 28 mph.
Saturday
Mostly sunny, with a high near 53. North wind 15 to 17 mph.
Saturday Night
Mostly clear, with a low around 46. North wind 6 to 8 mph.
Sunday
Sunny, with a high near 57. Northwest wind 7 to 10 mph becoming southwest in the afternoon.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Dennis Port MA
 41.66°N 70.11°W (Elev. 0 ft)
Last Update:
2:43 pm EDT Oct 18, 2026
Forecast Valid:
4pm EDT Oct 18, 2026-6pm EDT Oct 25, 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