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

60°F

16°C

Humidity 90%
Wind Speed SW 7 mph
Barometer 30.14 in (1020.7 mb)
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 18 May 7:52 pm EDT
Extended Forecast for

Dennis Port MA

  • Tonight

    Tonight: Patchy fog before 2am, then patchy fog after 3am. Otherwise, partly cloudy, with a low around 59. Southwest wind 8 to 11 mph.

    Low: 59 °F

    Patchy Fog

  • Tuesday

    Tuesday: Mostly sunny, with a high near 74. Southwest wind 9 to 14 mph, with gusts as high as 25 mph.

    High: 74 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 62. Southwest wind around 11 mph, with gusts as high as 23 mph.

    Low: 62 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A chance of showers, then showers likely and possibly a thunderstorm after 5pm. Increasing clouds, with a high near 76. Southwest wind 10 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 76 °F

    Mostly Sunny
    then Showers
    Likely

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 2am. Mostly cloudy, with a low around 53. West wind around 8 mph becoming northwest after midnight. Chance of precipitation is 50%.

    Low: 53 °F

    Chance
    Showers

  • Thursday

    Thursday: Partly sunny, with a high near 65. North wind 6 to 9 mph.

    High: 65 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 51. Light and variable wind.

    Low: 51 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 65. Northeast wind around 6 mph becoming southeast in the afternoon.

    High: 65 °F

    Mostly Sunny

  • Friday Night

    Friday Night: A chance of showers after 3am. Mostly cloudy, with a low around 51. South wind 3 to 5 mph. Chance of precipitation is 30%.

    Low: 51 °F

    Mostly Cloudy
    then Chance
    Showers

Detailed Forecast

Tonight
Patchy fog before 2am, then patchy fog after 3am. Otherwise, partly cloudy, with a low around 59. Southwest wind 8 to 11 mph.
Tuesday
Mostly sunny, with a high near 74. Southwest wind 9 to 14 mph, with gusts as high as 25 mph.
Tuesday Night
Mostly cloudy, with a low around 62. Southwest wind around 11 mph, with gusts as high as 23 mph.
Wednesday
A chance of showers, then showers likely and possibly a thunderstorm after 5pm. Increasing clouds, with a high near 76. Southwest wind 10 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 2am. Mostly cloudy, with a low around 53. West wind around 8 mph becoming northwest after midnight. Chance of precipitation is 50%.
Thursday
Partly sunny, with a high near 65. North wind 6 to 9 mph.
Thursday Night
Partly cloudy, with a low around 51. Light and variable wind.
Friday
Mostly sunny, with a high near 65. Northeast wind around 6 mph becoming southeast in the afternoon.
Friday Night
A chance of showers after 3am. Mostly cloudy, with a low around 51. South wind 3 to 5 mph. Chance of precipitation is 30%.
Saturday
Showers likely, mainly after noon. Mostly cloudy, with a high near 64. Calm wind becoming east 5 to 7 mph in the morning. Chance of precipitation is 60%.
Saturday Night
Showers likely. Cloudy, with a low around 51. East wind around 7 mph. Chance of precipitation is 60%.
Sunday
A chance of showers. Mostly cloudy, with a high near 64. East wind 7 to 10 mph. Chance of precipitation is 50%.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 52. East wind around 6 mph. Chance of precipitation is 40%.
Memorial Day
A chance of showers. Partly sunny, with a high near 66. East wind 6 to 8 mph. Chance of precipitation is 30%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Dennis Port MA
 41.68°N 70.13°W (Elev. 10 ft)
Last Update:
7:55 pm EDT May 18, 2026
Forecast Valid:
8pm EDT May 18, 2026-6pm EDT May 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