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

Hazardous Weather Conditions

Current conditions at

Chatham, Chatham Municipal Airport (KCQX)

Lat: 41.69°NLon: 69.99°WElev: 66ft.

Fair

74°F

23°C

Humidity 82%
Wind Speed SW 9 G 24 mph
Barometer 29.98 in (1015.1 mb)
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Last update 1 Jul 9:52 am EDT
Extended Forecast for

East Dennis MA

Heat Advisory until July 4, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory until July 4, 08:00pm

    NOW until 8:00pm Sat

    Heat Advisory

  • Today

    High: 83 °F

    Chance
    Showers and
    Breezy

  • Tonight

    Tonight: A chance of showers and thunderstorms. Mostly cloudy, with a low around 71. Breezy, with a southwest wind 17 to 20 mph. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 71 °F

    Chance
    Showers and
    Breezy

  • Thursday

    Thursday: A slight chance of showers and thunderstorms before 11am. Mostly sunny, with a high near 87. Southwest wind around 16 mph, with gusts as high as 29 mph. Chance of precipitation is 20%.

    High: 87 °F

    Slight Chance
    T-storms then
    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 73. Southwest wind 10 to 16 mph.

    Low: 73 °F

    Partly Cloudy

  • Friday

    Friday: Sunny and hot, with a high near 97. West wind 7 to 10 mph.

    High: 97 °F

    Hot

  • Friday Night

    Friday Night: Mostly clear, with a low around 73. Northwest wind 6 to 9 mph.

    Low: 73 °F

    Mostly Clear

  • Independence Day

    Independence Day: Sunny and hot, with a high near 91. West wind around 6 mph becoming south in the afternoon.

    High: 91 °F

    Hot

  • Saturday Night

    Saturday Night: A chance of showers between 10pm and 1am. Partly cloudy, with a low around 69. Southwest wind around 5 mph becoming light and variable in the evening. Chance of precipitation is 30%.

    Low: 69 °F

    Chance
    Showers

Detailed Forecast

Today
A chance of showers and thunderstorms, mainly after 3pm. Mostly sunny, with a high near 83. Breezy, with a southwest wind 17 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 30%.
Tonight
A chance of showers and thunderstorms. Mostly cloudy, with a low around 71. Breezy, with a southwest wind 17 to 20 mph. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday
A slight chance of showers and thunderstorms before 11am. Mostly sunny, with a high near 87. Southwest wind around 16 mph, with gusts as high as 29 mph. Chance of precipitation is 20%.
Thursday Night
Partly cloudy, with a low around 73. Southwest wind 10 to 16 mph.
Friday
Sunny and hot, with a high near 97. West wind 7 to 10 mph.
Friday Night
Mostly clear, with a low around 73. Northwest wind 6 to 9 mph.
Independence Day
Sunny and hot, with a high near 91. West wind around 6 mph becoming south in the afternoon.
Saturday Night
A chance of showers between 10pm and 1am. Partly cloudy, with a low around 69. Southwest wind around 5 mph becoming light and variable in the evening. Chance of precipitation is 30%.
Sunday
A chance of showers after 3pm. Mostly sunny, with a high near 83. Northwest wind around 6 mph becoming northeast in the afternoon. Chance of precipitation is 30%.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 70. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 50%.
Monday
A chance of showers. Mostly cloudy, with a high near 81. East wind 5 to 7 mph. Chance of precipitation is 50%.
Monday Night
A chance of showers. Mostly cloudy, with a low around 64. East wind around 6 mph. Chance of precipitation is 40%.
Tuesday
Mostly sunny, with a high near 79. Northeast wind 6 to 8 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
East Dennis MA
 41.75°N 70.12°W (Elev. 49 ft)
Last Update:
4:30 am EDT Jul 1, 2026
Forecast Valid:
10am EDT Jul 1, 2026-6pm EDT Jul 7, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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