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

63°F

17°C

Humidity 84%
Wind Speed SW 12 G 20 mph
Barometer 30.07 in (1018.5 mb)
Dewpoint 58°F (14°C)
Visibility 10.00 mi
Last update 19 May 8:52 am EDT
Extended Forecast for

Harwich Port MA

  • Today

    Today: Mostly sunny, with a high near 70. Southwest wind 10 to 15 mph, with gusts as high as 26 mph.

    High: 70 °F

    Mostly Sunny

  • Tonight

    Tonight: Patchy fog between 1am and 2am. Otherwise, mostly cloudy, with a low around 61. Southwest wind 11 to 13 mph, with gusts as high as 24 mph.

    Low: 61 °F

    Mostly Cloudy
    then Patchy
    Fog

  • Wednesday

    Wednesday: A chance of showers, with thunderstorms also possible after 5pm. Patchy fog before 7am. Otherwise, mostly sunny, with a high near 74. Southwest wind 11 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 74 °F

    Patchy Fog
    then Chance
    Showers

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 54. West wind around 8 mph becoming north after midnight. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 54 °F

    Chance
    Showers

  • Thursday

    Thursday: Partly sunny, with a high near 64. North wind 8 to 10 mph.

    High: 64 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 52. Calm wind.

    Low: 52 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 63. Northeast wind 3 to 6 mph.

    High: 63 °F

    Mostly Sunny

  • Friday Night

    Friday Night: A chance of showers after 4am. 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

  • Saturday

    Saturday: Showers likely, mainly after 10am. Mostly cloudy, with a high near 61. East wind 5 to 10 mph. Chance of precipitation is 70%.

    High: 61 °F

    Showers
    Likely

Detailed Forecast

Today
Mostly sunny, with a high near 70. Southwest wind 10 to 15 mph, with gusts as high as 26 mph.
Tonight
Patchy fog between 1am and 2am. Otherwise, mostly cloudy, with a low around 61. Southwest wind 11 to 13 mph, with gusts as high as 24 mph.
Wednesday
A chance of showers, with thunderstorms also possible after 5pm. Patchy fog before 7am. Otherwise, mostly sunny, with a high near 74. Southwest wind 11 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 40%. 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. Mostly cloudy, with a low around 54. West wind around 8 mph becoming north after midnight. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday
Partly sunny, with a high near 64. North wind 8 to 10 mph.
Thursday Night
Partly cloudy, with a low around 52. Calm wind.
Friday
Mostly sunny, with a high near 63. Northeast wind 3 to 6 mph.
Friday Night
A chance of showers after 4am. Mostly cloudy, with a low around 51. South wind 3 to 5 mph. Chance of precipitation is 30%.
Saturday
Showers likely, mainly after 10am. Mostly cloudy, with a high near 61. East wind 5 to 10 mph. Chance of precipitation is 70%.
Saturday Night
Showers likely. Cloudy, with a low around 51. East wind around 7 mph. Chance of precipitation is 70%.
Sunday
Showers likely. Mostly cloudy, with a high near 62. East wind 8 to 11 mph. Chance of precipitation is 60%.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 51. Northeast wind around 8 mph. Chance of precipitation is 40%.
Memorial Day
A chance of showers. Mostly cloudy, with a high near 63. Northeast wind 7 to 9 mph. Chance of precipitation is 30%.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Harwich Port MA
 41.67°N 70.08°W (Elev. 10 ft)
Last Update:
2:28 am EDT May 19, 2026
Forecast Valid:
9am EDT May 19, 2026-6pm EDT May 25, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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