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

63°F

17°C

Humidity 60%
Wind Speed N 8 mph
Barometer 30.12 in (1019.9 mb)
Dewpoint 49°F (9°C)
Visibility 10.00 mi
Last update 19 Sep 1:52 am EDT
Extended Forecast for

Harwich Port MA

  • Overnight

    Overnight: Mostly cloudy, with a low around 55. North wind around 14 mph, with gusts as high as 25 mph.

    Low: 55 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 63. Northeast wind 9 to 13 mph, with gusts as high as 23 mph.

    High: 63 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 46. Northeast wind 3 to 5 mph.

    Low: 46 °F

    Partly Cloudy

  • Sunday

    Sunday: Showers likely, mainly after 4pm. Mostly cloudy, with a high near 66. Southeast wind 8 to 11 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 66 °F

    Mostly Cloudy
    then Showers
    Likely

  • Sunday Night

    Sunday Night: Showers. Patchy fog before 9pm. Low around 59. Southeast wind 7 to 9 mph. Chance of precipitation is 90%.

    Low: 59 °F

    Showers and
    Patchy Fog

  • Monday

    Monday: Showers likely, mainly before 11am. Partly sunny, with a high near 65. Northeast wind 14 to 17 mph. Chance of precipitation is 60%.

    High: 65 °F

    Showers
    Likely then
    Chance
    Showers

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 55. Northeast wind 13 to 16 mph.

    Low: 55 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 64. Northeast wind around 18 mph, with gusts as high as 28 mph.

    High: 64 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 56. Breezy, with a northeast wind 18 to 21 mph.

    Low: 56 °F

    Mostly Cloudy
    and Breezy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 55. North wind around 14 mph, with gusts as high as 25 mph.
Saturday
Mostly sunny, with a high near 63. Northeast wind 9 to 13 mph, with gusts as high as 23 mph.
Saturday Night
Partly cloudy, with a low around 46. Northeast wind 3 to 5 mph.
Sunday
Showers likely, mainly after 4pm. Mostly cloudy, with a high near 66. Southeast wind 8 to 11 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Sunday Night
Showers. Patchy fog before 9pm. Low around 59. Southeast wind 7 to 9 mph. Chance of precipitation is 90%.
Monday
Showers likely, mainly before 11am. Partly sunny, with a high near 65. Northeast wind 14 to 17 mph. Chance of precipitation is 60%.
Monday Night
Mostly cloudy, with a low around 55. Northeast wind 13 to 16 mph.
Tuesday
Mostly cloudy, with a high near 64. Northeast wind around 18 mph, with gusts as high as 28 mph.
Tuesday Night
Mostly cloudy, with a low around 56. Breezy, with a northeast wind 18 to 21 mph.
Wednesday
Partly sunny, with a high near 64. Breezy, with a northeast wind around 23 mph, with gusts as high as 33 mph.
Wednesday Night
Mostly cloudy, with a low around 56. Breezy, with a northeast wind 22 to 25 mph.
Thursday
A chance of showers. Partly sunny, with a high near 65. Breezy, with a northeast wind 22 to 25 mph, with gusts as high as 36 mph. Chance of precipitation is 30%.
Thursday Night
A chance of showers. Mostly cloudy, with a low around 55. Breezy, with a northeast wind 21 to 23 mph. Chance of precipitation is 40%.
Friday
A chance of showers. Mostly cloudy, with a high near 65. Breezy, with a north wind 20 to 22 mph. Chance of precipitation is 30%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Harwich Port MA
 41.67°N 70.08°W (Elev. 10 ft)
Last Update:
12:56 am EDT Sep 19, 2026
Forecast Valid:
2am EDT Sep 19, 2026-6pm EDT Sep 25, 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