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

68°F

20°C

Humidity 49%
Wind Speed W 9 G 23 mph
Barometer 29.59 in (1002.2 mb)
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Last update 20 Jun 12:52 am EDT
Extended Forecast for

South Harwich MA

  • Overnight

    Overnight: Clear, with a low around 60. West wind 8 to 10 mph, with gusts as high as 24 mph.

    Low: 60 °F

    Clear

  • Saturday

    Saturday: Scattered showers, mainly after 4pm. Increasing clouds, with a high near 84. West wind 11 to 14 mph, with gusts as high as 26 mph. Chance of precipitation is 30%.

    High: 84 °F

    Sunny then
    Scattered
    Showers

  • Saturday Night

    Saturday Night: Scattered showers, mainly before 7pm. Mostly cloudy, then gradually becoming clear, with a low around 60. West wind around 6 mph. Chance of precipitation is 30%.

    Low: 60 °F

    Scattered
    Showers then
    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 83. Southwest wind 3 to 8 mph.

    High: 83 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 67. Southwest wind 3 to 5 mph.

    Low: 67 °F

    Partly Cloudy

  • Monday

    Monday: Showers likely, mainly after 3pm. Partly sunny, with a high near 84. Calm wind becoming south 5 to 9 mph in the morning. Chance of precipitation is 60%.

    High: 84 °F

    Slight Chance
    Showers then
    Showers
    Likely

  • Monday Night

    Monday Night: Showers and possibly a thunderstorm. Low around 68. South wind around 14 mph, with gusts as high as 26 mph. Chance of precipitation is 90%.

    Low: 68 °F

    Showers

  • Tuesday

    Tuesday: Showers likely, mainly before 9am. Partly sunny, with a high near 79. West wind 9 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 60%.

    High: 79 °F

    Showers
    Likely then
    Chance
    Showers

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 68. Light and variable wind becoming southwest around 5 mph in the evening.

    Low: 68 °F

    Partly Cloudy

Detailed Forecast

Overnight
Clear, with a low around 60. West wind 8 to 10 mph, with gusts as high as 24 mph.
Saturday
Scattered showers, mainly after 4pm. Increasing clouds, with a high near 84. West wind 11 to 14 mph, with gusts as high as 26 mph. Chance of precipitation is 30%.
Saturday Night
Scattered showers, mainly before 7pm. Mostly cloudy, then gradually becoming clear, with a low around 60. West wind around 6 mph. Chance of precipitation is 30%.
Sunday
Sunny, with a high near 83. Southwest wind 3 to 8 mph.
Sunday Night
Partly cloudy, with a low around 67. Southwest wind 3 to 5 mph.
Monday
Showers likely, mainly after 3pm. Partly sunny, with a high near 84. Calm wind becoming south 5 to 9 mph in the morning. Chance of precipitation is 60%.
Monday Night
Showers and possibly a thunderstorm. Low around 68. South wind around 14 mph, with gusts as high as 26 mph. Chance of precipitation is 90%.
Tuesday
Showers likely, mainly before 9am. Partly sunny, with a high near 79. West wind 9 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 60%.
Tuesday Night
Partly cloudy, with a low around 68. Light and variable wind becoming southwest around 5 mph in the evening.
Wednesday
Sunny, with a high near 79. Light and variable wind becoming east around 6 mph in the morning.
Wednesday Night
Partly cloudy, with a low around 68. South wind 3 to 5 mph.
Thursday
Mostly sunny, with a high near 79. Southeast wind 3 to 8 mph.
Thursday Night
Partly cloudy, with a low around 67. South wind 3 to 5 mph.
Friday
Partly sunny, with a high near 78. South wind 5 to 9 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
South Harwich MA
 41.69°N 70.04°W (Elev. 52 ft)
Last Update:
10:58 pm EDT Jun 19, 2026
Forecast Valid:
1am EDT Jun 20, 2026-6pm EDT Jun 26, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation