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

31°F

-1°C

Humidity 92%
Wind Speed Calm
Barometer 30.10 in (1019.5 mb)
Dewpoint 29°F (-2°C)
Visibility 10.00 mi
Last update 18 Jan 1:52 am EST
Extended Forecast for

East Harwich MA

Winter Weather Advisory January 18, 07:00am until January 19, 07:00am
Click here for hazard details and duration
Winter Weather Advisory

  • Overnight

    Overnight: Mostly cloudy, with a low around 31. Calm wind.

    Low: 31 °F

    Mostly Cloudy

  • Sunday

    Sunday: Snow before 1pm, then rain between 1pm and 4pm, then snow after 4pm. Patchy fog after 10am. High near 38. Calm wind becoming east around 6 mph in the afternoon. Chance of precipitation is 100%. Little or no snow accumulation expected.

    High: 38 °F

    Snow and
    Patchy Fog
    then
    Rain/Snow and
    Patchy Fog

  • Sunday Night

    Sunday Night: Rain before 8pm, then snow. Patchy fog. Low around 28. Northeast wind around 6 mph becoming northwest after midnight. Chance of precipitation is 100%. New snow accumulation of around an inch possible.

    Low: 28 °F

    Rain/Snow and
    Patchy Fog
    then Snow and
    Patchy Fog

  • M.L.King Day

    M.L.King Day: Snow showers likely, mainly before 10am. Patchy fog before 8am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 36. Southwest wind 6 to 14 mph, with gusts as high as 26 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.

    High: 36 °F

    Snow Showers
    Likely and
    Patchy Fog
    then Mostly
    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 20. West wind 8 to 11 mph, with gusts as high as 28 mph.

    Low: 20 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 26. West wind 6 to 16 mph.

    High: 26 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 16. West wind 9 to 16 mph.

    Low: 16 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 37. Southwest wind 7 to 9 mph.

    High: 37 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: A chance of snow showers after 4am. Mostly cloudy, with a low around 29. Southwest wind around 9 mph, with gusts as high as 22 mph. Chance of precipitation is 30%.

    Low: 29 °F

    Mostly Cloudy
    then Chance
    Snow Showers

Detailed Forecast

Overnight
Mostly cloudy, with a low around 31. Calm wind.
Sunday
Snow before 1pm, then rain between 1pm and 4pm, then snow after 4pm. Patchy fog after 10am. High near 38. Calm wind becoming east around 6 mph in the afternoon. Chance of precipitation is 100%. Little or no snow accumulation expected.
Sunday Night
Rain before 8pm, then snow. Patchy fog. Low around 28. Northeast wind around 6 mph becoming northwest after midnight. Chance of precipitation is 100%. New snow accumulation of around an inch possible.
M.L.King Day
Snow showers likely, mainly before 10am. Patchy fog before 8am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 36. Southwest wind 6 to 14 mph, with gusts as high as 26 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.
Monday Night
Partly cloudy, with a low around 20. West wind 8 to 11 mph, with gusts as high as 28 mph.
Tuesday
Mostly sunny, with a high near 26. West wind 6 to 16 mph.
Tuesday Night
Mostly clear, with a low around 16. West wind 9 to 16 mph.
Wednesday
Mostly sunny, with a high near 37. Southwest wind 7 to 9 mph.
Wednesday Night
A chance of snow showers after 4am. Mostly cloudy, with a low around 29. Southwest wind around 9 mph, with gusts as high as 22 mph. Chance of precipitation is 30%.
Thursday
A chance of snow showers before 9am, then a chance of rain showers between 9am and 11am. Partly sunny, with a high near 40. Southwest wind 9 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 30%.
Thursday Night
Partly cloudy, with a low around 21. West wind around 10 mph, with gusts as high as 22 mph.
Friday
Mostly sunny, with a high near 33. West wind around 9 mph, with gusts as high as 20 mph.
Friday Night
Mostly cloudy, with a low around 25. Southwest wind around 6 mph.
Saturday
A chance of snow showers. Mostly cloudy, with a high near 36. Southwest wind 7 to 10 mph. Chance of precipitation is 40%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
East Harwich MA
 41.69°N 70.04°W (Elev. 52 ft)
Last Update:
2:21 am EST Jan 18, 2026
Forecast Valid:
2am EST Jan 18, 2026-6pm EST Jan 24, 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