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

Flooding Risks from Tropical Moisture Across the Southeast and Southwest

Tropical moisture from Isaias and Rachel will impact portions of the Southeast and Southwest this weekend. Flash flooding, strong winds and even a threat for severe thunderstorms and tornadoes are possible. Meanwhile, strong winds and dry fuels are raising fire weather concerns across the central Great Basin and western High Plains. Across the northern Rockies, first winter storm of the season. Read More >

Current conditions at

Chatham, Chatham Municipal Airport (KCQX)

Lat: 41.69°NLon: 69.99°WElev: 66ft.

Fair

44°F

7°C

Humidity 96%
Wind Speed Calm
Barometer 30.47 in (1031.8 mb)
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Last update 11 Oct 6:52 am EDT
Extended Forecast for

East Harwich MA

  • Today

    Today: Increasing clouds, with a high near 62. South wind 5 to 9 mph.

    High: 62 °F

    Increasing
    Clouds

  • Tonight

    Tonight: Showers, mainly before 5am. The rain could be heavy at times. Patchy fog. Low around 52. East wind 6 to 10 mph, with gusts as high as 23 mph. Chance of precipitation is 100%. New precipitation amounts between 1 and 2 inches possible.

    Low: 52 °F

    Heavy Rain
    and Patchy
    Fog

  • Columbus Day

    Columbus Day: A chance of showers, mainly before 7am. Patchy fog before 11am. Otherwise, mostly cloudy, with a high near 63. North wind around 11 mph, with gusts as high as 21 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 63 °F

    Chance
    Showers and
    Patchy Fog
    then Mostly
    Cloudy

  • Monday Night

    Monday Night: Increasing clouds, with a low around 50. Calm wind becoming northeast 5 to 7 mph after midnight.

    Low: 50 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 65. Southeast wind 8 to 10 mph.

    High: 65 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: A chance of showers, with thunderstorms also possible after 2am. Mostly cloudy, with a low around 54. Southwest wind around 10 mph, with gusts as high as 24 mph. Chance of precipitation is 40%.

    Low: 54 °F

    Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers before 10am. Partly sunny, with a high near 68. Southwest wind around 11 mph becoming northwest in the afternoon. Winds could gust as high as 22 mph. Chance of precipitation is 30%.

    High: 68 °F

    Chance
    Showers then
    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 46. Northwest wind around 10 mph, with gusts as high as 20 mph.

    Low: 46 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 59. Northwest wind around 14 mph, with gusts as high as 24 mph.

    High: 59 °F

    Sunny

Detailed Forecast

Today
Increasing clouds, with a high near 62. South wind 5 to 9 mph.
Tonight
Showers, mainly before 5am. The rain could be heavy at times. Patchy fog. Low around 52. East wind 6 to 10 mph, with gusts as high as 23 mph. Chance of precipitation is 100%. New precipitation amounts between 1 and 2 inches possible.
Columbus Day
A chance of showers, mainly before 7am. Patchy fog before 11am. Otherwise, mostly cloudy, with a high near 63. North wind around 11 mph, with gusts as high as 21 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Monday Night
Increasing clouds, with a low around 50. Calm wind becoming northeast 5 to 7 mph after midnight.
Tuesday
Mostly cloudy, with a high near 65. Southeast wind 8 to 10 mph.
Tuesday Night
A chance of showers, with thunderstorms also possible after 2am. Mostly cloudy, with a low around 54. Southwest wind around 10 mph, with gusts as high as 24 mph. Chance of precipitation is 40%.
Wednesday
A chance of showers before 10am. Partly sunny, with a high near 68. Southwest wind around 11 mph becoming northwest in the afternoon. Winds could gust as high as 22 mph. Chance of precipitation is 30%.
Wednesday Night
Partly cloudy, with a low around 46. Northwest wind around 10 mph, with gusts as high as 20 mph.
Thursday
Sunny, with a high near 59. Northwest wind around 14 mph, with gusts as high as 24 mph.
Thursday Night
Partly cloudy, with a low around 45. North wind 6 to 8 mph.
Friday
A chance of showers. Mostly cloudy, with a high near 64. South wind 7 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 30%.
Friday Night
Showers likely. Mostly cloudy, with a low around 48. South wind 11 to 15 mph, with gusts as high as 31 mph. Chance of precipitation is 60%.
Saturday
Showers likely. Mostly cloudy, with a high near 60. Northwest wind 16 to 18 mph, with gusts as high as 33 mph. Chance of precipitation is 60%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
East Harwich MA
 41.71°N 70.04°W (Elev. 52 ft)
Last Update:
2:17 am EDT Oct 11, 2026
Forecast Valid:
7am EDT Oct 11, 2026-6pm EDT Oct 17, 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