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

Nantucket, Nantucket Memorial Airport (KACK)

Lat: 41.25°NLon: 70.06°WElev: 46ft.

Overcast

37°F

3°C

Humidity 62%
Wind Speed S 14 mph
Barometer 30.62 in (1036.9 mb)
Dewpoint 25°F (-4°C)
Visibility 10.00 mi
Wind Chill28°F (-2°C)
Last update 3 Mar 10:53 am EST
Extended Forecast for

2 Miles ENE Siasconset MA

  • Today

    Today: A chance of rain and snow before 1pm, then rain. High near 39. South wind 13 to 15 mph. Chance of precipitation is 100%. Little or no snow accumulation expected.

    High: 39 °F

    Rain/Snow

  • Tonight

    Tonight: Rain, mainly before 5am. Patchy fog after 10pm. Low around 36. Southeast wind 11 to 17 mph becoming west after midnight. Winds could gust as high as 28 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.

    Low: 36 °F

    Rain and
    Patchy Fog

  • Wednesday

    Wednesday: A chance of rain before 7am. Patchy fog before 9am. Otherwise, mostly sunny, with a high near 48. Northwest wind 7 to 11 mph becoming east in the afternoon. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 48 °F

    Chance Rain
    and Patchy
    Fog then
    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 33. Light south wind.

    Low: 33 °F

    Mostly Cloudy

  • Thursday

    Thursday: A chance of rain, mainly after 9am. Mostly cloudy, with a high near 40. Light and variable wind becoming southeast 5 to 7 mph in the morning. Chance of precipitation is 30%.

    High: 40 °F

    Chance Rain

  • Thursday Night

    Thursday Night: Rain likely, mainly after 1am. Cloudy, with a low around 35. East wind 7 to 11 mph. Chance of precipitation is 70%.

    Low: 35 °F

    Chance Rain
    then Rain
    Likely

  • Friday

    Friday: Rain likely, mainly before noon. Cloudy, with a high near 41. East wind 11 to 14 mph. Chance of precipitation is 70%.

    High: 41 °F

    Rain Likely

  • Friday Night

    Friday Night: Cloudy, with a low around 35. Northeast wind 6 to 10 mph.

    Low: 35 °F

    Cloudy

  • Saturday

    Saturday: Mostly cloudy, with a high near 45. Southeast wind 6 to 11 mph becoming southwest in the afternoon.

    High: 45 °F

    Mostly Cloudy

Detailed Forecast

Today
A chance of rain and snow before 1pm, then rain. High near 39. South wind 13 to 15 mph. Chance of precipitation is 100%. Little or no snow accumulation expected.
Tonight
Rain, mainly before 5am. Patchy fog after 10pm. Low around 36. Southeast wind 11 to 17 mph becoming west after midnight. Winds could gust as high as 28 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
Wednesday
A chance of rain before 7am. Patchy fog before 9am. Otherwise, mostly sunny, with a high near 48. Northwest wind 7 to 11 mph becoming east in the afternoon. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday Night
Mostly cloudy, with a low around 33. Light south wind.
Thursday
A chance of rain, mainly after 9am. Mostly cloudy, with a high near 40. Light and variable wind becoming southeast 5 to 7 mph in the morning. Chance of precipitation is 30%.
Thursday Night
Rain likely, mainly after 1am. Cloudy, with a low around 35. East wind 7 to 11 mph. Chance of precipitation is 70%.
Friday
Rain likely, mainly before noon. Cloudy, with a high near 41. East wind 11 to 14 mph. Chance of precipitation is 70%.
Friday Night
Cloudy, with a low around 35. Northeast wind 6 to 10 mph.
Saturday
Mostly cloudy, with a high near 45. Southeast wind 6 to 11 mph becoming southwest in the afternoon.
Saturday Night
A chance of rain after 9pm. Cloudy, with a low around 39. Southwest wind 11 to 14 mph. Chance of precipitation is 50%.
Sunday
A chance of rain. Mostly cloudy, with a high near 44. Southwest wind 8 to 11 mph. Chance of precipitation is 30%.
Sunday Night
Mostly cloudy, with a low around 38. Southwest wind around 8 mph.
Monday
Partly sunny, with a high near 45. Southwest wind 8 to 13 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles ENE Siasconset MA
 41.28°N 69.97°W (Elev. 56 ft)
Last Update:
8:22 am EST Mar 3, 2026
Forecast Valid:
11am EST Mar 3, 2026-6pm EDT Mar 9, 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