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.

Fair

16°F

-9°C

Humidity 74%
Wind Speed Calm
Barometer 30.66 in (1038.3 mb)
Dewpoint 9°F (-13°C)
Visibility 10.00 mi
Last update 3 Mar 1:53 am EST
Extended Forecast for

3 Miles NNE Siasconset MA

  • Overnight

    Overnight: Clear, with a low around 26. South wind around 7 mph.

    Low: 26 °F

    Clear

  • Tuesday

    Tuesday: A slight chance of rain and snow before noon, then rain. High near 39. South wind 9 to 16 mph. Chance of precipitation is 100%. Little or no snow accumulation expected.

    High: 39 °F

    Slight Chance
    Rain/Snow
    then Rain

  • Tuesday Night

    Tuesday Night: Rain, mainly before 5am. Patchy fog after 10pm. Low around 37. Breezy, with a southeast wind 17 to 20 mph becoming west after midnight. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.

    Low: 37 °F

    Rain and
    Patchy Fog

  • Wednesday

    Wednesday: Patchy fog before 9am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 40. West wind 6 to 13 mph becoming south in the afternoon.

    High: 40 °F

    Patchy Fog
    then Mostly
    Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 35. Light south wind.

    Low: 35 °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 38. East wind 8 to 16 mph. Chance of precipitation is 70%.

    Low: 38 °F

    Chance Rain
    then Rain
    Likely

  • Friday

    Friday: Rain likely, mainly before noon. Cloudy, with a high near 41. East wind 15 to 18 mph. Chance of precipitation is 70%.

    High: 41 °F

    Rain Likely

  • Friday Night

    Friday Night: Cloudy, with a low around 37. Northeast wind 7 to 13 mph.

    Low: 37 °F

    Cloudy

Detailed Forecast

Overnight
Clear, with a low around 26. South wind around 7 mph.
Tuesday
A slight chance of rain and snow before noon, then rain. High near 39. South wind 9 to 16 mph. Chance of precipitation is 100%. Little or no snow accumulation expected.
Tuesday Night
Rain, mainly before 5am. Patchy fog after 10pm. Low around 37. Breezy, with a southeast wind 17 to 20 mph becoming west after midnight. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
Wednesday
Patchy fog before 9am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 40. West wind 6 to 13 mph becoming south in the afternoon.
Wednesday Night
Mostly cloudy, with a low around 35. 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 38. East wind 8 to 16 mph. Chance of precipitation is 70%.
Friday
Rain likely, mainly before noon. Cloudy, with a high near 41. East wind 15 to 18 mph. Chance of precipitation is 70%.
Friday Night
Cloudy, with a low around 37. Northeast wind 7 to 13 mph.
Saturday
Mostly cloudy, with a high near 45. Southeast wind 6 to 15 mph becoming southwest in the afternoon.
Saturday Night
A chance of rain. Cloudy, with a low around 41. Breezy, with a southwest wind 16 to 20 mph. Chance of precipitation is 50%.
Sunday
A chance of rain. Mostly cloudy, with a high near 44. Southwest wind 9 to 15 mph. Chance of precipitation is 30%.
Sunday Night
Mostly cloudy, with a low around 40. Southwest wind 8 to 10 mph.
Monday
Partly sunny, with a high near 45. Southwest wind 10 to 15 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NNE Siasconset MA
 41.33°N 69.98°W (Elev. 0 ft)
Last Update:
2:06 am EST Mar 3, 2026
Forecast Valid:
2am EST Mar 3, 2026-6pm EDT Mar 9, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation