Cold Temperatures and Some Snow

A strong cold front and low pressure system will press from the Central U.S. through the East over the next couple of days. The impressive cold front will allow a cold air mass to settle in east of the Rockies and numerous record low temperatures are likely the next few days, especially Wednesday morning. A streak of snow is also expected from the central Plains to northern New England. Read More >

Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Partly Cloudy

65°F

18°C

Humidity 52%
Wind Speed SW 12 mph
Barometer 29.94 in (1013.6 mb)
Dewpoint 47°F (8°C)
Visibility 10.00 mi
Last update 20 Apr 12:56 pm EDT
Extended Forecast for

2 Miles NNW Stony Brook NY

  • This
    Afternoon

    This Afternoon: Mostly sunny, with a high near 71. Southwest wind 13 to 15 mph.

    Mostly Sunny

    High: 71 °F

  • Tonight

    Tonight: Partly cloudy, with a low around 51. South wind 10 to 13 mph.

    Partly Cloudy

    Low: 51 °F

  • Wednesday

    Wednesday: A chance of showers, then showers likely and possibly a thunderstorm after 3pm.  Partly sunny, with a high near 63. South wind 13 to 18 mph, with gusts as high as 29 mph.  Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Slight Chance
    Showers then
    Showers
    Likely

    High: 63 °F

  • Wednesday
    Night

    Wednesday Night: Showers and possibly a thunderstorm before 8pm, then a slight chance of showers between 8pm and 11pm.  Low around 35. Breezy, with a west wind 17 to 23 mph, with gusts as high as 33 mph.  Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Breezy.
    Showers then
    Mostly Clear

    Low: 35 °F

  • Thursday

    Thursday: Mostly sunny, with a high near 53. Breezy, with a west wind around 23 mph, with gusts as high as 36 mph.

    Mostly Sunny
    and Breezy

    High: 53 °F

  • Thursday
    Night

    Thursday Night: Partly cloudy, with a low around 40. Breezy.

    Partly Cloudy
    and Breezy

    Low: 40 °F

  • Friday

    Friday: Sunny, with a high near 62.

    Sunny

    High: 62 °F

  • Friday
    Night

    Friday Night: Mostly clear, with a low around 46.

    Mostly Clear

    Low: 46 °F

  • Saturday

    Saturday: Mostly sunny, with a high near 64.

    Mostly Sunny

    High: 64 °F

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 71. Southwest wind 13 to 15 mph.
Tonight
Partly cloudy, with a low around 51. South wind 10 to 13 mph.
Wednesday
A chance of showers, then showers likely and possibly a thunderstorm after 3pm. Partly sunny, with a high near 63. South wind 13 to 18 mph, with gusts as high as 29 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
Showers and possibly a thunderstorm before 8pm, then a slight chance of showers between 8pm and 11pm. Low around 35. Breezy, with a west wind 17 to 23 mph, with gusts as high as 33 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday
Mostly sunny, with a high near 53. Breezy, with a west wind around 23 mph, with gusts as high as 36 mph.
Thursday Night
Partly cloudy, with a low around 40. Breezy.
Friday
Sunny, with a high near 62.
Friday Night
Mostly clear, with a low around 46.
Saturday
Mostly sunny, with a high near 64.
Saturday Night
Rain likely, mainly after 2am. Mostly cloudy, with a low around 49. Chance of precipitation is 60%.
Sunday
Rain likely. Mostly cloudy, with a high near 58. Chance of precipitation is 70%.
Sunday Night
Partly cloudy, with a low around 44.
Monday
Mostly sunny, with a high near 61.
Click Map For Forecast
Point Forecast:
2 Miles NNW Stony Brook NY
 40.92°N 73.15°W (Elev. 36 ft)
5:42 am EDT Apr 20, 2021
1pm EDT Apr 20, 2021-6pm EDT Apr 26, 2021
 
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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