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Heavy Rain and Flooding in the Southern Plains to the Great Lakes

Several days of heavy rainfall will lead to flash flooding and river flooding from the Southern Plains to the Southern Great Lakes. A band of freezing rain is forecast across portions of the Southern Plains into the Middle Mississippi Valley. Read More >

Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

A Few Clouds

16°C

60°F

Humidity 78%
Wind Speed SW 15 km/h
Barometer 1023.3 mb (30.22 in)
Dewpoint 12°C (53°F)
Visibility 16 km
Last update 21 Feb 3:56 pm EST
Extended Forecast for

West Sayville NY

  • Tonight

    Tonight: A 40 percent chance of showers, mainly before 3am.  Cloudy, with a low around 4. Southwest wind 14 to 16 km/h becoming north after midnight.

    Chance
    Showers

    Low: 4 °C

  • Thursday

    Thursday: Rain likely before 5pm, then rain and sleet likely.  Cloudy, with a temperature falling to around 1 by 1pm. Wind chill values between -5 and zero. Northeast wind 18 to 23 km/h.  Chance of precipitation is 70%. Little or no sleet accumulation expected.

    Rain Likely
    then
    Rain/Sleet
    Likely

    High: 5 °C

  • Thursday
    Night

    Thursday Night: Rain and sleet likely before 8pm, then a chance of rain.  Cloudy, with a low around 1. Northeast wind 18 to 21 km/h.  Chance of precipitation is 60%. Little or no sleet accumulation expected.

    Rain/Sleet
    Likely then
    Chance Rain

    Low: 1 °C

  • Friday

    Friday: Rain, mainly after noon.  High near 6. Wind chill values between zero and 5. East wind 14 to 18 km/h.  Chance of precipitation is 80%. New precipitation amounts between 5 and 7.5 mm possible.

    Chance Rain
    then Rain

    High: 6 °C

  • Friday
    Night

    Friday Night: A 40 percent chance of rain, mainly before midnight.  Cloudy, with a low around 4. Southeast wind 10 to 14 km/h becoming west after midnight.

    Chance Rain

    Low: 4 °C

  • Saturday

    Saturday: Mostly cloudy, with a steady temperature around -13.

    Mostly Cloudy

    High: 8 °C

  • Saturday
    Night

    Saturday Night: Rain, mainly after midnight.  Low around 4. Chance of precipitation is 90%.

    Chance Rain
    then Rain

    Low: 4 °C

  • Sunday

    Sunday: Rain, mainly before 3pm.  Areas of fog. High near 12. Chance of precipitation is 90%.

    Rain and
    Areas Fog

    High: 12 °C

  • Sunday
    Night

    Sunday Night: A 30 percent chance of showers before 7pm.  Patchy fog before 7pm.  Otherwise, partly cloudy, with a low around 5.

    Chance
    Showers and
    Patchy Fog
    then Partly
    Cloudy

    Low: 5 °C

Detailed Forecast

Tonight
A 40 percent chance of showers, mainly before 3am. Cloudy, with a low around 4. Southwest wind 14 to 16 km/h becoming north after midnight.
Thursday
Rain likely before 5pm, then rain and sleet likely. Cloudy, with a temperature falling to around 1 by 1pm. Wind chill values between -5 and zero. Northeast wind 18 to 23 km/h. Chance of precipitation is 70%. Little or no sleet accumulation expected.
Thursday Night
Rain and sleet likely before 8pm, then a chance of rain. Cloudy, with a low around 1. Northeast wind 18 to 21 km/h. Chance of precipitation is 60%. Little or no sleet accumulation expected.
Friday
Rain, mainly after noon. High near 6. Wind chill values between zero and 5. East wind 14 to 18 km/h. Chance of precipitation is 80%. New precipitation amounts between 5 and 7.5 mm possible.
Friday Night
A 40 percent chance of rain, mainly before midnight. Cloudy, with a low around 4. Southeast wind 10 to 14 km/h becoming west after midnight.
Saturday
Mostly cloudy, with a steady temperature around -13.
Saturday Night
Rain, mainly after midnight. Low around 4. Chance of precipitation is 90%.
Sunday
Rain, mainly before 3pm. Areas of fog. High near 12. Chance of precipitation is 90%.
Sunday Night
A 30 percent chance of showers before 7pm. Patchy fog before 7pm. Otherwise, partly cloudy, with a low around 5.
Monday
Partly sunny, with a high near 10.
Monday Night
Partly cloudy, with a low around 2.
Tuesday
Sunny, with a high near 8.
Tuesday Night
Mostly clear, with a low around 1.
Wednesday
Sunny, with a high near 8.
Click Map For Forecast
Point Forecast:
West Sayville NY
 40.74°N 73.1°W (Elev. 9 m)
3:42 pm EST Feb 21, 2018
4pm EST Feb 21, 2018-6pm EST Feb 28, 2018
 
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Additional Resources

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Hourly Weather Forecast

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