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 >

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Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Mostly Cloudy

64°F

18°C

Humidity	54%
Wind Speed	SW 20 mph
Barometer	29.93 in (1013.6 mb)
Dewpoint	47°F (8°C)
Visibility	10.00 mi
Last update	20 Apr 1:56 pm EDT

More Information:

Local Forecast Office More Local Wx 3 Day History Mobile Weather Hourly Weather Forecast

Extended Forecast for

Great River NY

This
Afternoon

Mostly Sunny
High: 64 °F
Tonight

Partly Cloudy
Low: 50 °F
Wednesday

Breezy.
Slight Chance
Showers then
Showers
Likely
High: 60 °F
Wednesday
Night

Breezy.
Showers then
Mostly Clear
Low: 35 °F
Thursday

Mostly Sunny
and Breezy
High: 51 °F
Thursday
Night

Partly Cloudy
and Breezy
then Mostly
Clear
Low: 39 °F
Friday

Sunny
High: 61 °F
Friday
Night

Mostly Clear
Low: 45 °F
Saturday

Mostly Sunny
High: 62 °F

Detailed Forecast

This Afternoon

Mostly sunny, with a high near 64. Southwest wind around 15 mph.

Tonight

Partly cloudy, with a low around 50. Southwest wind 11 to 14 mph.

Wednesday

A chance of showers, then showers likely and possibly a thunderstorm after 3pm. Increasing clouds, with a high near 60. Breezy, with a south wind 15 to 20 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. 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 51. Breezy, with a west wind 20 to 22 mph, with gusts as high as 37 mph.

Thursday Night

Mostly clear, with a low around 39. Breezy.

Friday

Sunny, with a high near 61.

Friday Night

Mostly clear, with a low around 45.

Saturday

Mostly sunny, with a high near 62.

Saturday Night

Rain likely, mainly after 2am. Mostly cloudy, with a low around 48. Chance of precipitation is 60%.