Current conditions at
Islip, Long Island Mac Arthur Airport (KISP)
Lat: 40.79°NLon: 73.1°WElev: 98ft.
A Few Clouds
45°F
7°C
| Humidity | 42% |
| Wind Speed | NW 12 mph |
| Barometer | 30.14 in (1020.7 mb) |
| Dewpoint | 23°F (-5°C) |
| Visibility | 10.00 mi |
| Wind Chill | 39°F (4°C) |
| Last update | 18 Nov 9:56 am EST |
Extended Forecast for
Ronkonkoma NY
Today

High: 48 °F
Mostly Sunny
Tonight
Low: 37 °F
Mostly Cloudy
then Chance
RainWednesday

High: 51 °F
Slight Chance
RainWednesday Night

Low: 37 °F
Mostly Cloudy
Thursday

High: 52 °F
Partly Sunny
Thursday Night

Low: 43 °F
Mostly Cloudy
Friday

High: 58 °F
Chance Rain
Friday Night

Low: 42 °F
Chance Rain
Saturday

High: 53 °F
Partly Sunny
Detailed Forecast
Today
Mostly sunny, with a high near 48. West wind 11 to 14 mph.
Tonight
A 40 percent chance of rain after 1am. Increasing clouds, with a low around 37. West wind 5 to 7 mph becoming calm in the evening.
Wednesday
A 20 percent chance of rain before 1pm. Cloudy, then gradually becoming mostly sunny, with a high near 51. Calm wind becoming north around 6 mph in the morning.
Wednesday Night
Mostly cloudy, with a low around 37. Calm wind becoming north around 5 mph after midnight.
Thursday
Partly sunny, with a high near 52. Northeast wind around 7 mph.
Thursday Night
Mostly cloudy, with a low around 43.
Friday
A 40 percent chance of rain. Mostly cloudy, with a high near 58.
Friday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 42.
Saturday
Partly sunny, with a high near 53.
Saturday Night
Partly cloudy, with a low around 36.
Sunday
Mostly sunny, with a high near 53.
Sunday Night
Partly cloudy, with a low around 39.
Monday
Mostly sunny, with a high near 55.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
Ronkonkoma NY
40.81°N 73.11°W (Elev. 98 ft)
40.81°N 73.11°W (Elev. 98 ft)
5:29 am EST Nov 18, 2025
10am EST Nov 18, 2025-6pm EST Nov 24, 2025


