LAKE RONKONKOMA, NY 11779 Weather Forecast & Current Conditions

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ISLIP, NY
Current Weather

12:56 PM EDT MAY 27, 2026
Broken Clouds
73°F
Feels Like: 73°F
Dewpoint: 66°F
Rel. Hum.: 79%
Visibility: 10 miles
Wind: SSW at 12 mph
Pressure:
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LAKE RONKONKOMA, NY 11779
Weather Forecast

Snowfall Forecast pages
Snow Depth pages
TODAY
Mostly cloudy. Scattered showers this morning. Highs in the lower 80s. Southwest winds 10 to 15 mph. Chance of rain 30 percent.
TONIGHT
Mostly cloudy with a slight chance of showers in the evening, then partly cloudy after midnight. Lows in the lower 60s. West winds 5 to 10 mph, becoming north after midnight. Chance of rain 20 percent.
THURSDAY
Sunny. Highs around 80. North winds 10 to 15 mph.
THURSDAY NIGHT
Mostly clear. Lows in the upper 50s. Northwest winds 10 to 15 mph.
FRIDAY
Sunny. Highs in the upper 70s. West winds 5 to 10 mph.
FRIDAY NIGHT
Partly cloudy in the evening, then mostly cloudy with a chance of showers after midnight. Lows in the upper 50s. Chance of rain 30 percent.
SATURDAY
Partly sunny. A chance of showers in the morning. Highs in the mid 70s. Chance of rain 30 percent.
SATURDAY NIGHT
Partly cloudy in the evening, then clearing. Lows in the lower 50s.
SUNDAY
Sunny. Highs in the lower 70s.
SUNDAY NIGHT
Partly cloudy in the evening, then becoming mostly cloudy. Lows in the mid 50s.
MONDAY
Mostly sunny. Highs in the lower 70s.
MONDAY NIGHT
Partly cloudy. Lows in the mid 50s.
TUESDAY
Mostly sunny. Highs in the lower 70s.

Visible Weather Satellite
LAKE RONKONKOMA, NY 11779
Infrared Weather Satellite
LAKE RONKONKOMA, NY 11779
NEXRAD Weather Radar
LAKE RONKONKOMA, NY 11779

ISLIP, NY 3 hourly weather forecast

weather forecast created  8:00 AM EDT  5/27/2026
Wednesday
27 MAY 2026
LAKE RONKONKOMA, NY 11779 weather forecast Day 1, 12 hours 2 PM 79° 81° Mostly Cloudy 6%

0% Thunder
( 4% severe)
SW   13 62% 65°
High 80° LAKE RONKONKOMA, NY 11779 weather forecast Day 1, 15 hours 5 PM 79° 81° Partly Cloudy SW   12 60% 64°
Mostly Cloudy



LAKE RONKONKOMA, NY 11779 weather forecast Day 1, 18 hours 8 PM 73° 73° Mostly Cloudy 11%
RAIN
<.01 in
0% Thunder
( 9% severe)
WSW   9 73% 64°
LAKE RONKONKOMA, NY 11779 weather forecast Day 1, 21 hours 11 PM 70° 70° Mostly Cloudy NNW   8 68% 59°
Thursday
28 MAY 2026
LAKE RONKONKOMA, NY 11779 weather forecast Day 2, 0 hours 2 AM 66° 66° Mostly Cloudy 2%

0% Thunder
( 1% severe)
N   9 65% 54°
Low 62° LAKE RONKONKOMA, NY 11779 weather forecast Day 2, 3 hours 5 AM 62° 61° Partly Cloudy N   8 70% 52°
High 79° LAKE RONKONKOMA, NY 11779 weather forecast Day 2, 6 hours 8 AM 66° 66° Partly Cloudy 1%

0% Thunder
( 0% severe)
N   9 63% 53°

Partly Cloudy



LAKE RONKONKOMA, NY 11779 weather forecast Day 2, 9 hours 11 AM 75° 75° Clear NNW   13 43% 51°
LAKE RONKONKOMA, NY 11779 weather forecast Day 2, 12 hours 2 PM 77° 78° Partly Cloudy 4%

0% Thunder
( 2% severe)
NNW   14 37% 49°
LAKE RONKONKOMA, NY 11779 weather forecast Day 2, 15 hours 5 PM 75° 75° Partly Cloudy NNW   15 40% 49°
LAKE RONKONKOMA, NY 11779 weather forecast Day 2, 18 hours 8 PM 68° 68° Clear 0%

0% Thunder
( 0% severe)
NNW   10 53% 50°
LAKE RONKONKOMA, NY 11779 weather forecast Day 2, 21 hours 11 PM 64° 64° Clear NNW   9 60% 50°
Friday
29 MAY 2026
LAKE RONKONKOMA, NY 11779 weather forecast Day 3, 0 hours 2 AM 61° 60° Clear 0%

0% Thunder
( 0% severe)
NNW   8 65% 49°
Low 57° LAKE RONKONKOMA, NY 11779 weather forecast Day 3, 3 hours 5 AM 57° 55° Clear NW   8 72% 48°
High 77° LAKE RONKONKOMA, NY 11779 weather forecast Day 3, 6 hours 8 AM 63° 63° Partly Cloudy 0%

0% Thunder
( 0% severe)
NW   8 60% 49°

Partly Cloudy



LAKE RONKONKOMA, NY 11779 weather forecast Day 3, 9 hours 11 AM 72° 72° Clear WNW   8 41% 47°
LAKE RONKONKOMA, NY 11779 weather forecast Day 3, 15 hours 2 PM 76° 78° Clear 0%

0% Thunder
( 1% severe)
W   10 36% 47°
LAKE RONKONKOMA, NY 11779 weather forecast Day 3, 18 hours 5 PM 73° 73° Partly Cloudy SW   13 43% 49°
LAKE RONKONKOMA, NY 11779 weather forecast Day 3, 21 hours 8 PM 65° 65° Partly Cloudy     SSW   10 63% 52°

ISLIP, NY extended weather forecast

Saturday
30 MAY 2026
Sunday
31 MAY 2026
Monday
1 JUN 2026
Tuesday
2 JUN 2026
Wednesday
3 JUN 2026
Low 52° Low 48° Low 56° Low 55° Low 58°
High 65° High 72° High 70° High 69° High 73°
LAKE RONKONKOMA, NY 11779 weather forecast Day 4 LAKE RONKONKOMA, NY 11779 weather forecast Day 5 LAKE RONKONKOMA, NY 11779 weather forecast Day 6 LAKE RONKONKOMA, NY 11779 weather forecast Day 7 <!--SEARCHED_TOWN_NAME--> weather forecast Day 8
Mostly Cloudy
26% Rain
Partly Cloudy
9% Rain
Mostly Cloudy
48% Rain
Overcast
62% Rain
Overcast
43% Rain
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