HOLTSVILLE, NY 11742 Weather Forecast & Current Conditions

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ISLIP, NY
Current Weather

1:56 PM EDT AUG 18, 2025
Broken Clouds
73°F
Feels Like: 73°F
Dewpoint: 59°F
Rel. Hum.: 62%
Visibility: 10 miles
Wind: ENE at 10 mph, gusts to 20
Pressure: 30.15 inches
Last 72 hours

Local Area Snow Depth

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HOLTSVILLE, NY 11742
Weather Forecast

Snowfall Forecast pages
Snow Depth pages
THIS AFTERNOON
Partly sunny. Highs in the mid 70s. East winds 10 to 15 mph with gusts up to 30 mph.
TONIGHT
Partly cloudy. Lows around 60. East winds 10 to 15 mph.
TUESDAY
Mostly sunny. Highs in the mid 70s. East winds 10 to 15 mph with gusts up to 25 mph.
TUESDAY NIGHT
Partly cloudy in the evening, then becoming mostly cloudy. Lows in the lower 60s. East winds 5 to 10 mph. Gusts up to 20 mph in the evening.
WEDNESDAY
Partly sunny. A slight chance of showers in the afternoon. Highs in the mid 70s. East winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 20 percent.
WEDNESDAY NIGHT
Mostly cloudy in the evening, then becoming partly cloudy. Lows in the mid 60s.
THURSDAY
Mostly sunny. Highs in the upper 70s.
THURSDAY NIGHT
Partly cloudy and breezy. Lows in the lower 60s.
FRIDAY
Sunny. Highs in the lower 80s.
FRIDAY NIGHT
Mostly clear. Lows in the upper 60s.
SATURDAY
Sunny. Highs around 80.
SATURDAY NIGHT
Mostly clear in the evening, then becoming partly cloudy. Lows in the upper 60s.
SUNDAY
Partly sunny with a 40 percent chance of showers. Highs around 80.

Visible Weather Satellite
HOLTSVILLE, NY 11742
Infrared Weather Satellite
HOLTSVILLE, NY 11742
NEXRAD Weather Radar
HOLTSVILLE, NY 11742

ISLIP, NY 3 hourly weather forecast

weather forecast created  8:00 AM EDT  8/18/2025
Monday
18 AUG 2025
HOLTSVILLE, NY 11742 weather forecast Day 1, 12 hours 2 PM 75° 75° Mostly Cloudy 1%

0% Thunder
( 0% severe)
NE   14 52% 56°
High 76° HOLTSVILLE, NY 11742 weather forecast Day 1, 15 hours 5 PM 75° 75° Partly Cloudy E   12 50% 55°
Partly Cloudy



HOLTSVILLE, NY 11742 weather forecast Day 1, 18 hours 8 PM 69° 69° Partly Cloudy 1%

0% Thunder
( 0% severe)
E   10 63% 56°
HOLTSVILLE, NY 11742 weather forecast Day 1, 21 hours 11 PM 66° 66° Partly Cloudy E   9 65% 54°
Tuesday
19 AUG 2025
HOLTSVILLE, NY 11742 weather forecast Day 2, 0 hours 2 AM 64° 64° Partly Cloudy 1%

0% Thunder
( 1% severe)
E   8 67% 53°
Low 62° HOLTSVILLE, NY 11742 weather forecast Day 2, 3 hours 5 AM 62° 61° Partly Cloudy ENE   9 72% 53°
High 77° HOLTSVILLE, NY 11742 weather forecast Day 2, 6 hours 8 AM 68° 68° Partly Cloudy 0%

0% Thunder
( 0% severe)
ENE   10 63% 55°

Partly Cloudy



HOLTSVILLE, NY 11742 weather forecast Day 2, 9 hours 11 AM 74° 74° Partly Cloudy E   12 48% 53°
HOLTSVILLE, NY 11742 weather forecast Day 2, 12 hours 2 PM 75° 75° Partly Cloudy 0%

0% Thunder
( 0% severe)
ESE   13 46% 53°
HOLTSVILLE, NY 11742 weather forecast Day 2, 15 hours 5 PM 73° 73° Partly Cloudy ESE   12 49% 53°
HOLTSVILLE, NY 11742 weather forecast Day 2, 18 hours 8 PM 68° 68° Partly Cloudy 1%

0% Thunder
( 1% severe)
ESE   8 63% 55°
HOLTSVILLE, NY 11742 weather forecast Day 2, 21 hours 11 PM 67° 67° Mostly Cloudy ESE   7 68% 56°
Wednesday
20 AUG 2025
HOLTSVILLE, NY 11742 weather forecast Day 3, 0 hours 2 AM 65° 65° Mostly Cloudy 4%

0% Thunder
( 1% severe)
E   7 75% 57°
Low 64° HOLTSVILLE, NY 11742 weather forecast Day 3, 3 hours 5 AM 65° 65° Mostly Cloudy E   7 78% 58°
High 78° HOLTSVILLE, NY 11742 weather forecast Day 3, 6 hours 8 AM 70° 70° Mostly Cloudy 9%

0% Thunder
( 1% severe)
E   8 71% 60°

Mostly Cloudy



HOLTSVILLE, NY 11742 weather forecast Day 3, 9 hours 11 AM 74° 74° Mostly Cloudy E   12 59% 59°
HOLTSVILLE, NY 11742 weather forecast Day 3, 15 hours 2 PM 76° 78° Mostly Cloudy 10%
RAIN
<.01 in
0% Thunder
( 6% severe)
E   13 56% 59°
HOLTSVILLE, NY 11742 weather forecast Day 3, 18 hours 5 PM 74° 74° Mostly Cloudy E   12 62% 60°
HOLTSVILLE, NY 11742 weather forecast Day 3, 21 hours 8 PM 69° 69° Mostly Cloudy     E   9 76% 61°

ISLIP, NY extended weather forecast

Thursday
21 AUG 2025
Friday
22 AUG 2025
Saturday
23 AUG 2025
Sunday
24 AUG 2025
Monday
25 AUG 2025
Low 61° Low 61° Low 65° Low 67° Low 65°
High 80° High 78° High 79° High 80° High 79°
HOLTSVILLE, NY 11742 weather forecast Day 4 HOLTSVILLE, NY 11742 weather forecast Day 5 HOLTSVILLE, NY 11742 weather forecast Day 6 HOLTSVILLE, NY 11742 weather forecast Day 7 <!--SEARCHED_TOWN_NAME--> weather forecast Day 8
Partly Cloudy
9% Rain
Partly Cloudy
16% Rain
Partly Cloudy
27% Rain
Overcast
48% Rain
Mostly Cloudy
48% Rain
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