ST JAMES, NY 11780 Weather Forecast & Current Conditions

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ISLIP, NY
Current Weather

11:56 PM EDT JUL 17, 2025
Few Clouds
84°F
Feels Like: 85°F
Dewpoint: 63°F
Rel. Hum.: 49%
Visibility: 10 miles
Wind: WNW at 15 mph, gusts to 28
Pressure: 29.85 inches
Last 72 hours

Local Area Snow Depth

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ST JAMES, NY 11780
Weather Forecast

Snowfall Forecast pages
Snow Depth pages
TONIGHT
Mostly clear. Lows in the lower 70s. West winds 10 to 15 mph.
FRIDAY
Mostly sunny. Highs in the mid 80s. Northwest winds 10 to 15 mph.
FRIDAY NIGHT
Partly cloudy. Lows in the upper 60s. North winds around 5 mph.
SATURDAY
Partly sunny. A slight chance of showers in the afternoon. Highs in the mid 80s. East winds around 5 mph, becoming south in the afternoon. Chance of rain 20 percent.
SATURDAY NIGHT
Showers likely with scattered thunderstorms. Humid with lows in the lower 70s. South winds 5 to 10 mph. Chance of rain 60 percent.
SUNDAY
Partly sunny with a chance of showers. Highs in the mid 80s. Chance of rain 50 percent.
SUNDAY NIGHT
Partly cloudy in the evening, then clearing. Lows in the upper 60s.
MONDAY
Sunny. Highs in the mid 80s.
MONDAY NIGHT
Mostly clear. Lows in the mid 60s.
TUESDAY
Sunny. Highs in the lower 80s.
TUESDAY NIGHT
Partly cloudy. Lows in the upper 60s.
WEDNESDAY
Mostly sunny. Highs in the mid 80s.
WEDNESDAY NIGHT
Partly cloudy. Lows in the lower 70s.

Visible Weather Satellite
ST JAMES, NY 11780
Infrared Weather Satellite
ST JAMES, NY 11780
NEXRAD Weather Radar
ST JAMES, NY 11780

ISLIP, NY 3 hourly weather forecast

weather forecast created  8:00 PM EDT  7/17/2025
Friday
18 JUL 2025
ST JAMES, NY 11780 weather forecast Day 1, 0 hours 2 AM 80° 83° Partly Cloudy 0%

0% Thunder
( 0% severe)
NW   12 67% 68°
Low 75° ST JAMES, NY 11780 weather forecast Day 1, 3 hours 5 AM 76° 78° Partly Cloudy NW   10 69% 65°
High 84° ST JAMES, NY 11780 weather forecast Day 1, 6 hours 8 AM 76° 78° Partly Cloudy 0%

0% Thunder
( 0% severe)
NNW   10 66% 64°

Partly Cloudy



ST JAMES, NY 11780 weather forecast Day 1, 9 hours 11 AM 79° 80° Partly Cloudy NNW   10 52% 60°
ST JAMES, NY 11780 weather forecast Day 1, 12 hours 2 PM 82° 82° Mostly Cloudy 0%

0% Thunder
( 1% severe)
NNW   9 46% 59°
ST JAMES, NY 11780 weather forecast Day 1, 15 hours 5 PM 83° 83° Partly Cloudy NW   8 43% 58°
ST JAMES, NY 11780 weather forecast Day 1, 18 hours 8 PM 78° 79° Partly Cloudy 0%

0% Thunder
( 2% severe)
WNW   5 54% 60°
ST JAMES, NY 11780 weather forecast Day 1, 21 hours 11 PM 74° 74° Partly Cloudy S   2 69% 63°
Saturday
19 JUL 2025
ST JAMES, NY 11780 weather forecast Day 2, 0 hours 2 AM 72° 72° Partly Cloudy 1%

0% Thunder
( 1% severe)
ENE   2 76% 64°
Low 70° ST JAMES, NY 11780 weather forecast Day 2, 3 hours 5 AM 71° 71° Partly Cloudy ENE   3 76% 63°
High 83° ST JAMES, NY 11780 weather forecast Day 2, 6 hours 8 AM 74° 74° Partly Cloudy 8%

0% Thunder
( 1% severe)
SE   5 74% 65°

Mostly Cloudy



ST JAMES, NY 11780 weather forecast Day 2, 9 hours 11 AM 80° 82° Mostly Cloudy SSE   8 60% 65°
ST JAMES, NY 11780 weather forecast Day 2, 12 hours 2 PM 80° 82° Mostly Cloudy 15%
RAIN
<.01 in
0% Thunder
( 9% severe)
S   10 62% 66°
ST JAMES, NY 11780 weather forecast Day 2, 15 hours 5 PM 80° 82° Partly Cloudy S   12 62% 66°
ST JAMES, NY 11780 weather forecast Day 2, 18 hours 8 PM 77° 79° Mostly Cloudy 35%
RAIN
.5–1 in
0% Thunder
( 13% severe)
SSE   10 74% 68°
ST JAMES, NY 11780 weather forecast Day 2, 21 hours 11 PM 75° 75° Mostly Cloudy S   9 84% 70°

ISLIP, NY extended weather forecast

BAD DAY
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Low 63° Low 72° Low 67° Low 60° Low 65°
High 82° High 83° High 80° High 81° High 83°
ST JAMES, NY 11780 weather forecast Day 3 ST JAMES, NY 11780 weather forecast Day 4 ST JAMES, NY 11780 weather forecast Day 5 ST JAMES, NY 11780 weather forecast Day 6 ST JAMES, NY 11780 weather forecast Day 7
Partly Cloudy
5% Rain
Overcast
71% Rain
Clear
16% Rain
Clear
6% Rain
Partly Cloudy
17% Rain
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