Fishers Island, NY Weather Forecast & Alerts

Current conditions, 5-day forecast, and active NWS weather alerts for Fishers Island, NY.

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Current Conditions — Fishers Island, NY

GROTON/NEW LONDO (KGON)

Clear

55.4 F
Humidity:58%
Wind Speed:S 9.2 mph
Barometer:30.13 in
Dewpoint:41.0 F
Visibility:10.00 mi
Precip:--
Heat Index:NA
Wind Chill:NA
Apr 28 2026, 02:40 PM EDT
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5-Day Forecast — Fishers Island, NY

Tuesday

High 55 °F
Mostly Cloudy
Tuesday
Night
Low 44 °F
Mostly Cloudy
Wednesday

High 53 °F
Mostly Cloudy
Wednesday
Night
Low 48 °F
Rain
Thursday

High 53 °F
Rain Showers
Thursday
Night
Low 44 °F
Mostly Cloudy
Friday

High 55 °F
Mostly Sunny
Friday
Night
Low 42 °F
Mostly Clear
Saturday

High 51 °F
Slight Chance of Rain Showers

Detailed Forecast — Fishers Island, NY

Tuesday
Mostly Cloudy. High near 55°F. Wind 7 to 8 mph, with gusts as high as 13 mph.
Tuesday Night
Mostly Cloudy. Low around 44°F. Wind 6 to 7 mph, with gusts as high as 10 mph.
Wednesday
Mostly Cloudy. High near 53°F. Wind 6 to 9 mph, with gusts as high as 15 mph.
Wednesday Night
Rain. Low around 48°F. Wind 9 to 10 mph, with gusts as high as 16 mph.
Thursday
Rain Showers. High near 53°F. Wind 12 to 14 mph, with gusts as high as 20 mph.
Thursday Night
Mostly Cloudy. Low around 44°F. Wind 14 to 15 mph, with gusts as high as 22 mph.
Friday
Mostly Sunny. High near 55°F. Wind 15 to 16 mph, with gusts as high as 23 mph.
Friday Night
Mostly Clear. Low around 42°F. Wind 6 to 12 mph, with gusts as high as 16 mph.
Saturday
Slight Chance of Rain Showers. High near 51°F. Wind 5 to 10 mph, with gusts as high as 15 mph.
Saturday Night
Slight Chance of Rain. Low around 42°F. Wind 7 to 8 mph, with gusts as high as 13 mph.
Sunday
Partly Sunny. High near 53°F. Wind 10 to 14 mph, with gusts as high as 21 mph.
Sunday Night
Partly Cloudy. Low around 44°F. Wind 7 to 10 mph, with gusts as high as 15 mph.
Monday
Slight Chance of Showers. High near 55°F. Wind 8 to 14 mph, with gusts as high as 21 mph.
NY Radar
Current Radar • NY
Day 1 Outlook • April 28, 2026

Observation History — Fishers Island, NY

Time Wind
(mph)		 Vis
(mi)		 Weather Precip (in) Temperature (F) Relative
Humidity		 Wind
Chill
(F)		 Heat
Index
(F)		 Pressure
Air Dwpt altimeter
(in)		 sea level
(mb)
02:40 PM EDT S 9.2 10.00 Clear -- 55.4 41.0 58% NA NA 30.13 1020.3
02:35 PM EDT 9.2 10.00 Clear -- 55.4 41.0 58% NA NA 30.13 1020.3
02:25 PM EDT 8.1 10.00 Clear -- 55.4 42.8 62% NA NA 30.14 1020.7
02:15 PM EDT 10.4 10.00 Clear -- 55.4 42.8 62% NA NA 30.14 1020.7
02:10 PM EDT 9.2 10.00 Clear -- 55.4 41.0 58% NA NA 30.14 1020.7
02:05 PM EDT 9.2 10.00 Clear -- 55.4 41.0 58% NA NA 30.14 1020.7
02:00 PM EDT 9.2 10.00 Clear -- 55.4 42.8 62% NA NA 30.14 1020.7
01:50 PM EDT S 9.2 10.00 Clear -- 55.4 41.0 58% NA NA 30.14 1020.7
01:45 PM EDT 8.1 10.00 Clear -- 55.4 39.2 54% NA NA 30.15 1021.0
01:35 PM EDT 9.2 10.00 Clear -- 55.4 39.2 54% NA NA 30.15 1021.0
01:30 PM EDT SW 9.2 10.00 Clear -- 55.4 39.2 54% NA NA 30.15 1021.0
01:25 PM EDT 9.2 10.00 Clear -- 55.4 41.0 58% NA NA 30.15 1021.0
01:05 PM EDT 10.4 10.00 Clear -- 55.4 37.4 51% NA NA 30.15 1021.0
12:50 PM EDT 9.2 10.00 Clear -- 55.4 35.6 47% NA NA 30.15 1021.0
12:45 PM EDT 9.2 10.00 Clear -- 55.4 37.4 51% NA NA 30.15 1021.0
12:30 PM EDT 9.2 10.00 Clear -- 55.4 37.4 51% NA NA 30.15 1021.0
12:25 PM EDT 9.2 10.00 Clear -- 55.4 37.4 51% NA NA 30.15 1021.0
12:10 PM EDT 9.2 10.00 Clear -- 53.6 37.4 54% NA NA 30.16 1021.3
12:05 PM EDT 9.2 10.00 Clear -- 53.6 37.4 54% NA NA 30.16 1021.3
11:56 AM EDT SW 10.3 10.00 Clear -- 55.0 37.9 52% NA NA 30.16 1021.3
11:50 AM EDT SW 10.4 10.00 Clear -- 55.4 37.4 51% NA NA 30.15 1021.0
11:40 AM EDT 9.2 10.00 Clear -- 55.4 37.4 51% NA NA 30.15 1021.0
11:35 AM EDT SW 8.1 10.00 Clear -- 57.2 42.8 59% NA NA 30.15 1021.0
11:30 AM EDT 8.1 10.00 Clear -- 57.2 39.2 51% NA NA 30.15 1021.0

Regional Weather Observation

GROTON/NEW LONDO (KGON)

Clear
55.4 F

WESTERLY (KWST)

Clear
57.2 F

WILLIMANTIC (KIJD)

Clear
69.8 F

CHESTER (KSNC)

Clear
66.2 F

HARTFORD/BRAINAR (KHFD)

Clear
69.8 F

BLOCK ISLAND (KBID)

Clear
51.8 F
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