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)

Cloudy

44.6 F
Humidity:81%
Wind Speed:S 11.5 mph
Barometer:30.14 in
Dewpoint:39.2 F
Visibility:10.00 mi
Precip:--
Heat Index:NA
Wind Chill:38.8 F
Apr 22 2026, 01:40 PM EDT
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5-Day Forecast — Fishers Island, NY

Wednesday

High 46 °F
Rain Showers Likely
Wednesday
Night
Low 44 °F
Mostly Cloudy
Thursday

High 57 °F
Mostly Cloudy
Thursday
Night
Low 46 °F
Mostly Cloudy
Friday

High 53 °F
Mostly Cloudy
Friday
Night
Low 42 °F
Mostly Clear
Saturday

High 48 °F
Slight Chance of Rain Showers
Saturday
Night
Low 42 °F
Slight Chance of Rain
Sunday

High 51 °F
Mostly Cloudy

Detailed Forecast — Fishers Island, NY

Wednesday
Rain Showers Likely. High near 46°F. Wind 10 to 16 mph, with gusts as high as 23 mph.
Wednesday Night
Mostly Cloudy. Low around 44°F. Wind 3 to 9 mph, with gusts as high as 13 mph.
Thursday
Mostly Cloudy. High near 57°F. Wind 6 to 12 mph, with gusts as high as 22 mph.
Thursday Night
Mostly Cloudy. Low around 46°F. Wind 6 to 8 mph, with gusts as high as 13 mph.
Friday
Mostly Cloudy. High near 53°F. Wind 6 to 7 mph, with gusts as high as 12 mph.
Friday Night
Mostly Clear. Low around 42°F. Wind 6 to 7 mph, with gusts as high as 12 mph.
Saturday
Slight Chance of Rain Showers. High near 48°F. Wind 8 to 9 mph, with gusts as high as 14 mph.
Saturday Night
Slight Chance of Rain. Low around 42°F. Wind 3 to 7 mph, with gusts as high as 10 mph.
Sunday
Mostly Cloudy. High near 51°F. Wind 6 to 9 mph, with gusts as high as 14 mph.
Sunday Night
Partly Cloudy. Low around 44°F. Wind 5 to 7 mph, with gusts as high as 10 mph.
Monday
Slight Chance of Showers. High near 53°F. Wind 8 to 10 mph, with gusts as high as 16 mph.
Monday Night
Slight Chance of Showers. Low around 44°F. Wind 8 to 9 mph, with gusts as high as 14 mph.
Tuesday
Chance of Rain Showers. High near 53°F. Wind 10 to 13 mph, with gusts as high as 20 mph.
NY Radar
Current Radar • NY
Day 1 Outlook • April 22, 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)
01:40 PM EDT S 11.5 10.00 Cloudy -- 44.6 39.2 81% 38.8 NA 30.14 1020.7
01:35 PM EDT S 11.5 10.00 Cloudy -- 44.6 39.2 81% 38.8 NA 30.14 1020.7
01:20 PM EDT S 11.5 10.00 Cloudy -- 44.6 39.2 81% 38.8 NA 30.15 1021.0
01:15 PM EDT S 12.7 10.00 Cloudy -- 44.6 39.2 81% 38.5 NA 30.15 1021.0
12:55 PM EDT S 13.8 10.00 Cloudy -- 44.6 37.4 76% 38.1 NA 30.15 1021.0
12:45 PM EDT S 12.7 10.00 Cloudy -- 44.6 37.4 76% 38.5 NA 30.16 1021.3
12:35 PM EDT S 11.5 10.00 Cloudy -- 44.6 39.2 81% 38.8 NA 30.16 1021.3
12:20 PM EDT S 13.8 10.00 Cloudy -- 44.6 39.2 81% 38.1 NA 30.16 1021.3
12:10 PM EDT S 13.8 10.00 Cloudy -- 44.6 39.2 81% 38.1 NA 30.17 1021.7
12:00 PM EDT S 12.7 10.00 Cloudy -- 44.6 39.2 81% 38.5 NA 30.17 1021.7
11:50 AM EDT S 15.0 10.00 Cloudy -- 44.6 39.2 81% 37.8 NA 30.17 1021.7
11:35 AM EDT S 13.8 10.00 Cloudy -- 44.6 39.2 81% 38.1 NA 30.17 1021.7
11:20 AM EDT 12.7 10.00 Cloudy -- 44.6 39.2 81% 38.5 NA 30.18 1022.0
11:05 AM EDT S 15.0 10.00 Cloudy -- 44.6 39.2 81% 37.8 NA 30.18 1022.0
10:50 AM EDT S 15.0 10.00 Cloudy -- 42.8 39.2 87% 35.4 NA 30.18 1022.0
10:35 AM EDT S 13.8 10.00 Cloudy -- 42.8 37.4 81% 35.8 NA 30.18 1022.0
10:20 AM EDT S 12.7 10.00 Cloudy -- 42.8 37.4 81% 36.1 NA 30.19 1022.4
10:15 AM EDT S 13.8 10.00 Cloudy -- 42.8 37.4 81% 35.8 NA 30.19 1022.4
10:00 AM EDT S 12.7 10.00 Cloudy -- 42.8 37.4 81% 36.1 NA 30.19 1022.4
09:50 AM EDT S 15.0 10.00 Cloudy -- 42.8 37.4 81% 35.4 NA 30.19 1022.4
09:36 AM EDT 15.0 10.00 Cloudy -- 42.1 37.0 82% 34.5 NA 30.19 1022.4
09:35 AM EDT 13.8 10.00 Cloudy -- 42.8 37.4 81% 35.8 NA 30.19 1022.4
09:25 AM EDT 15.0 10.00 Cloudy -- 42.8 37.4 81% 35.4 NA 30.19 1022.4
09:20 AM EDT 12.7 10.00 Cloudy -- 42.8 39.2 87% 36.1 NA 30.19 1022.4

Regional Weather Observation

GROTON/NEW LONDO (KGON)

Cloudy
44.6 F

WESTERLY (KWST)

Cloudy
44.6 F

WILLIMANTIC (KIJD)

Cloudy
44.6 F

CHESTER (KSNC)

Cloudy
46.4 F

HARTFORD/BRAINAR (KHFD)

Cloudy
46.4 F

BLOCK ISLAND (KBID)

Cloudy
44.6 F
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