Fishers Island weather by month
What a typical year looks like in Fishers Island, New York: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Montauk Airport, 22 km from Fishers Island; records cover 1998–2026.
The year at a glance
- Precipitation a year
- 44.3 in1125 mm
- Snow a year
- Rare
- Last spring freeze
- Apr 8
- First fall freeze
- Nov 15
- Heating degree days
- 5,041
- Cooling degree days
- 715
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are 13°−11° (heating, 99%) and 89°32° (cooling, 1%).
Month by month
Fishers Island in January
Highs average 40°4° and lows 28°−2°, with 3.6 in92 mm of precipitation in a typical January.
- Record high
- 64°18° (2020)
- Record low
- 5°−15° (2004)
- Heating degree days
- 972
- Cooling degree days
- 0
Fishers Island in February
Highs average 41°5° and lows 28°−2°, with 3.2 in81 mm of precipitation in a typical February.
- Record high
- 64°18° (2023)
- Record low
- −2°−19° (2016)
- Heating degree days
- 860
- Cooling degree days
- 0
Fishers Island in March
Highs average 46°8° and lows 33°1°, with 4.2 in106 mm of precipitation in a typical March.
- Record high
- 71°22° (2016)
- Record low
- 8°−13° (2003)
- Heating degree days
- 790
- Cooling degree days
- 0
Fishers Island in April
Highs average 55°13° and lows 41°5°, with 3.7 in93 mm of precipitation in a typical April.
- Record high
- 89°32° (2002)
- Record low
- 25°−4° (2019)
- Heating degree days
- 508
- Cooling degree days
- 1
Fishers Island in May
Highs average 64°18° and lows 50°10°, with 3.2 in81 mm of precipitation in a typical May.
- Record high
- 88°31° (2022)
- Record low
- 31°−1° (2008)
- Heating degree days
- 255
- Cooling degree days
- 7
Fishers Island in June
Highs average 74°23° and lows 60°15°, with 3.5 in89 mm of precipitation in a typical June.
- Record high
- 98°37° (2025)
- Record low
- 43°6° (2001)
- Heating degree days
- 42
- Cooling degree days
- 99
Fishers Island in July
Highs average 80°27° and lows 66°19°, with 2.8 in71 mm of precipitation in a typical July.
- Record high
- 98°37° (2011)
- Record low
- 51°11° (2009)
- Heating degree days
- 1
- Cooling degree days
- 257
Fishers Island in August
Highs average 80°26° and lows 66°19°, with 4 in102 mm of precipitation in a typical August.
- Record high
- 98°37° (2001)
- Record low
- 54°12° (2001)
- Heating degree days
- 2
- Cooling degree days
- 246
Fishers Island in September
Highs average 73°23° and lows 60°16°, with 3.6 in92 mm of precipitation in a typical September.
- Record high
- 91°33° (2010)
- Record low
- 39°4° (2000)
- Heating degree days
- 42
- Cooling degree days
- 95
Fishers Island in OctoberThis month
Highs average 63°17° and lows 51°11°, with 4.2 in107 mm of precipitation in a typical October.
- Record high
- 84°29° (2019)
- Record low
- 30°−1° (2003)
- Heating degree days
- 253
- Cooling degree days
- 10
Fishers Island in November
Highs average 54°12° and lows 42°5°, with 3.9 in99 mm of precipitation in a typical November.
- Record high
- 76°24° (2022)
- Record low
- 19°−7° (2018)
- Heating degree days
- 524
- Cooling degree days
- 0
Fishers Island in December
Highs average 45°7° and lows 34°1°, with 4.4 in110 mm of precipitation in a typical December.
- Record high
- 70°21° (1998)
- Record low
- 12°−11° (2004)
- Heating degree days
- 792
- Cooling degree days
- 0