Photo: Fisher Island's Club · CC BY 4.0Fisher Island has some of the mildest winter nights among U.S. towns
High summer brings afternoon highs near 89°. It is a wet place: more rain and snow fall here than on 97% of U.S. towns. The latest 30-year average runs 2.0° warmer than 1901–2000’s, with February up the most. Plan time outside from November to April, when highs sit at 76–82°.
A year in Fisher Island at a glance
Each month’s typical high and low, and what it brings.
What stands out about Fisher Island’s climate
Compared with towns across the U.S., with Fisher Island’s place in Florida beside it.
What a year in Fisher Island feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
Frost is rare
Frost and day counts come from NOAA’s station at Miami Beach, FL, 3 miles from the town’s center, at about the same height.
The 2023 USDA map puts Fisher Island’s center in zone 11a: the coldest night of a typical winter, averaged over 1991–2020, reaches about 43°. Plant labels use the zone; frost dates tell you when to plant.
90° days by month
Average days at 90° or more
About 61 inches of rain a year
June is the wettest month and December the driest. Rain falls on about 112 days a year. Snow is rare: about 0.0" in a normal year at Miami Beach, FL, so most winters see none.
Rain + melted snow by month
Inches of water
Heating and cooling a home in Fisher Island
3% of the work is heating, so air conditioning is the bigger bill. No month averages under 55°.
Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. NOAA normals at Miami Beach, FL.
Living with Fisher Island’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
Zone 11a. Frost comes about 1 winter in 500, so tender plants can often stay out through winter.
Months with highs of 62–84° and lows of 40° or more: January, February, March, April, November and December.
Parks & trails →Of the yearly building losses FEMA expects in Fisher Island from natural hazards, hurricanes are the largest share (58%); heat waves, cold waves, winter storms and ice storms together are 6%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Fisher Island and its neighbors
Every town next door is within a degree of Fisher Island in January and July, closer than the 5 km grid can tell apart. Tap a town to see its climate.
Climates most like Fisher Island’s, farther away
TownRatings’ own comparison of NOAA 1991–2020 normals, not a NOAA product: places of 5,000+ at least 150 miles away, one per state, closest on January low, July high, precipitation and snow.
| Town | Jan. low | July high | Precip. | Snow |
|---|---|---|---|---|
| Fisher Island, FL | 62° | 89° | 61" | 0.0" |
| Heeia, HI | 66° | 84° | 51" | 0.0" |
| Galliano, LA | 46° | 90° | 63" | 0.0" |
| Galveston, TX | 48° | 89° | 52" | 0.1" |
| Gulf Shores, AL | 44° | 90° | 62" | 0.0" |
Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value. Snow and frost-free days come from the nearest weather station, so neighbors often share them.
Warmer than it used to be
The last 30 years in Fisher Island averaged 2.0° warmer than the 1900s. The biggest change is in February (+2.7°).
A bigger shift than in 90% of U.S. towns.
Change by month
The two periods overlap (1991–2000 is in both), which makes the gap a little smaller than it would be between separate periods.
How Fisher Island compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Fisher Island’s place among Florida’s.
Fisher Island weather by month
Highs, lows and precipitation from NOAA’s grid at Fisher Island’s center; snow, wet days and snow on the ground from Miami Beach, FL. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 76° | 62° | 2.4" | 0.0" | 7 | 0 | 63° – 73° |
| February | 77° | 63° | 2.3" | 0.0" | 5 | 0 | 63° – 76° |
| March | 79° | 66° | 2.5" | 0.0" | 6 | 0 | 66° – 78° |
| April | 82° | 70° | 3.3" | 0.0" | 6 | 0 | 72° – 81° |
| May | 85° | 74° | 5.6" | 0.0" | 8 | 0 | 76° – 82° |
| June | 88° | 77° | 8.9" | 0.0" | 14 | 0 | 80° – 86° |
| July | 89° | 78° | 6.4" | 0.0" | 12 | 0 | 82° – 85° |
| August | 90° | 78° | 7.8" | 0.0" | 13 | 0 | 82° – 85° |
| September | 88° | 77° | 8.6" | 0.0" | 15 | 0 | 81° – 84° |
| October | 85° | 74° | 7.3" | 0.0" | 12 | 0 | 78° – 83° |
| November | 81° | 69° | 3.4" | 0.0" | 8 | 0 | 71° – 79° |
| December | 78° | 65° | 2.3" | 0.0" | 6 | 0 | 61° – 78° |
| Year | 83° | 71° | 60.6" | 0.0" | 112 | 0 |
How much a month can swing
A normal is an average. December swings the most: from 1991 to 2020 its average ranged from 61° to 78°. August is the most reliable, staying within 3°.
Where Fisher Island’s numbers come from
Normals are 30-year averages, not a forecast. How TownRatings reads climate data →
- Temperatures and precipitation: NOAA’s gridded 1991–2020 normals for the 5 km cell at Fisher Island’s center.
- Snow: Miami Beach, FL.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Miami Beach, FL, 3 miles from the town’s center, at about the same height; the nearest station that passes our checks for distance, height and agreement with the grid.
- Growing zone: USDA Plant Hardiness Zone Map, 2023. USDA Agricultural Research Service and PRISM Group, Oregon State University, prism.oregonstate.edu/phzm, accessed 8 Oct 2026.
- Then and now: NOAA’s gridded normals for 1901–2000 at the same cell.
- Storms and extremes: FEMA National Risk Index (expected annual losses to buildings).
Common questions about Fisher Island’s climate
What is the weather like in Fisher Island?
A typical July afternoon reaches 89°, a January night drops to 62°, and snow is almost unheard of. Milder January nights than all but 79 U.S. towns; hotter July afternoons than 74% of U.S. towns.
How cold does it get in Fisher Island in winter?
January nights average 62°. A night at 32° or below comes in only some winters (0.0 a year on average). In the coldest January of the last 30 years the month averaged 63°.
How much snow does Fisher Island get?
About 0.0 inches in a normal winter at Miami Beach, FL, so most winters see none.
How hot does it get in Fisher Island?
July, with a typical high of 89° and a low of 78°. About 30 days a year reach 90° (Miami Beach, FL).
When is the first and last frost in Fisher Island?
Most years have no frost at all: a 32° night comes in about 0% of winters at Miami Beach, FL, usually in December or January.
What growing zone is Fisher Island in?
Zone 11a on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about 43°.
What is the best time of year to visit Fisher Island?
By one simple rule (highs of 62–84° and lows of 40° or more), January, February, March, April, November and December. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Fisher Island getting warmer?
Yes: 1991–2020 averaged 2.0° warmer than 1901–2000 on NOAA’s grid. A bigger shift than 90% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Fisher Island.
Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000; USDA/PRISM 2023 hardiness zones; FEMA National Risk Index. Today’s forecast: National Weather Service.