Longboat Key, FL climate
Longboat Key has warm winters and warm summers, with plenty of rain. A typical July afternoon reaches 91°, a January night drops to 53°, and snow is almost unheard of.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Longboat Key feels like
Winter
Spring
Summer
Fall
Longboat Key weather by month
Average highs, lows, rain and snow for every month, from NOAA’s 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 72° | 53° | 2.7" | 0 | 8 | 0 | 56° – 68° |
| February | 74° | 55° | 2.1" | 0 | 6 | 0 | 56° – 72° |
| March | 77° | 59° | 3.1" | 0 | 6 | 0 | 61° – 74° |
| April | 82° | 64° | 2.6" | 0 | 6 | 0 | 69° – 78° |
| May | 87° | 70° | 3.4" | 0 | 7 | 0 | 74° – 82° |
| June | 90° | 74° | 7.8" | 0 | 14 | 0 | 81° – 85° |
| July | 91° | 76° | 7.6" | 0 | 17 | 0 | 82° – 85° |
| August | 91° | 76° | 9.0" | 0 | 18 | 0 | 82° – 85° |
| September | 90° | 75° | 7.2" | 0 | 14 | 0 | 80° – 84° |
| October | 85° | 69° | 3.0" | 0 | 8 | 0 | 74° – 81° |
| November | 79° | 61° | 1.9" | 0 | 5 | 0 | 65° – 76° |
| December | 74° | 56° | 2.5" | 0 | 6 | 0 | 53° – 73° |
| Year | 83° | 66° | 52.7" | 0.0" | 114 | 0 |
“Wet days” have at least 0.01" of rain or melted snow. “Snow on ground” counts days with 1" or more. The 30-year range is the coldest and warmest that month’s average temperature got between 1991 and 2020.
Rain and snow in Longboat Key
Longboat Key gets 53 inches of rain and melted snow a year. August is the wettest month and November the driest. Rain or snow falls on about 114 days a year.
A year-round growing season
Heating and cooling a home in Longboat Key
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Longboat Key, 10% of that work is heating and 90% is cooling, so air conditioning is the bigger bill.
Degree days measure how far each day’s average temperature falls below or rises above 65°, added up over a year. Source: NOAA station normals.
Longboat Key and its neighbors
Longboat Key borders 1 town with climate data. January nights across them vary by 0.2°. Bradenton Beach has both the coldest January nights (53°) and the hottest July afternoons (91°). Longboat Key’s January low is 53° and its July high 91°.
Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value.
How Longboat Key compares
Compared with every U.S. town and city on TownTapestry, each counted once.
Warmer than it used to be
The last 30 years in Longboat Key averaged 1.4° warmer than the 1900s. The biggest change is in December (+1.9°). The shift is larger than in 66% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Longboat Key’s spot on NOAA’s grid
How much a month can swing
A normal is an average, and real years wander around it. December swings the most: between 1991 and 2020 its average temperature ranged from 53° to 73°. July is the most reliable, staying within 3°.
Common questions about Longboat Key’s climate
What is the coldest month in Longboat Key?
January, with a typical high of 72° and a low of 53°.
What is the hottest month in Longboat Key?
July, with a typical high of 91° and a low of 76°. About 85 days a year reach 90°.
How much snow does Longboat Key get?
Almost none. A normal year brings 0.0 inches.
When is the first frost in Longboat Key?
Frost is uncommon. Only 31% of years see a night at 32° or below.
What is the rainiest month in Longboat Key?
August, with 9.0 inches of rain and melted snow. The year totals 53 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Longboat Key itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Bradenton 5 Ese, FL (9 mi, snow) and Sarasota Bradenton Airport, FL (5 mi, frost, heat and degree days). Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000.