Jupiter Island, FL climate
Jupiter Island has warm winters and warm summers, with plenty of rain. A typical July afternoon reaches 90°, a January night drops to 57°, and snow is almost unheard of.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Jupiter Island feels like
Winter
Spring
Summer
Fall
Jupiter Island 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 | 74° | 57° | 2.9" | 0 | 9 | 0 | 58° – 70° |
| February | 76° | 59° | 2.5" | 0 | 8 | 0 | 59° – 74° |
| March | 78° | 62° | 3.2" | 0 | 8 | 0 | 62° – 76° |
| April | 82° | 67° | 3.2" | 0 | 9 | 0 | 70° – 79° |
| May | 85° | 71° | 4.7" | 0 | 10 | 0 | 75° – 80° |
| June | 88° | 75° | 8.1" | 0 | 14 | 0 | 80° – 84° |
| July | 90° | 76° | 5.8" | 0 | 14 | 0 | 81° – 85° |
| August | 90° | 76° | 7.8" | 0 | 16 | 0 | 81° – 85° |
| September | 88° | 76° | 7.9" | 0 | 16 | 0 | 80° – 84° |
| October | 85° | 72° | 5.8" | 0 | 14 | 0 | 76° – 82° |
| November | 80° | 66° | 3.6" | 0 | 10 | 0 | 68° – 78° |
| December | 76° | 60° | 2.8" | 0 | 10 | 0 | 57° – 75° |
| Year | 83° | 68° | 58.1" | 0.0" | 138 | 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 Jupiter Island
Jupiter Island gets 58 inches of rain and melted snow a year. June is the wettest month and February the driest. Rain or snow falls on about 138 days a year.
A year-round growing season
Heating and cooling a home in Jupiter Island
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Jupiter Island, 5% of that work is heating and 95% 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.
How Jupiter Island 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 Jupiter Island averaged 1.7° warmer than the 1900s. The biggest change is in February (+2.3°). The shift is larger than in 79% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Jupiter Island’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 57° to 75°. September is the most reliable, staying within 3°.
Common questions about Jupiter Island’s climate
What is the coldest month in Jupiter Island?
January, with a typical high of 74° and a low of 57°.
What is the hottest month in Jupiter Island?
July, with a typical high of 90° and a low of 76°. About 90 days a year reach 90°.
How much snow does Jupiter Island get?
Almost none. A normal year brings 0.0 inches.
When is the first frost in Jupiter Island?
Frost is uncommon. Only 13% of years see a night at 32° or below.
What is the rainiest month in Jupiter Island?
June, with 8.1 inches of rain and melted snow. The year totals 58 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Jupiter Island itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Stuart, FL (14 mi, snow) and Juno Beach, FL (12 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.