Port Salerno, Florida climate: Normal weather by month, frost dates and records
Port Salerno's normal year runs from 54°F January nights to 91°F August afternoons, with 64.2 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 23.2°C, January lows of 12°C, August highs of 33°C, 1,630 mm of precipitation a year.
- NOAA stationPort Salerno (5 mi W)
- Station IDUSC00087304
- Location27.10°N 80.26°W
- Elevation12 ft (4 m)
- Population (census place)10,957
On October 23, the normal high in Port Salerno is 84°F and the normal low 67°F, and the chance of measurable rain or snow is 37%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Port Salerno.
- Jan 74° 54°
- Feb 76° 55°
- Mar 79° 58°
- Apr 83° 62°
- May 86° 67°
- Jun 89° 72°
- Jul 90° 73°
- Aug 91° 74°
- Sep 89° 72°
- Oct 85° 68°
- Nov 79° 62°
- Dec 76° 57°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
What is the weather like in Port Salerno each month?
August is the warmest month, with normal highs of 91°F; January the coldest, with normal lows of 54°F. The most precipitation falls in June (9.56 in), the least in February (2.27 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 74°F | 54°F | 63.7°F | 3.17 | 7 | <1 | 1 | 10 h 40 min |
| February | 76°F | 55°F | 65.5°F | 2.27 | 7 | <1 | <1 | 11 h 10 min |
| March | 79°F | 58°F | 68.2°F | 3.95 | 7 | 1 | <1 | 12 h |
| April | 83°F | 62°F | 72.3°F | 2.87 | 7 | 3 | <1 | 12 h 50 min |
| May | 86°F | 67°F | 76.5°F | 5.73 | 10 | 6 | <1 | 13 h 30 min |
| June | 89°F | 72°F | 80.2°F | 9.56 | 15 | 14 | <1 | 13 h 50 min |
| July | 90°F | 73°F | 81.6°F | 7.00 | 15 | 22 | <1 | 13 h 40 min |
| August | 91°F | 74°F | 82.3°F | 9.03 | 18 | 24 | <1 | 13 h 10 min |
| September | 89°F | 72°F | 80.5°F | 9.17 | 17 | 12 | <1 | 12 h 20 min |
| October | 85°F | 68°F | 76.8°F | 5.05 | 12 | 4 | <1 | 11 h 30 min |
| November | 79°F | 62°F | 70.6°F | 3.44 | 10 | <1 | <1 | 10 h 50 min |
| December | 76°F | 57°F | 66.2°F | 2.92 | 10 | <1 | 1 | 10 h 30 min |
| Year (annual) | 83°F | 64°F | 73.7°F | 64.16 | 134 | 86 | 1 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 23°C | 12°C | 17.6°C | 81 mm |
| February | 25°C | 13°C | 18.6°C | 58 mm |
| March | 26°C | 14°C | 20.1°C | 100 mm |
| April | 28°C | 16°C | 22.4°C | 73 mm |
| May | 30°C | 19°C | 24.7°C | 146 mm |
| June | 32°C | 22°C | 26.8°C | 243 mm |
| July | 32°C | 23°C | 27.6°C | 178 mm |
| August | 33°C | 23°C | 27.9°C | 229 mm |
| September | 31°C | 22°C | 26.9°C | 233 mm |
| October | 30°C | 20°C | 24.9°C | 128 mm |
| November | 26°C | 17°C | 21.4°C | 87 mm |
| December | 24°C | 14°C | 19.0°C | 74 mm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00087304; annual normals. Wet days: 0.01 inch or more; 90°F days and freezing nights: NOAA's day counts. Daylight: sunrise to sunset on the 15th, computed from the latitude.
When is the best weather to visit Port Salerno?
Normal highs sit between 65°F and 85°F in January, February, March, April, November and December. Of those, January has the fewest days with rain (7).
That is a measurement, not a recommendation: it counts the months whose normal afternoon high sits between 65°F and 85°F, where a light layer is enough by day.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00087304.
When is the last frost in Port Salerno?
A night at 32°F or colder comes in only 33% of years in Port Salerno (NOAA). NOAA's median date of the last spring frost is January 26 and of the first autumn frost January 15.
NOAA puts the median frost-free season at 365 days, and the season without a hard freeze (28°F) at 365 days.
The USDA's 2023 Plant Hardiness Zone Map puts Port Salerno in zone 10b in ZIP code 34996, the nearest ZIP area.
Frost dates for every NOAA station in Florida · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00087304; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026. A 10% date means one year in ten has a frost after it in spring or before it in autumn.
How hot and how cold does it get in Port Salerno?
In a normal year in Port Salerno, 86 days a year reach 90°F, 1 night falls to 32°F or colder and 134 days bring measurable precipitation.
- Days at 90°F or more
- 86a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- 1a normal year
- Days that stay below freezing
- fewer than 1high of 32°F or less
- Days with 0.01 inch of precipitation
- 134a normal year
Source: NOAA NCEI 1991-2020 annual normals, station USC00087304.
How sunny is Port Salerno?
Over a year 80% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Port Salerno, 5.0 kWh per square metre a day. April is the sunniest month (84%) and June the cloudiest (77%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 80% | 3.5 |
| February | 81% | 4.3 |
| March | 82% | 5.3 |
| April | 84% | 6.1 |
| May | 83% | 6.4 |
| June | 77% | 5.9 |
| July | 79% | 5.9 |
| August | 79% | 5.6 |
| September | 78% | 5.0 |
| October | 81% | 4.5 |
| November | 80% | 3.6 |
| December | 78% | 3.2 |
Source: NASA POWER solar climatology, 2001-2020 (CERES SYN1deg). Satellite-based, for the 1-degree cell (about 100 km across) around the station, so it describes the area rather than the airport.
How much heating and cooling does Port Salerno need?
A normal year in Port Salerno brings 337 heating degree days, 94% fewer than the median U.S. place (5,373), and 3,528 cooling degree days, 3.9 times the median (908). No month reaches 300 heating degree days. For gardens and crops, NOAA counts 8,678 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 113 | 71 |
| February | 75 | 89 |
| March | 41 | 139 |
| April | 8 | 228 |
| May | 0 | 357 |
| June | 0 | 456 |
| July | 0 | 515 |
| August | 0 | 538 |
| September | 0 | 464 |
| October | 2 | 368 |
| November | 22 | 190 |
| December | 76 | 115 |
| Year (annual) | 337 | 3,528 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00087304. A degree day is one degree of a day's mean temperature below 65°F (heating) or above it (cooling); utilities use them to estimate energy use.
Has Port Salerno been warmer than normal lately?
2025 averaged 74.9°F, 1.2°F above the 1991-2020 normal of 73.7°F. 5 of the 5 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 74.9°F | +1.2°F | 40.90 |
| 2022 | 75.1°F | +1.4°F | 58.66 |
| 2023 | 75.9°F | +2.2°F | 71.97 |
| 2024 | 75.3°F | +1.6°F | 56.71 |
| 2025 | 74.9°F | +1.2°F | 50.12 |
Source: observed years: ACIS, station USC00087304. A year counts only with all twelve months complete.
How does Port Salerno's climate compare?
Port Salerno is warmer than 68 of the other 105 places with their own NOAA record in Florida, and wetter than 88. Across the 7,247 U.S. stations with normals, its annual mean of 73.7°F is warmer than 98%.
In the Köppen classification computed from these normals, Port Salerno is Cfa: temperate, no dry season, hot summer. What the classes mean.
Places with the most similar year elsewhere
Measured month by month on the normal high, low and precipitation, among places of 20,000 or more people in other states:
Source: NOAA NCEI 1991-2020 normals for every station PlainClimate covers. Similarity: the root-mean-square difference of the 36 monthly figures, precipitation weighted so an inch counts like 6°F.
Which places near Port Salerno share this climate record?
3 places have no NOAA station with 1991-2020 normals of their own, and this station is the nearest full record. A place's own climate can differ from these figures, by several degrees where it sits much higher or lower than the station, nearer the coast, or inside a large city's heat; for the larger places the next nearest records are named with their yearly mean, so the spread around them is visible, and places of 50,000 or more have their own page with NOAA's gridded normals.
- Hobe Sound, FL14,313 people · 8 mi E
- Indiantown, FL6,810 people · 14 mi W
- Jupiter Island, FL837 people · 11 mi SE
Source: Census Bureau 2024 Gazetteer (place centers) and Vintage 2024 population estimates. Distance and direction from the station to each place's center.
Questions about Port Salerno's climate
What is the coldest month in Port Salerno?
January, with a normal high of 74°F and a normal low of 54°F. The warmest is August (91°F by day, 74°F at night).
What is the rainiest month in Port Salerno?
June, with 9.56 in of precipitation in a normal year; the driest is February with 2.27 in.
What plant hardiness zone is Port Salerno in?
The USDA's 2023 map puts Port Salerno in zone 10b in ZIP code 34996, the nearest ZIP area.
Nearby and next
- Florida climateThe statewide normals and every place in the state
- Stuart, FL6 miles from this station, 75.3°F a year
- Nettles Island, FL13 miles from this station, 75.2°F a year
- Palm Beach Gardens, FL20 miles from this station, 74.4°F a year
- Juno Beach, FL21 miles from this station, 76.0°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made