South Bay (15 mi S), Florida climate: Climate normals at a NOAA weather station
South Bay (15 mi S)'s normal year runs from 52°F January nights to 91°F August afternoons, with 57.2 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 23.3°C, January lows of 11°C, August highs of 33°C, 1,452 mm of precipitation a year.
- NOAA stationSouth Bay (15 mi S)
- Station IDUSC00088368
- Location26.47°N 80.64°W
- Elevation20 ft (6 m)
On October 14, the normal high in South Bay (15 mi S) is 87°F and the normal low 68°F.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for South Bay (15 mi S).
- Jan 76° 52°
- Feb 78° 54°
- Mar 80° 57°
- Apr 84° 61°
- May 87° 66°
- Jun 90° 72°
- Jul 91° 73°
- Aug 91° 74°
- Sep 90° 73°
- Oct 86° 67°
- Nov 82° 60°
- Dec 78° 55°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
What is the weather like at South Bay (15 mi S) each month?
August is the warmest month, with normal highs of 91°F; January the coldest, with normal lows of 52°F. The most precipitation falls in June (9.63 in), the least in December (2.11 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 76°F | 52°F | 63.8°F | 2.50 | – | <1 | 1 | 10 h 40 min |
| February | 78°F | 54°F | 66.3°F | 2.30 | – | <1 | <1 | 11 h 20 min |
| March | 80°F | 57°F | 68.7°F | 2.81 | – | 1 | <1 | 12 h |
| April | 84°F | 61°F | 72.5°F | 2.89 | – | 3 | <1 | 12 h 50 min |
| May | 87°F | 66°F | 76.8°F | 4.78 | – | 7 | <1 | 13 h 30 min |
| June | 90°F | 72°F | 80.7°F | 9.63 | – | 14 | <1 | 13 h 50 min |
| July | 91°F | 73°F | 82.1°F | 7.93 | – | 22 | <1 | 13 h 40 min |
| August | 91°F | 74°F | 82.5°F | 8.49 | – | 24 | <1 | 13 h 10 min |
| September | 90°F | 73°F | 81.0°F | 7.45 | – | 13 | <1 | 12 h 20 min |
| October | 86°F | 67°F | 76.9°F | 4.05 | – | 5 | <1 | 11 h 30 min |
| November | 82°F | 60°F | 70.8°F | 2.22 | – | <1 | <1 | 10 h 50 min |
| December | 78°F | 55°F | 66.5°F | 2.11 | – | <1 | <1 | 10 h 30 min |
| Year (annual) | 84°F | 64°F | 74.0°F | 57.16 | – | 89 | 1 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 24°C | 11°C | 17.7°C | 64 mm |
| February | 26°C | 12°C | 19.1°C | 58 mm |
| March | 27°C | 14°C | 20.4°C | 71 mm |
| April | 29°C | 16°C | 22.5°C | 73 mm |
| May | 31°C | 19°C | 24.9°C | 121 mm |
| June | 32°C | 22°C | 27.1°C | 245 mm |
| July | 33°C | 23°C | 27.8°C | 201 mm |
| August | 33°C | 23°C | 28.1°C | 216 mm |
| September | 32°C | 23°C | 27.2°C | 189 mm |
| October | 30°C | 20°C | 24.9°C | 103 mm |
| November | 28°C | 16°C | 21.6°C | 56 mm |
| December | 25°C | 13°C | 19.2°C | 54 mm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00088368; 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.
Which months are mildest at South Bay (15 mi S)?
Normal highs sit between 65°F and 85°F in January, February, March, April, November and December.
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 USC00088368.
When is the last frost at South Bay (15 mi S)?
A night at 32°F or colder comes in only 29% of years in South Bay (15 mi S) (NOAA). NOAA's median date of the last spring frost is January 18 and of the first autumn frost January 14.
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 South Bay (15 mi S) in zone 10a in ZIP code 33493, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, the station is in zone 10a: the coldest night of a typical year reaches 33°F (15 complete years).
Frost dates for every NOAA station in Florida · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00088368; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026; the station zone: ACIS daily lows, 1991-2020. 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 at South Bay (15 mi S)?
In a normal year in South Bay (15 mi S), 89 days a year reach 90°F and 1 night falls to 32°F or colder.
- Days at 90°F or more
- 89a 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
Source: NOAA NCEI 1991-2020 annual normals, station USC00088368.
How sunny is it at South Bay (15 mi S)?
Over a year 78% of the sunlight that would reach the ground under clear skies gets through the clouds at South Bay (15 mi S), 4.8 kWh per square metre a day. April is the sunniest month (82%) and June the cloudiest (73%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 78% | 3.5 |
| February | 79% | 4.3 |
| March | 81% | 5.3 |
| April | 82% | 6.0 |
| May | 79% | 6.1 |
| June | 73% | 5.5 |
| July | 76% | 5.7 |
| August | 76% | 5.4 |
| September | 75% | 4.8 |
| October | 79% | 4.4 |
| November | 80% | 3.7 |
| December | 78% | 3.3 |
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 many heating and cooling degree days does South Bay (15 mi S) record?
A normal year at South Bay (15 mi S) brings 306 heating degree days, 94% fewer than the median U.S. place (5,373), and 3,622 cooling degree days, 4.0 times the median (908). No month reaches 300 heating degree days. For gardens and crops, NOAA counts 8,801 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 109 | 72 |
| February | 62 | 97 |
| March | 35 | 149 |
| April | 7 | 232 |
| May | 0 | 366 |
| June | 0 | 472 |
| July | 0 | 529 |
| August | 0 | 542 |
| September | 0 | 480 |
| October | 3 | 370 |
| November | 19 | 194 |
| December | 73 | 119 |
| Year (annual) | 306 | 3,622 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00088368. 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.
Have recent years at South Bay (15 mi S) been warmer than normal?
2025 averaged 74.4°F, 0.4°F above the 1991-2020 normal of 74.0°F. 2 of the 2 complete years since 2024 ran warmer than the normal.
| Year | Mean | Against normal | Precip. |
|---|---|---|---|
| 2024 | 74.5°F | +0.5°F | 54.12 |
| 2025 | 74.4°F | +0.4°F | 36.11 |
Source: observed years: ACIS, station USC00088368. A year counts only with all twelve months complete.
How does South Bay (15 mi S)'s climate compare?
South Bay (15 mi S) is warmer than 73 of the 106 places with their own NOAA record in Florida, and wetter than 74. Across the 7,247 U.S. stations with normals, its annual mean of 74.0°F is warmer than 98%.
In the Köppen classification computed from these normals, South Bay (15 mi S) 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.
Questions about South Bay (15 mi S)'s climate
What is the coldest month at South Bay (15 mi S)?
January, with a normal high of 76°F and a normal low of 52°F. The warmest is August (91°F by day, 74°F at night).
What is the rainiest month at South Bay (15 mi S)?
June, with 9.63 in of precipitation in a normal year; the driest is December with 2.11 in.
What plant hardiness zone is South Bay (15 mi S) in?
The USDA's 2023 map puts South Bay (15 mi S) in zone 10a in ZIP code 33493, the nearest ZIP area. By the same method at the station, the coldest night of a typical year reaches 33°F (15 years, 1991-2020): zone 10a.
Nearby and next
- Florida climateThe statewide normals and every place in the state
- Belle Glade, FL16 miles from this station, 74.3°F a year
- Big Cypress, FL24 miles from this station, 74.2°F a year
- Loxahatchee National Wildlife Refuge, FL26 miles from this station, 74.7°F a year
- Coral Springs, FL27 miles from this station, 76.2°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made