St. Petersburg, Florida climate: Normal weather by month, frost dates and records
St. Petersburg's normal year runs from 53°F January nights to 91°F August afternoons, with 53.6 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, 1,362 mm of precipitation a year.
- NOAA stationSt Petersburg International Airport
- Station IDUSW00012873
- Location27.91°N 82.69°W
- Elevation11 ft (3 m)
- From the center11 miles
- Population267,102
On October 23, the normal high in St. Petersburg is 83°F and the normal low 68°F, and the chance of measurable rain or snow is 20%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for St. Petersburg.
- Jan 71° 53°
- Feb 73° 55°
- Mar 77° 59°
- Apr 82° 64°
- May 87° 70°
- Jun 90° 75°
- Jul 90° 76°
- Aug 91° 76°
- Sep 89° 75°
- Oct 84° 70°
- Nov 77° 61°
- Dec 73° 56°
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 St. Petersburg each month?
August is the warmest month, with normal highs of 91°F; January the coldest, with normal lows of 53°F. The most precipitation falls in July (9.73 in), the least in November (1.64 in).
Each month has its own page with the day-by-day normals, the month's records and its recent years:
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 71°F | 53°F | 61.6°F | 2.62 | 10 | <1 | <1 | 10 h 30 min |
| February | 73°F | 55°F | 64.2°F | 2.38 | 8 | <1 | <1 | 11 h 10 min |
| March | 77°F | 59°F | 68.1°F | 2.43 | 6 | <1 | <1 | 12 h |
| April | 82°F | 64°F | 73.0°F | 2.57 | 6 | 1 | <1 | 12 h 50 min |
| May | 87°F | 70°F | 78.4°F | 2.73 | 6 | 9 | <1 | 13 h 30 min |
| June | 90°F | 75°F | 82.1°F | 8.86 | 15 | 19 | <1 | 13 h 50 min |
| July | 90°F | 76°F | 83.1°F | 9.73 | 18 | 21 | <1 | 13 h 40 min |
| August | 91°F | 76°F | 83.5°F | 8.83 | 17 | 24 | <1 | 13 h 10 min |
| September | 89°F | 75°F | 82.1°F | 6.40 | 13 | 17 | <1 | 12 h 20 min |
| October | 84°F | 70°F | 76.9°F | 2.49 | 6 | 4 | <1 | 11 h 30 min |
| November | 77°F | 61°F | 69.0°F | 1.64 | 6 | <1 | <1 | 10 h 50 min |
| December | 73°F | 56°F | 64.4°F | 2.94 | 8 | <1 | <1 | 10 h 20 min |
| Year (annual) | 82°F | 66°F | 73.9°F | 53.62 | 119 | 94 | <1 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 21°C | 11°C | 16.4°C | 67 mm |
| February | 23°C | 13°C | 17.9°C | 60 mm |
| March | 25°C | 15°C | 20.1°C | 62 mm |
| April | 28°C | 18°C | 22.8°C | 65 mm |
| May | 31°C | 21°C | 25.8°C | 69 mm |
| June | 32°C | 24°C | 27.8°C | 225 mm |
| July | 32°C | 24°C | 28.4°C | 247 mm |
| August | 33°C | 25°C | 28.6°C | 224 mm |
| September | 32°C | 24°C | 27.8°C | 163 mm |
| October | 29°C | 21°C | 24.9°C | 63 mm |
| November | 25°C | 16°C | 20.6°C | 42 mm |
| December | 23°C | 13°C | 18.0°C | 75 mm |
Source: NOAA NCEI 1991-2020 monthly normals, station USW00012873; 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 St. Petersburg?
Normal highs sit between 65°F and 85°F in January, February, March, April, October, November and December. Of those, April has the fewest days with rain (6).
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 USW00012873.
When is the last frost in St. Petersburg?
A night at 32°F or colder comes in only 23% of years in St. Petersburg (NOAA). NOAA's median date of the last spring frost is January 17 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 St. Petersburg in zones 10a to 10b across its 14 ZIP code areas (10b in 33702, the largest). By the map's own method, the average of each year's coldest night over 1991-2020, St. Petersburg's NOAA station is in zone 10a: the coldest night of a typical year reaches 35°F (20 complete years); the map interpolates between stations and terrain, so the station and the ZIP area can differ by half a zone.
Frost dates for every NOAA station in Florida · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USW00012873; 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.
What hardiness zone is each St. Petersburg ZIP code in?
The USDA's 2023 map gives each ZIP code area one zone. St. Petersburg's 14 ZIP code areas run from zone 10a to 10b: 3 in 10a and 11 in 10b. Each ZIP's frost dates are in the frost tool.
| ZIP code | Zone | Land in St. Petersburg |
|---|---|---|
| 33701 | 10b | 6.9 km² |
| 33702 | 10b | 20.9 km² |
| 33703 | 10b | 13.0 km² |
| 33704 | 10b | 8.9 km² |
| 33705 | 10b | 14.5 km² |
| 33707 | 10b | 4.5 km² |
| 33710 | 10b | 20.6 km² |
| 33711 | 10b | 11.6 km² |
| 33712 | 10b | 16.6 km² |
| 33713 | 10b | 16.9 km² |
| 33714 | 10a | 2.3 km² |
| 33715 | 10b | 2.4 km² |
| 33716 | 10a | 15.9 km² |
| 33762 | 10a | 3.2 km² |
Source: USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026; ZIP areas in the place: Census Bureau 2020 ZCTA-to-place relationship file. A ZIP area counts when at least a tenth of its land (and 0.5 km²) lies in the place.
How hot and how cold does it get in St. Petersburg?
In a normal year in St. Petersburg, 94 days a year reach 90°F, nights almost never fall to freezing and 119 days bring measurable precipitation.
- Days at 90°F or more
- 94a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- fewer than 1a normal year
- Days that stay below freezing
- fewer than 1high of 32°F or less
- Days with 0.01 inch of precipitation
- 119a normal year
The highest temperature in this station's record (since 1998) is 99°F, on June 19, 2000; the lowest is 28°F, on January 24, 2003.
The wettest calendar year on that record is 2004, with 73.04 in.
Source: NOAA NCEI 1991-2020 annual normals, station USW00012873; records: ACIS (NOAA Regional Climate Centers), station USW00012873. Records use complete months only; a month missing more than three days is left out.
How humid and windy is St. Petersburg, and how clear are its skies?
The summer (June-August) dew point averages 74°F. The muggiest month is July, with an average dew point of 74°F, above the 65°F at which most people call the air sticky; the driest air comes in January (53°F). February is the windiest month (9.8 mph on average), and April has the most clear or nearly clear hours (75%).
| Month | Dew point | Humidity | Afternoon humidity | Wind | Clear or few clouds | Overcast |
|---|---|---|---|---|---|---|
| January | 53°F | 73% | 55% | 9.1 mph | 63% | 19% |
| February | 56°F | 71% | 53% | 9.8 mph | 64% | 16% |
| March | 60°F | 70% | 51% | 9.4 mph | 73% | 9% |
| April | 64°F | 69% | 51% | 9.2 mph | 75% | 6% |
| May | 70°F | 73% | 56% | 8.3 mph | 69% | 7% |
| June | 74°F | 77% | 62% | 7.1 mph | 65% | 8% |
| July | 74°F | 77% | 64% | 6.6 mph | 69% | 5% |
| August | 74°F | 78% | 63% | 7.5 mph | 66% | 6% |
| September | 71°F | 77% | 61% | 8.6 mph | 64% | 10% |
| October | 63°F | 72% | 55% | 8.9 mph | 71% | 10% |
| November | 57°F | 74% | 56% | 8.4 mph | 70% | 12% |
| December | 54°F | 76% | 60% | 8.7 mph | 63% | 17% |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00012873. Monthly averages of all hours; afternoon humidity at 3 p.m. local standard time; sky as the share of hours NOAA's observations rate clear or few clouds (a dash where NOAA publishes no sky value).
How sunny is St. Petersburg?
Over a year 83% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around St. Petersburg, 5.1 kWh per square metre a day. May is the sunniest month (88%) and July the cloudiest (79%). Among the 459 U.S. places of 50,000 or more, that ranks tied 93rd (with 5 others) in sunshine.
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 81% | 3.6 |
| February | 81% | 4.3 |
| March | 85% | 5.5 |
| April | 87% | 6.4 |
| May | 88% | 6.8 |
| June | 81% | 6.2 |
| July | 79% | 5.9 |
| August | 80% | 5.6 |
| September | 81% | 5.2 |
| October | 86% | 4.7 |
| November | 84% | 3.9 |
| December | 81% | 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 much heating and cooling does St. Petersburg need?
A normal year in St. Petersburg brings 447 heating degree days, 92% fewer than the median U.S. place (5,373), and 3,701 cooling degree days, 4.1 times the median (908). No month reaches 300 heating degree days. For gardens and crops, NOAA counts 8,745 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 159 | 53 |
| February | 93 | 71 |
| March | 42 | 138 |
| April | 7 | 247 |
| May | 0 | 417 |
| June | 0 | 513 |
| July | 0 | 561 |
| August | 0 | 572 |
| September | 0 | 511 |
| October | 3 | 373 |
| November | 33 | 155 |
| December | 109 | 91 |
| Year (annual) | 447 | 3,701 |
Source: NOAA NCEI 1991-2020 monthly normals, station USW00012873. 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 St. Petersburg been warmer than normal lately?
2025 averaged 75.7°F, 1.8°F above the 1991-2020 normal of 73.9°F. 3 of the 3 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 75.5°F | +1.6°F | 50.16 |
| 2023 | 75.8°F | +1.9°F | 30.62 |
| 2025 | 75.7°F | +1.8°F | 35.63 |
Source: observed years: ACIS, station USW00012873. A year counts only with all twelve months complete.
How does St. Petersburg's climate compare?
St. Petersburg is warmer than 70 of the other 105 places with their own NOAA record in Florida, and wetter than 53. Across the 7,247 U.S. stations with normals, its annual mean of 73.9°F is warmer than 98%.
In the Köppen classification computed from these normals, St. Petersburg 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 St. Petersburg share this climate record?
31 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.
- Clearwater, FLalso near: Tarpon Springs (12 mi, 72.9°F a year); Tampa (14 mi, 74.5°F a year)116,811 people · 7 mi NW
- Largo, FLalso near: Tampa (15 mi, 74.5°F a year); Tarpon Springs (17 mi, 72.9°F a year)82,337 people · 5 mi W
- Pinellas Park, FLalso near: Tampa (12 mi, 74.5°F a year); Tarpon Springs (20 mi, 72.9°F a year)53,503 people · 4 mi S
- Lealman, FL21,026 people · 6 mi S
- Seminole, FL19,395 people · 8 mi SW
- Safety Harbor, FL16,972 people · 7 mi N
- West Lealman, FL15,560 people · 7 mi SW
- Gulfport, FL11,645 people · 11 mi S
- Bardmoor, FL10,095 people · 6 mi SW
- St. Pete Beach, FL8,730 people · 14 mi S
- Treasure Island, FL6,524 people · 11 mi SW
- South Pasadena, FL5,280 people · 11 mi S
- Kenneth City, FL4,966 people · 7 mi S
- Belleair, FL4,614 people · 8 mi W
- South Highpoint, FL4,129 people · 1 mi W
- Tierra Verde, FL4,051 people · 17 mi S
- Madeira Beach, FL4,014 people · 10 mi SW
- Indian Rocks Beach, FL3,637 people · 10 mi W
- Feather Sound, FL3,309 people · 0 mi SW
- Ridgecrest, FL3,288 people · 7 mi W
- Harbor Bluffs, FL3,020 people · 9 mi W
- Bay Pines, FL2,700 people · 9 mi SW
- Greenbriar, FL2,344 people · 8 mi NW
- Belleair Bluffs, FL2,284 people · 8 mi W
- Redington Shores, FL2,167 people · 10 mi SW
- Bear Creek, FL2,091 people · 11 mi S
- Belleair Beach, FL1,615 people · 9 mi W
- North Redington Beach, FL1,478 people · 10 mi SW
- Redington Beach, FL1,383 people · 10 mi SW
- Indian Shores, FL1,190 people · 10 mi SW
- Belleair Shore, FL76 people · 10 mi W
Source: Census Bureau 2024 Gazetteer (place centers) and Vintage 2024 population estimates. Distance and direction from the station to each place's center.
What do St. Petersburg's other NOAA stations record?
2 more NOAA stations keep 1991-2020 normals in or near St. Petersburg. This page uses St Petersburg International Airport; the others differ by site and elevation:
| Station | From the center | Elevation | Year | Jan low | Jul high | Precip. | Snow | Last frost |
|---|---|---|---|---|---|---|---|---|
| St Petersburg Airport USW00092806 | 1 mi E | 8 ft | 74.7°F | 55°F | 90°F | 46.6 | – | – |
| St Petersburg station USC00087886 | 1 mi E | 8 ft | 74.5°F | 54°F | 91°F | 52.5 | 0 | January 17 |
Source: NOAA NCEI 1991-2020 normals for each station. Last frost: the median last spring date of 32°F.
Questions about St. Petersburg's climate
What is the coldest month in St. Petersburg?
January, with a normal high of 71°F and a normal low of 53°F. The warmest is August (91°F by day, 76°F at night).
Does it snow in St. Petersburg?
Rarely. NOAA publishes no 1991-2020 snowfall normal for St. Petersburg's NOAA station; St. Petersburg's own co-op station St Petersburg station records 0 inches of snow in a normal year.
What is the rainiest month in St. Petersburg?
July, with 9.73 in of precipitation in a normal year; the driest is November with 1.64 in.
What plant hardiness zone is St. Petersburg in?
The USDA's 2023 map puts St. Petersburg in zones 10a to 10b across its 14 ZIP code areas (10b in 33702, the largest). By the same method at St. Petersburg's NOAA station, the coldest night of a typical year reaches 35°F (20 years, 1991-2020): zone 10a.
Nearby and next
- St. Petersburg in OctoberThis month day by day, its records and recent years
- Florida climateThe statewide normals and every place in the state
- Tampa, FL10 miles from this station, 74.5°F a year
- Tarpon Springs, FL17 miles from this station, 72.9°F a year
- Ruskin, FL22 miles from this station, 73.1°F a year
- Parrish, FL29 miles from this station, 72.8°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made