St Petersburg, FL Climate: Temperature & Rain by Month
Pulled from NOAA NCEI 1991–2020 normals →: climate measurements used in PlainClimate's documented score
30-year climate normals (1991-2020) from St Petersburg's primary NOAA station, ST PETERSBURG INTL AP - 3 stations mapped to the area.
The climate verdict for St Petersburg
Warm-season cooling demand defines St Petersburg, Florida, running at more than twice its heating total. The NOAA normal records an annual average of 74°F. August is the warmest month at 84°F and January the coldest at 62°F.
- 74°F
- average temperature, NOAA 1991-2020 normal
- 53.6"
- annual precipitation
St Petersburg: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USW00012873 · St Petersburg, FL 74°F mean · 53.6" precip
TEMP-HOT · RANK-WARM · PHOTO-FINISH · PRCP-WET · SWING-NARROW · COMF-UNK · LOAD-COOL · STN-MULTI · BOOK-FULL
- TEMP-HOT 74°F
- RANK-WARM #6,724
- PHOTO-FINISH ≈ Mtn Lake
- PRCP-WET 53.6"
- SWING-NARROW 22°F
- COMF-UNK Comfort n/a
- LOAD-COOL 3,701 CDD
- STN-MULTI USW00012873
- BOOK-FULL 5/6 fields
Nearest mean-temperature peer: Mtn Lake, FL (+ 0 °F mean)
Instrument codes from this station's NOAA 1991–2020 normals, mean temperature, corpus warmth rank, photo-finish peer station, precipitation band, seasonal swing, comfort composite, degree-day load, and field book, not a livability rating.
Mean-temperature neighbourhood
Nationwide NOAA normal poles and nearest peers, not a reprint of every FL station list.
- St Petersburg (this station) 74°F
- Cold Orlando Executi…, FL 74°F
- Hot Clewiston, FL 74°F
- Near Mtn Lake, FL 74°F
- Near Lakeland, FL 74°F
St Petersburg sits in Florida, the #1 hottest U.S. state at 72.6°F statewide annual average - see all 50 hottest states ranked by NOAA normals
Climate Living Index · St Petersburg
St Petersburg: 59/100 · grade C
St Petersburg publishes 4 of 6 Living Index dimensions (NOAA annual/seasonal normals · NOAA daily multivariate normals · NOAA hourly normals); 2 missing weights rescale to 100.
PlainClimate-derived for St Petersburg, not an official NOAA rating. Breakpoints and limits.
| Dimension | Station value | Score |
|---|---|---|
| Normal heat + freeze calendar | 60 calendar days | 89/100 · A |
| Annual temperature balance | 73.9°F · 6.4° from 67.5°F | 80/100 · B |
| Precipitation balance | 53.6 in · 18.6 from 35 in | 33/100 · F |
| Summer moisture balance | 74.2°F mean dew point | 1/100 · F |
St Petersburg · 2026-08-04 · NOAA NCEI Climate Normals · method .
St Petersburg is a temperate Köppen climate: Cfa
Coldest-month mean 61.6°F and warmest-month mean 83.5°F place this station in temperate, no dry season, hot summer climates (Cfa). Class Cfa is the Peel et al. (2007) label for this station's monthly mean temperature and precipitation normals: temperate, specifically temperate, no dry season, hot summer.
- Köppen code
- Cfa
- Group
- Temperate
- Warmest month
- 83.5°F
- Coldest month
- 61.6°F
Source: official public datasets monthly normals (1991–2020) at the city’s primary station. This is a station classification, not a mapped regional consensus.
National standing · cooling-led station
Where St Petersburg sits across the climate record
Three NOAA fields for St Petersburg's primary station, temperature, precipitation, and seasonal swing, are ranked against every station-mapped normal that carries the same field.
- Annual temperature
- Top 2% warmest
- Among 6,861 stations, St Petersburg sits in the warmer third of annual means.
- Annual precipitation
- Top 12% wettest
- St Petersburg's annual total ranks in the wetter third of 6,352 measured normals.
- Seasonal temperature swing
- Narrower than 96%
- Warmest-to-coldest month gap for St Petersburg is compact versus 6,861 complete station-years.
Monthly Temperatures
Average daily high and low temperatures by month
| Month | Avg High | Avg Low | Mean | Precip | Snow | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|---|
| January | 71°F (21°C) | 53°F (11°C) | 62°F (16°C) | 2.6" | N/A | 0.3 | 0.0 |
| February | 73°F (23°C) | 55°F (13°C) | 64°F (18°C) | 2.4" | N/A | 0.0 | 0.0 |
| March | 77°F (25°C) | 59°F (15°C) | 68°F (20°C) | 2.4" | N/A | 0.0 | 0.1 |
| April | 82°F (28°C) | 64°F (18°C) | 73°F (23°C) | 2.6" | N/A | 0.0 | 0.8 |
| May | 87°F (31°C) | 70°F (21°C) | 78°F (26°C) | 2.7" | N/A | 0.0 | 8.6 |
| June | 90°F (32°C) | 75°F (24°C) | 82°F (28°C) | 8.9" | N/A | 0.0 | 18.8 |
| July | 90°F (32°C) | 76°F (24°C) | 83°F (28°C) | 9.7" | N/A | 0.0 | 21.1 |
| August | 91°F (33°C) | 76°F (25°C) | 84°F (29°C) | 8.8" | N/A | 0.0 | 23.5 |
| September | 89°F (32°C) | 75°F (24°C) | 82°F (28°C) | 6.4" | N/A | 0.0 | 16.7 |
| October | 84°F (29°C) | 70°F (21°C) | 77°F (25°C) | 2.5" | N/A | 0.0 | 4.4 |
| November | 77°F (25°C) | 61°F (16°C) | 69°F (21°C) | 1.6" | N/A | 0.0 | 0.0 |
| December | 73°F (23°C) | 56°F (13°C) | 64°F (18°C) | 2.9" | N/A | 0.1 | 0.0 |
The year, day by day
The year in St Petersburg runs from a mild 52°F around January 14 to 91°F at the peak near August 1, and the normal low never reaches freezing on any date in the record.
When the heat sits
Normal highs reach 90°F from July 4 through September 1, covering 60 dates. The broader mild season, normal highs of 70°F or more, runs January 1 to December 31.
This counts calendar dates whose 1991–2020 normal high reaches 90°F. It is a smaller number than the 90°F+ day counts in the monthly table above, which measure how often the threshold was actually crossed in a typical year. A date can average 88°F and still exceed 90°F in half of all years.
No freezing date
Not one calendar date in the 1991–2020 record carries a normal low at or below 32°F. The coldest normal low of the year is 52°F around January 14.
Where the wet dates fall
The likeliest wet date is July 21, when 59% of years recorded at least a hundredth of an inch. The driest is April 27 at 17%. Summed across the calendar, that is about 119 wet dates a year.
The widest day
January 25 carries the biggest normal gap between afternoon and dawn, 18°F between the normal high and the normal low.
Look up any date
Any date's 1991–2020 normal for St Petersburg.
Where St Petersburg Stands Nationally
Among the steadiest day-night climates ranked: even the widest normal daily swing holds to roughly 18°F.
The normal water year runs well above the national norm at roughly 54 inches.
St Petersburg earns 2 nationally notable standings (outer quintiles) against 6,860 NOAA 1991–2020 normals stations; only those extremes render.
Monthly Precipitation
Average monthly rainfall and snowfall
9.7 days with precipitation
7.5 days with precipitation
6.1 days with precipitation
5.5 days with precipitation
6.4 days with precipitation
15.0 days with precipitation
18.3 days with precipitation
17.4 days with precipitation
13.2 days with precipitation
6.4 days with precipitation
5.9 days with precipitation
7.5 days with precipitation
St Petersburg runs a summer-peaked wet season
51% of St Petersburg's yearly precipitation falls in June, July and August alone, against the 25% an evenly spread year would give those three months. The wettest month is July at 9.7", on an unusually narrow 21.9°F seasonal spread. Warm-season convection and, across the Southwest, the North American monsoon produce this shape: rain arrives in short heavy bursts during the hottest part of the year rather than as long cool-season soaking.
- Wettest three months: July, June, August, taking 51% of the annual total between them.
- Driest month: November at 1.6".
- Winter share: 15% falls in December, January and February.
Shares are computed from this station's own 1991-2020 monthly precipitation normals. A summer-peaked label means the June-August share reaches 35%; it describes timing across an average year, not any single season, and says nothing about how heavy an individual storm can be.
When it rains in St Petersburg, it arrives in quantity
53.6" of precipitation falls across only about 119 wet days here, averaging 0.45 inches each. Fewer days carry more water: the year's total is delivered in comparatively heavy events rather than persistent damp.
- Days with measurable precipitation
- about 119 a year, 33% of all days
- Average depth per wet day
- 0.45 inches
- Most wet days
- July, about 18
- Fewest wet days
- April, about 6
A wet day is one recording at least 0.01 inches. These are 1991-2020 normals: they describe an average year, and a per-day average is not a forecast of any individual storm.
Frost Dates & Growing Season
First Fall Freeze
January 14
50% probability date
Last Spring Freeze
January 17
50% probability date
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
447
Higher = more heating needed
Cooling Degree Days
3,701
Higher = more cooling needed
Warmest Month
August
Coldest Month
January
Humidity & Wind
Monthly averages from hourly observations
| Month | Humidity | Wind (mph) | Clear Sky % | Overcast % |
|---|---|---|---|---|
| January | 73% | 9.1 | 52% | 19% |
| February | 71% | 9.8 | 51% | 16% |
| March | 70% | 9.4 | 59% | 9% |
| April | 69% | 9.2 | 58% | 6% |
| May | 73% | 8.3 | 50% | 7% |
| June | 77% | 7.1 | 46% | 8% |
| July | 77% | 6.6 | 49% | 5% |
| August | 78% | 7.5 | 46% | 6% |
| September | 77% | 8.6 | 47% | 10% |
| October | 72% | 8.9 | 56% | 10% |
| November | 74% | 8.4 | 58% | 12% |
| December | 76% | 8.7 | 51% | 17% |
Nationwide similar cities
Other rankable U.S. places outside FL closest to St Petersburg on two NOAA annual-normal axes (mean temperature and annual precipitation). Chip rows use distinct link sets.
Closest by average temperature
Nearest out-of-state peers by annual mean temperature (74°F here).
- Del Rio, TX 74°F · 0.0°F off
- Ehrenberg, AZ 74°F · 0.0°F off
- Hebbronville, TX 74°F · 0.0°F off
- Kilauea, HI 74°F · 0.0°F off
Closest by annual precipitation
Nearest out-of-state peers by annual precipitation (53.6" here), excluding temperature-peer places.
- Alamo, TN 53.6" · 0.0" off
- Yemassee, SC 53.6" · 0.0" off
- Mahanoy City, PA 53.6" · 0.0" off
- Pine Bluff, AR 53.6" · 0.0" off
Data-derived climate profile
How St Petersburg's climate pattern fits together
cooling led · wet · low swing
Warm-season load persists through a relatively even calendar in St Petersburg. Cooling totals 3,701 degree days, more than double the 447 heating measure, and the 21.9°F seasonal range is compact rather than sharply divided.
Warm-season demand is paired with a wet annual normal: 53.6 inches of precipitation at St Petersburg. Snowfall is not added to the interpretation because its annual value is missing. The month-by-month bars distinguish a concentrated wet season from moisture spread across the calendar.
St Petersburg's 21.9°F seasonal spread is compact even though precipitation is abundant. August and January mark the typical warm and cold ends of the calendar. The annual average is 74°F. Temperature is relatively steady; the monthly rows show how rain and snow observations vary across the calendar.
A frost-free growing-season length is not available for St Petersburg. That missing field is kept separate from the observed temperature and precipitation record rather than filled from a regional estimate.
These labels group NOAA 1991-2020 normals from St Petersburg's primary station, so the summer figures are a thirty-year average rather than a ceiling: individual years have run hotter and will again. For St Petersburg that means a descriptive range only — not an official NOAA classification and not a prediction for next summer.
Questions about St Petersburg's climate
How much rain does St Petersburg get? ▼
How many days above 90°F does St Petersburg get? ▼
How much energy does heating and cooling require in St Petersburg? ▼
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from St Petersburg's primary station: ST PETERSBURG INTL AP (USW00012873). 3 NOAA stations are mapped to the St Petersburg area; the primary station's record is used for consistency. For informational purposes only.
Place identity: U.S. Census Bureau 2024 Gazetteer places. The 2024 Census Gazetteer identifies the exact name-and-state match as an incorporated place (GEOID 1263000). Match rule for St Petersburg: exact normalized name + state only, no fuzzy expansion, so nearby differently spelled facilities stay unmatched.
On this page every temperature, precipitation, and derived score for St Petersburg comes from its primary NOAA station record. No figure on this page is typed in by an editor - each value is rendered from NOAA 1991-2020 U.S. Climate Normals. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 1991–2020 normals.