St. Petersburg, FL climate
St. Petersburg has warm winters and warm summers, with plenty of rain. A typical July afternoon reaches 91°, a January night drops to 53°, and snow is almost unheard of.
NOAA 1991-2020 climate normals Updated once a decadeRight about normal today. The forecast high is 88°, and a typical Oct 1 in St. Petersburg peaks around 87°.Live forecast: National Weather Service · Normal: NOAA 1991–2020
What a year in St. Petersburg feels like
Winter
Spring
Summer
Fall
St. Petersburg 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 | 70° | 53° | 2.9" | 0 | 7 | 0 | 55° – 67° |
| February | 73° | 56° | 2.2" | 0 | 6 | 0 | 55° – 72° |
| March | 76° | 60° | 2.7" | 0 | 7 | 0 | 61° – 74° |
| April | 81° | 65° | 2.5" | 0 | 5 | 0 | 68° – 78° |
| May | 86° | 71° | 2.8" | 0 | 5 | 0 | 74° – 82° |
| June | 90° | 75° | 7.3" | 0 | 12 | 0 | 81° – 85° |
| July | 91° | 76° | 8.4" | 0 | 15 | 0 | 82° – 86° |
| August | 90° | 77° | 9.3" | 0 | 15 | 0 | 82° – 85° |
| September | 89° | 75° | 6.5" | 0 | 14 | 0 | 80° – 84° |
| October | 84° | 70° | 2.6" | 0 | 6 | 0 | 73° – 81° |
| November | 78° | 61° | 1.7" | 0 | 4 | 0 | 65° – 76° |
| December | 73° | 56° | 2.5" | 0 | 6 | 0 | 54° – 73° |
| Year | 82° | 66° | 51.6" | 0.0" | 101 | 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 St. Petersburg
St. Petersburg gets 52 inches of rain and melted snow a year. August is the wettest month and November the driest. Rain or snow falls on about 101 days a year.
A year-round growing season
Heating and cooling a home in St. Petersburg
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In St. Petersburg, 9% of that work is heating and 91% 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.
St. Petersburg and its neighbors
St. Petersburg borders 12 towns with climate data. January nights across them vary by 2.0°. Lealman has the coldest January nights (51°) and Tierra Verde the hottest July afternoons (91°). St. Petersburg’s January low is 53° and its July high 91°.
Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value.
How St. Petersburg 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 St. Petersburg averaged 1.4° warmer than the 1900s. The biggest change is in December (+2.0°). The shift is larger than in 65% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at St. Petersburg’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 54° to 73°. August is the most reliable, staying within 3°.
Common questions about St. Petersburg’s climate
What is the coldest month in St. Petersburg?
January, with a typical high of 70° and a low of 53°.
What is the hottest month in St. Petersburg?
July, with a typical high of 91° and a low of 76°. About 75 days a year reach 90°.
How much snow does St. Petersburg get?
Almost none. A normal year brings 0.0 inches.
When is the first frost in St. Petersburg?
Frost is uncommon. Only 11% of years see a night at 32° or below.
What is the rainiest month in St. Petersburg?
August, with 9.3 inches of rain and melted snow. The year totals 52 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for St. Petersburg itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at St Petersburg, FL (1 mi) away. Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000.