St. Petersburg Climate by Month
St. Petersburg, Florida, United States
Hot summers and mild winters, with rain spread through the year.
Hot summers and mild winters, with rain spread through the year: that's St. Petersburg's climate in short. August is the warmest month, with highs around 91°F (33°C); January is the coolest at 70°F (21°C), and nights dip to 52°F (11°C). About 50 in (1259 mm) of rain falls in a typical year, with no clear rainy season.
- Warmest month
- 91°F(33°C)
- Average high, August
- Coldest nights
- 52°F(11°C)
- Average low, January
- Rain per year
- 50 in(1259 mm)
- No clear rainy season
- Humidity
- 71%
- Sunniest: May
Best and worst months in St. Petersburg
Best for weatherThe most comfortable weather comes in February, March and November, with highs around 76°F (24°C) and about 2.5 in (63 mm) of rain a month.
Least pleasantJuly and August are the least pleasant; August is the hottest, with highs of 91°F (33°C).
Comfort combines how close the afternoon high is to 75°F (24°C) with how much rain falls and how humid it is. See where the weather is best in November.
Temperature and rain through the year
Highs and lows (°F)
Average highAverage low
Rain (in per month)
St. Petersburg weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 70°F(21°C) | 52°F(11°C) | 2.2 in(56 mm) | 71% | 3.4 |
| FebFebruaryBest | 73°F(23°C) | 55°F(13°C) | 2.8 in(72 mm) | 70% | 4.0 |
| MarMarchBest | 77°F(25°C) | 59°F(15°C) | 2.7 in(69 mm) | 69% | 5.0 |
| AprApril | 82°F(28°C) | 64°F(18°C) | 1.5 in(38 mm) | 69% | 6.0 |
| MayMay | 87°F(31°C) | 70°F(21°C) | 3.0 in(77 mm) | 66% | 6.4 |
| JunJune | 90°F(32°C) | 74°F(24°C) | 7.4 in(188 mm) | 72% | 5.7 |
| JulJuly | 91°F(33°C) | 76°F(24°C) | 7.2 in(183 mm) | 75% | 5.7 |
| AugAugust | 91°F(33°C) | 76°F(25°C) | 8.5 in(217 mm) | 74% | 5.4 |
| SepSeptember | 89°F(32°C) | 74°F(24°C) | 7.2 in(182 mm) | 75% | 4.7 |
| OctOctober | 85°F(29°C) | 68°F(20°C) | 2.5 in(63 mm) | 70% | 4.2 |
| NovNovemberBest | 78°F(26°C) | 60°F(16°C) | 1.9 in(49 mm) | 70% | 3.6 |
| DecDecember | 73°F(23°C) | 55°F(13°C) | 2.6 in(65 mm) | 75% | 3.0 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
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