St. Petersburg Weather in September
In September, St. Petersburg averages a high of 15°C (59°F) and a low of 7°C (45°F), based on 54 years of historical weather data from ST. PETERSBURG.
15°C
Average high
59°F
7°C
Average low
45°F
31°C
Record high
87°F · 1992
-6°C
Record low
21°F · 1973
What to Expect in St. Petersburg in September
Typical September days in St. Petersburg reach 15°C (59°F) during the afternoon and cool to around 7°C (45°F) overnight. On average, measurable rain falls on about 47% of days this month. Over the past 54 years, September temperatures in St. Petersburg have ranged from a record high of 31°C (1992) down to a record low of -6°C (1973).
For a day-by-day look or other months, see the full St. Petersburg weather history.