Weather in Saint Petersburg in September
September in Saint Petersburg is cool with average temperatures around 11.9°C (53.4°F). Moderate rainfall of 58mm spread over 12 days.
Data Note: Temperature values are 2001–2020 satellite/reanalysis grid averages from NASA POWER and may differ from airport station normals by a few degrees.
Temperature
High
15.1°C
59.2°F
Low
8.7°C
47.7°F
Precipitation
58 mm
2.3 inches
~12 rainy days
Conditions
Humidity
86%
Comparison to Adjacent Months
September is 4.6°C cooler than August, 33mm drier than August.
September is 6.9°C warmer than October.