United States · 1991–2020 normal
Petersburg in
September.
Typical September weather in Petersburg: 24.5°C by day, 12°C at night, 72 mm of rain over 7.5 wet days. These are measured 1991–2020 station normals, not a forecast.
Typical high24.5°C
Typical low12°C
Rain72 mm
Wet days7.5
Comfort score 84 this month, the highest of the year. Daylight is calculated as 12 h 26 from latitude 41.90°. Open-water sea temperature is 21.1°C (28 km from the place centre).
Event window
Warm sea in September
The nearest open-water NOAA OISST 1991–2020 cell averages 21.1°C in September. A sheltered bay can run warmer than that open-water cell.
The evidence behind this page
One month,
from the same station.
- Place identity
- GeoNames 5005450
- NOAA station
- USC00202308 · DUNDEE
- Station distance
- 8.1 km from the place centre
- Coverage
- Good coverage · 20 usable years
- Important limit
- Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.