United States · 1991–2020 normal
Rio in
September.
Typical September weather in Rio: 23°C by day, 9.3°C at night, 85 mm of rain over 7.7 wet days. These are measured 1991–2020 station normals, not a forecast.
Typical high23°C
Typical low9.3°C
Rain85 mm
Wet days7.7
Comfort score 75 this month (August leads the year at 76). Daylight is calculated as 12 h 27 from latitude 43.45°.
The evidence behind this page
One month,
from the same station.
- Place identity
- GeoNames 5268977
- NOAA station
- USC00470308 · ARLINGTON
- Station distance
- 18.1 km from the place centre
- Coverage
- Strong coverage · 28 usable years
- Important limit
- Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.