United States · 1991–2020 normal
Irmo in
September.
Typical September weather in Irmo: 30°C by day, 18.7°C at night, 99 mm of rain over 6.3 wet days. These are measured 1991–2020 station normals, not a forecast.
Typical high30°C
Typical low18.7°C
Rain99 mm
Wet days6.3
Comfort score 62 this month (October leads the year at 83). Daylight is calculated as 12 h 21 from latitude 34.09°.
The evidence behind this page
One month,
from the same station.
- Place identity
- GeoNames 4583057
- NOAA station
- USW00013883 · COLUMBIA
- Station distance
- 16.4 km from the place centre
- Coverage
- Strong coverage · 30 usable years
- Important limit
- Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.