United States · 1991–2020 normal
Helena in
September.
Typical September weather in Helena: 29.6°C by day, 15.5°C at night, 65 mm of rain over 4.6 wet days. These are measured 1991–2020 station normals, not a forecast.
Typical high29.6°C
Typical low15.5°C
Rain65 mm
Wet days4.6
Comfort score 75 this month, the highest of the year. Daylight is calculated as 12 h 22 from latitude 36.55°.
The evidence behind this page
One month,
from the same station.
- Place identity
- GeoNames 4538544
- NOAA station
- USC00344019 · HELENA 1 SSE
- Station distance
- 1 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.