United States · 1991–2020 normal
Helena in
May.
Typical May weather in Helena: 26.4°C by day, 12.8°C at night, 111 mm of rain over 7.8 wet days. These are measured 1991–2020 station normals, not a forecast.
Typical high26.4°C
Typical low12.8°C
Rain111 mm
Wet days7.8
Comfort score 73 this month (September leads the year at 75). Daylight is calculated as 14 h 05 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.