Helena Weather Forecast
- 59
- 86
Partly Sunny
- 60
- 86
Partly Sunny
- 59
- 85
Slight Chance Thunderstorms
- 59
- 83
Chance Thunderstorms
- 56
- 75
Chance Thunderstorms
- 55
- 72
Chance Rain Showers
Today 15 Sep Iowa
Mostly sunny. Highs in the mid 80s. Southeast Winds up to 10 Mph.
Tonight 15 Sep Iowa
Mostly clear. Lows in the lower 60s. Southeast Winds up to 10 Mph.
Helena Temperature Statistics
September Temperature
Lone Rock Tri-County Regional Airport (8.7 miles)
Lowest 7 September, 2025
37.9 °FAverage September
59.7 °FHighest 12 September, 2025
84 °F
Climate (2020–Present)
Lone Rock Tri-County Regional Airport (8.7 miles)
Average Low 2020–2025
38.6 °FAverage 2020–2025
49.2 °FAverage High 2020–2025
59.9 °F