Helena Weather Forecast
- 61
- 86
Chance Rain Showers
- 59
- 80
Chance Thunderstorms
- 61
- 80
Chance Rain Showers
- 61
- 80
Chance Thunderstorms
- 57
- 80
Chance Rain Showers
- 55
- 77
Partly Sunny
Today 18 Sep Iowa
Partly sunny. A 20 percent chance of light Showers in the morning. Highs in the mid 80s. Southeast Winds up to 5 Mph.
Tonight 18 Sep Iowa
Partly cloudy with slight chance of light Showers and Thunderstorms through around Midnight, then mostly cloudy with chance of light Showers after midnight. Lows around 60. East Winds up to 10 Mph. Chance of precipitation 30 percent.
Helena Temperature Statistics
September Temperature
Lone Rock Tri-County Regional Airport (8.7 miles)
Lowest 7 September, 2025
37.9 °FAverage September
62.3 °FHighest 15 September, 2025
86 °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
60 °F