Nisland Weather Forecast
- 53
- 85
Thunderstorms
- 55
- 75
Chance Rain Showers
- 51
- 69
Chance Thunderstorms
- 48
- 67
Chance Rain Showers
- 48
- 70
Partly Sunny
- 50
- 76
Mostly Sunny
Today 15 Sep Butte
Mostly sunny this Morning, then partly cloudy with isolated Showers and Thunderstorms this afternoon. Some Thunderstorms may produce gusty Winds this afternoon. Highs in the lower 80s. Southwest Winds 5 to 10 Mph, becoming northwest this afternoon. Chance of rain 20 percent.
Tonight 15 Sep Butte
Partly cloudy. Scattered Showers and Thunderstorms in the Evening, then a slight chance of Showers and Thunderstorms after midnight. Some Thunderstorms may produce gusty Winds in the evening. Lows in the lower 50s. Northwest Winds 10 to 15 Mph. Chance of rain 40 percent.
Nisland Temperature Statistics
September Temperature
Spearfish / Clyde Ice (16.8 miles)
Lowest 5 September, 2025
39.2 °FAverage September
64.2 °FHighest 11 September, 2025
91.4 °F
Climate (2020–Present)
Spearfish / Clyde Ice (16.8 miles)
Average Low 2020–2025
36.1 °FAverage 2020–2025
47.4 °FAverage High 2020–2025
58.2 °F