Sluice Boxes State Park Weather Forecast
- 43
- 89
Rain Showers
- 43
- 61
Windy
- 39
- 60
Breezy
- 33
- 58
Snow Likely
- 31
- 43
Rain/Snow
- 34
- 50
Chance Rain
- 39
- 58
Chance Rain
Today 13 May Little Belt and Highwood Mountains
Breezy, warmer. Mostly sunny early in the afternoon then becoming mostly cloudy. Slight chance of rain Showers early in the Afternoon, then chance of Thunderstorms late in the afternoon. Some Thunderstorms may produce gusty Winds late in the afternoon. Highs 75 to 83. Southwest Winds 10 to 25 Mph with Gusts to around 45 Mph. Chance of precipitation 50 percent.
Tonight 13 May Little Belt and Highwood Mountains
Very windy. Colder. Rain Showers and chance of Thunderstorms early in the Evening, then mostly cloudy with chance of rain Showers late in the evening. Partly cloudy after midnight. Some Thunderstorms may be severe. Lows 34 to 42. West Winds 20 to 30 Mph with Gusts to around 65 Mph increasing to southwest 30 to 40 Mph with Gusts to around 75 Mph after midnight. Chance of precipitation near 100 percent.
Sluice Boxes State Park Temperature Statistics
May Temperature
Malmstrom Air Force Base (24.2 miles)
Lowest 6 May, 2026
26.7 °FAverage May
55.9 °FHighest 10 May, 2026
80.7 °F
Climate (2021–Present)
Malmstrom Air Force Base (24.2 miles)
Average Low 2021–2026
35.9 °FAverage 2021–2026
47.7 °FAverage High 2021–2026
59 °F