St Regis Weather Forecast
- 39
- 62
Mostly Cloudy
- 43
- 69
Mostly Cloudy
- 43
- 75
Mostly Sunny
- 47
- 79
Slight Chance Rain
- 45
- 77
Slight Chance Thunderstorms
- 44
- 77
Mostly Sunny
Today 14 Sep Lower Clark Fork Region
Rain likely early in the Morning, then Areas of rain in the late morning and early afternoon. Chance of rain 70 percent. Highs in the mid 50s to lower 60s. West Winds to 15 Mph in the morning.
Tonight 14 Sep Lower Clark Fork Region
Mostly cloudy until early morning then becoming partly cloudy. Patchy fog in the late evening and early morning. Areas of fog late in the night. Lows in the mid 30s to lower 40s.
St Regis Temperature Statistics
September Temperature
Mullan Pass, Mullan Pass Vor (28.6 miles)
Lowest 4 September, 2026
37.9 °FAverage September
47.9 °FHighest 1 September, 2026
71.1 °F
Climate (2021–2026)
Mullan Pass, Mullan Pass Vor (28.6 miles)
Average Low 2021–2026
33.7 °FAverage 2021–2026
39.7 °FAverage High 2021–2026
46 °F