Hump Lake Weather Forecast
- 37
- 45
Patchy Smoke
- 44
- 59
Mostly Sunny
- 46
- 62
Sunny
- 47
- 64
Mostly Sunny
- 49
- 64
Partly Sunny
- 47
- 63
Chance Rain Showers
Today 15 Sep Southern Clearwater Mountains
Patchy fog in the morning. Patchy smoke late in the afternoon. Rain Showers likely early in the morning. Chance of rain Showers in the late morning and afternoon. Slight chance of Thunderstorms early in the afternoon. Chance of precipitation 70 percent. Highs 53 to 66.
Tonight 15 Sep Southern Clearwater Mountains
Mostly clear. Patchy fog through the night. Patchy frost after midnight. Lows 32 to 47.
Hump Lake Temperature Statistics
September Temperature
Grangeville - Idaho County Airport (31.1 miles)
Lowest 11 September, 2025
46.4 °FAverage September
67.4 °FHighest 2 September, 2025
98.6 °F
Climate (2020–Present)
Grangeville - Idaho County Airport (31.1 miles)
Average Low 2020–2025
36.6 °FAverage 2020–2025
47 °FAverage High 2020–2025
57.6 °F