Groner Reservoir Weather Forecast
- 35
- 58
Mostly Sunny
- 36
- 61
Partly Sunny
- 38
- 61
Partly Sunny
- 43
- 65
Rain Showers
- 35
- 55
Rain Showers
- 30
- 47
Rain Showers Likely
Today 21 Oct Upper Weiser River
Areas of fog this morning. Sunny. Highs 54 to 61. Light Winds.
Tonight 21 Oct Upper Weiser River
Decreasing Clouds. Lows 34 to 39. Light Winds.
Groner Reservoir Temperature Statistics
October Temperature
Ontario Municipal Airport (36.7 miles)
Lowest 7 October, 2025
36 °FAverage October
55 °FHighest 10 October, 2025
80.1 °F
Climate (2020–Present)
Ontario Municipal Airport (36.7 miles)
Average Low 2020–2025
42.6 °FAverage 2020–2025
54.6 °FAverage High 2020–2025
67 °F