Groner Reservoir Weather Forecast
- 45
- 73
Mostly Sunny
- 43
- 73
Rain Showers
- 38
- 49
Rain Showers
- 35
- 54
Chance Rain Showers
- 35
- 57
Slight Chance Rain Showers
- 36
- 57
Partly Sunny
Today 20 Apr Upper Weiser River
Sunny. Highs 70 to 75. Southwest Winds around 10 Mph.
Tonight 20 Apr Upper Weiser River
Partly cloudy. Lows 43 to 48. Northeast Winds 10 to 15 Mph.
Groner Reservoir Temperature Statistics
April Temperature
Ontario Municipal Airport (36.7 miles)
Lowest 17 April, 2026
27.6 °FAverage April
50.4 °FHighest 6 April, 2026
76.6 °F
Climate (2021–Present)
Ontario Municipal Airport (36.7 miles)
Average Low 2021–2026
42.9 °FAverage 2021–2026
54.8 °FAverage High 2021–2026
67.2 °F