Grindstone Reservoir Weather Forecast
- 32
- 57
Rain/Snow
- 28
- 43
Rain/Snow
- 27
- 49
Mostly Sunny
- 26
- 53
Mostly Sunny
- 29
- 53
Mostly Sunny
- 31
- 55
Partly Sunny
Today 21 Apr Ochoco-John Day Highlands
Mostly cloudy. A chance of rain in the Morning, then rain Showers likely and a chance of Thunderstorms in the afternoon. Highs in the mid 50s to lower 60s. Gusts up to 20 Mph in the afternoon. Chance of precipitation 70 percent. Rainfall Amounts less than a quarter of an Inch, except higher Amounts possible in Thunderstorms.
Tonight 21 Apr Ochoco-John Day Highlands
Rain likely in the Evening, then a chance of rain and high mountain snow overnight. Little or no high mountain snow accumulation. Lows in the lower to mid 30s. Northwest wind 5 to 15 Mph with Gusts to around 30 Mph overnight. Chance of precipitation 70 percent.
Grindstone Reservoir Temperature Statistics
April Temperature
Burns Municipal Airport (46 miles)
Lowest 17 April, 2026
15.7 °FAverage April
43.9 °FHighest 6 April, 2026
73.7 °F
Climate (2021–Present)
Burns Municipal Airport (46 miles)
Average Low 2021–2026
32.4 °FAverage 2021–2026
47.9 °FAverage High 2021–2026
62.6 °F