Threemile Reservoir Weather Forecast
- 28
- 40
Gradual Clearing
- 33
- 49
Partly Sunny
- 40
- 52
Rain
- 31
- 52
Rain Likely
- 31
- 50
Slight Chance Rain/Snow
- 34
- 56
Mostly Cloudy
Today 21 Feb Harney County
Mostly cloudy. Highs 38 to 43. Southeast Winds 10 to 15 Mph with Gusts to 25 Mph.
Tonight 21 Feb Harney County
Decreasing Clouds. Lows 22 to 28. East Winds 10 to 15 Mph.
Threemile Reservoir Temperature Statistics
February Temperature
Rome (53.4 miles)
Lowest 2 February, 2026
18.6 °FAverage February
38.2 °FHighest 7 February, 2026
63.6 °F
Climate (2021–Present)
Rome (53.4 miles)
Average Low 2021–2026
36.7 °FAverage 2021–2026
51.5 °FAverage High 2021–2026
65.9 °F