La Grande/Union County Airport Weather Forecast
- 38
- 68
Increasing Clouds
- 39
- 71
Partly Sunny
- 41
- 74
Mostly Sunny
- 45
- 78
Mostly Sunny
- 44
- 81
Partly Sunny
- 44
- 80
Partly Sunny
Today 19 May Grande Ronde Valley
Sunny in the Morning, becoming partly cloudy. Highs in the upper 60s. Light wind.
Tonight 19 May Grande Ronde Valley
Partly cloudy. Lows in the upper 30s to lower 40s. Northwest wind 5 to 10 Mph in the Evening, becoming light.
La Grande/Union County Airport Temperature Statistics
May Temperature
La Grande/Union County Airport (0 miles)
Lowest 1 May, 2026
36 °FAverage May
58.4 °FHighest 12 May, 2026
91 °F
Climate (2021–Present)
La Grande/Union County Airport (0 miles)
Average Low 2021–2026
38.4 °FAverage 2021–2026
50.7 °FAverage High 2021–2026
62.8 °F