La Grande Oregon Climate Data

Monthly Average Climate Data for La Grande Oregon

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January24.4 °F38.3 °F1.87 in.
February26.0 °F43.0 °F1.25 in.
March29.6 °F51.5 °F1.7 in.
April33.6 °F58.3 °F1.82 in.
May40.3 °F67.4 °F2.1 in.
June45.5 °F74.7 °F1.5 in.
July50.2 °F86.4 °F0.49 in.
August48.9 °F86.8 °F0.63 in.
September42.0 °F77.3 °F0.62 in.
October34.2 °F62.4 °F1.4 in.
November29.1 °F47.1 °F2.18 in.
December24.0 °F38.0 °F2.39 in.
Annual35.7 °F60.9 °F17.95 in.

Climate Data for La Grande Oregon

Average First Frost DateOct. 1 - Oct. 10
Average Last Frost DateMay 21 - May 31
Average Days With Frost125-150 Days
Plant Hardiness Zone - 2023Zone 6b : -5°F to 0°F
Plant Hardiness Zone - 2012Zone 6b : -5°F to 0°F
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationDsb - Humid Continental Climate - Dry Cool Summer