La Grande Washington Climate Data

Monthly Average Climate Data for La Grande Washington

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January33.5 °F45.1 °F5.28 in.
February33.4 °F47.4 °F3.33 in.
March35.4 °F51.8 °F4.93 in.
April38.3 °F58.4 °F3.92 in.
May43.9 °F66.4 °F2.87 in.
June48.0 °F71.0 °F2.16 in.
July52.0 °F78.3 °F0.78 in.
August52.4 °F79.4 °F1.02 in.
September48.4 °F72.2 °F1.63 in.
October42.0 °F59.9 °F3.77 in.
November36.4 °F49.2 °F5.55 in.
December32.9 °F44.0 °F5.11 in.
Annual41.4 °F60.3 °F40.35 in.

Climate Data for La Grande Washington

Average First Frost DateOct. 21 - Oct. 31
Average Last Frost DateApr. 21 - Apr. 30
Average Days With Frost75-100 Days
Plant Hardiness Zone - 2023Zone 8b : 15°F to 20°F
Plant Hardiness Zone - 2012Zone 8a : 10°F to 15°F
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationCsb - Warm-Summer Mediterranean Climate