Union Oregon Climate Data

Monthly Average Climate Data for Union Oregon

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January24.4 °F38.3 °F1.21 in.
February26.2 °F43.7 °F0.98 in.
March29.7 °F52.0 °F1.24 in.
April33.4 °F58.6 °F1.78 in.
May39.9 °F67.7 °F2.53 in.
June45.1 °F74.6 °F1.56 in.
July49.8 °F86.1 °F0.45 in.
August48.3 °F86.6 °F0.5 in.
September41.3 °F77.5 °F0.61 in.
October33.7 °F62.8 °F1.16 in.
November29.0 °F47.5 °F1.55 in.
December23.8 °F38.3 °F1.26 in.
Annual35.4 °F61.1 °F14.83 in.

Climate Data for Union Oregon

Average First Frost DateSep.11 - Sep. 20
Average Last Frost DateJun. 1 - Jun. 10
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 ClassificationDfb - Humid Continental Mild Summer, Wet All Year
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