Union Oregon Climate Data

Monthly Average Climate Data for Union Oregon

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-4.2 °C3.5 °C30.73 mm
February-3.2 °C6.5 °C24.89 mm
March-1.3 °C11.1 °C31.5 mm
April0.8 °C14.8 °C45.21 mm
May4.4 °C19.8 °C64.26 mm
June7.3 °C23.7 °C39.62 mm
July9.9 °C30.1 °C11.43 mm
August9.1 °C30.3 °C12.7 mm
September5.2 °C25.3 °C15.49 mm
October0.9 °C17.1 °C29.46 mm
November-1.7 °C8.6 °C39.37 mm
December-4.6 °C3.5 °C32 mm
Annual1.9 °C16.2 °C376.66 mm

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 : -20.6°C to -17.8°C
Plant Hardiness Zone - 2012Zone 6b : -20.6°C to -17.8°C
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationDfb - Humid Continental Mild Summer, Wet All Year
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