Richland Oregon Climate Data

Monthly Average Climate Data for Richland Oregon

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January22.3 °F37.4 °F1.69 in.
February25.4 °F44.7 °F1.01 in.
March30.8 °F55.1 °F1.03 in.
April35.4 °F63.3 °F1.36 in.
May42.9 °F73.5 °F1.36 in.
June49.4 °F81.6 °F1.23 in.
July55.5 °F92.4 °F0.35 in.
August53.7 °F92.0 °F0.36 in.
September45.2 °F81.9 °F0.49 in.
October35.7 °F65.8 °F0.9 in.
November27.6 °F48.7 °F1.22 in.
December23.2 °F38.4 °F1.83 in.
Annual37.3 °F64.6 °F12.83 in.

Climate Data for Richland Oregon

Average First Frost DateSep. 21 - Sep. 30
Average Last Frost DateJun. 1 - Jun. 10
Average Days With FrostOver 180 Days
Plant Hardiness Zone - 2023Zone 7a : 0°F to 5°F
Plant Hardiness Zone - 2012Zone 6b : -5°F to 0°F
Current Drought ConditionsModerate Drought
Köppen Climate ClassificationDsb - Humid Continental Climate - Dry Cool Summer