Richland Oregon Climate Data

Monthly Average Climate Data for Richland Oregon

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-5.4 °C3 °C42.93 mm
February-3.7 °C7.1 °C25.65 mm
March-0.7 °C12.8 °C26.16 mm
April1.9 °C17.4 °C34.54 mm
May6.1 °C23.1 °C34.54 mm
June9.7 °C27.6 °C31.24 mm
July13.1 °C33.6 °C8.89 mm
August12.1 °C33.3 °C9.14 mm
September7.3 °C27.7 °C12.45 mm
October2.1 °C18.8 °C22.86 mm
November-2.4 °C9.3 °C30.99 mm
December-4.9 °C3.6 °C46.48 mm
Annual2.9 °C18.1 °C325.87 mm

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 : -17.8°C to -15°C
Plant Hardiness Zone - 2012Zone 6b : -20.6°C to -17.8°C
Current Drought ConditionsModerate Drought
Köppen Climate ClassificationDsb - Humid Continental Climate - Dry Cool Summer