Washington Missouri Climate Data

Monthly Average Climate Data for Washington Missouri

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January21.5 °F40.0 °F2.51 in.
February25.0 °F45.6 °F2.42 in.
March33.6 °F55.9 °F3.64 in.
April44.0 °F67.8 °F4.7 in.
May54.6 °F76.1 °F5.37 in.
June63.5 °F84.3 °F4.47 in.
July67.7 °F88.3 °F4.09 in.
August65.3 °F87.2 °F3.87 in.
September57.0 °F80.7 °F3.73 in.
October44.8 °F69.2 °F3.38 in.
November34.3 °F55.8 °F3.49 in.
December25.8 °F44.4 °F2.72 in.
Annual44.8 °F66.3 °F44.39 in.

Climate Data for Washington Missouri

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateApr. 21 - Apr. 30
Average Days With Frost100-125 Days
Plant Hardiness Zone - 2023Zone 6b : -5°F to 0°F
Plant Hardiness Zone - 2012Zone 6a : -10°F to -5°F
Current Drought ConditionsModerate Drought
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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