Union Star Missouri Climate Data

Monthly Average Climate Data for Union Star Missouri

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January16.1 °F35.2 °F0.95 in.
February20.3 °F40.5 °F1.32 in.
March30.5 °F52.9 °F2.38 in.
April40.7 °F63.8 °F3.74 in.
May52.4 °F73.9 °F5.46 in.
June62.2 °F83.1 °F5.39 in.
July66.3 °F87.2 °F4.87 in.
August64.1 °F85.8 °F4.13 in.
September55.1 °F78.7 °F3.9 in.
October42.9 °F66.4 °F3.14 in.
November31.4 °F52.4 °F1.95 in.
December21.3 °F39.5 °F1.53 in.
Annual41.9 °F63.3 °F38.76 in.

Climate Data for Union Star Missouri

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateMay 1 - May 10
Average Days With Frost125-150 Days
Plant Hardiness Zone - 2023Zone 6a : -10°F to -5°F
Plant Hardiness Zone - 2012Zone 5b : -15°F to -10°F
Current Drought ConditionsNormal
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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