Sullivan Missouri Climate Data

Monthly Average Climate Data for Sullivan Missouri

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January22.0 °F40.7 °F2.64 in.
February25.3 °F45.8 °F2.56 in.
March33.8 °F55.6 °F3.71 in.
April44.6 °F67.3 °F4.96 in.
May54.7 °F75.7 °F5.18 in.
June63.4 °F83.6 °F4.35 in.
July67.4 °F87.9 °F4.19 in.
August65.6 °F87.2 °F3.94 in.
September57.7 °F80.1 °F3.72 in.
October46.1 °F68.9 °F3.35 in.
November35.2 °F55.5 °F3.6 in.
December26.5 °F44.6 °F2.63 in.
Annual45.2 °F66.1 °F44.83 in.

Climate Data for Sullivan Missouri

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateMay 1 - May 10
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 ConditionsNormal
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation