Watson Illinois Climate Data

Monthly Average Climate Data for Watson Illinois

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January21.3 °F37.3 °F2.99 in.
February24.3 °F42.1 °F2.51 in.
March33.3 °F53.0 °F3.32 in.
April43.6 °F65.5 °F4.9 in.
May54.5 °F75.2 °F4.97 in.
June63.5 °F84.0 °F5.0 in.
July66.4 °F87.2 °F4.36 in.
August64.0 °F86.0 °F2.94 in.
September55.8 °F80.3 °F3.12 in.
October44.6 °F68.5 °F3.53 in.
November34.3 °F53.6 °F3.76 in.
December26.2 °F41.9 °F2.91 in.
Annual44.3 °F64.6 °F44.31 in.

Climate Data for Watson Illinois

Average First Frost DateOct. 21 - Oct. 31
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 ConditionsAbnormally Dry
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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