Williston Vermont Climate Data

Monthly Average Climate Data for Williston Vermont

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January8.5 °F27.4 °F2.53 in.
February9.5 °F30.1 °F2.09 in.
March18.9 °F38.7 °F2.76 in.
April32.0 °F52.4 °F3.53 in.
May43.8 °F66.1 °F3.91 in.
June53.3 °F74.6 °F4.61 in.
July58.4 °F79.2 °F4.76 in.
August56.6 °F77.4 °F4.28 in.
September48.7 °F69.9 °F4.0 in.
October37.7 °F56.5 °F4.3 in.
November28.1 °F44.8 °F3.15 in.
December17.0 °F33.3 °F3.09 in.
Annual34.4 °F54.2 °F43.01 in.

Climate Data for Williston Vermont

Average First Frost DateOct. 1 - Oct. 10
Average Last Frost DateMay 21 - May 31
Average Days With Frost150-180 Days
Plant Hardiness Zone - 2023Zone 5a : -20°F to -15°F
Plant Hardiness Zone - 2012Zone 4b : -25°F to -20°F
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationDfb - Humid Continental Mild Summer, Wet All Year
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