Glasgow Illinois Climate Data

Monthly Average Climate Data for Glasgow Illinois

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January18.6 °F35.8 °F2.18 in.
February22.1 °F41.0 °F2.04 in.
March31.2 °F52.3 °F2.93 in.
April41.7 °F64.7 °F4.18 in.
May53.1 °F74.5 °F4.87 in.
June62.4 °F83.2 °F5.03 in.
July65.8 °F86.5 °F3.98 in.
August63.3 °F85.4 °F3.41 in.
September54.8 °F79.5 °F3.33 in.
October43.4 °F67.3 °F3.0 in.
November32.8 °F52.9 °F3.01 in.
December23.8 °F40.7 °F2.26 in.
Annual42.8 °F63.7 °F40.22 in.

Climate Data for Glasgow Illinois

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateApr. 21 - Apr. 30
Average Days With Frost100-125 Days
Plant Hardiness Zone - 2023Zone 6a : -10°F to -5°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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