McLean Nebraska Climate Data

Monthly Average Climate Data for McLean Nebraska

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January11.4 °F33.3 °F0.56 in.
February16.0 °F38.5 °F0.77 in.
March25.2 °F50.3 °F1.48 in.
April35.4 °F60.4 °F3.03 in.
May47.4 °F71.8 °F4.24 in.
June58.6 °F81.7 °F4.2 in.
July63.2 °F85.8 °F3.0 in.
August60.9 °F83.6 °F3.58 in.
September51.4 °F77.0 °F2.81 in.
October37.8 °F63.9 °F2.42 in.
November24.3 °F48.9 °F1.15 in.
December14.5 °F35.6 °F0.82 in.
Annual37.2 °F60.9 °F28.06 in.

Climate Data for McLean Nebraska

Average First Frost DateOct. 1 - Oct. 10
Average Last Frost DateMay 21 - May 31
Average Days With Frost150-180 Days
Plant Hardiness Zone - 2023Zone 5b : -15°F to -10°F
Plant Hardiness Zone - 2012Zone 5a : -20°F to -15°F
Current Drought ConditionsSevere Drought
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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