Gretna Nebraska Climate Data

Monthly Average Climate Data for Gretna Nebraska

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January14.0 °F32.1 °F0.83 in.
February17.8 °F37.0 °F1.14 in.
March28.4 °F49.7 °F1.8 in.
April38.9 °F62.2 °F3.25 in.
May51.0 °F72.3 °F4.93 in.
June62.0 °F82.5 °F5.08 in.
July65.7 °F85.9 °F3.38 in.
August63.4 °F83.9 °F4.05 in.
September54.1 °F77.5 °F3.06 in.
October41.7 °F64.5 °F2.6 in.
November29.0 °F49.2 °F1.42 in.
December18.9 °F36.4 °F1.33 in.
Annual40.4 °F61.1 °F32.87 in.

Climate Data for Gretna Nebraska

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateMay 11 - May 20
Average Days With Frost125-150 Days
Plant Hardiness Zone - 2023Zone 6a : -10°F to -5°F
Plant Hardiness Zone - 2012Zone 5b : -15°F to -10°F
Current Drought ConditionsNormal
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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