Nampa Idaho Climate Data

Monthly Average Climate Data for Nampa Idaho

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January24.2 °F38.9 °F1.39 in.
February27.2 °F46.6 °F0.96 in.
March32.4 °F56.5 °F1.21 in.
April36.9 °F63.3 °F1.12 in.
May44.9 °F72.5 °F1.32 in.
June51.7 °F81.1 °F0.72 in.
July58.2 °F91.8 °F0.24 in.
August56.2 °F90.4 °F0.15 in.
September47.8 °F80.1 °F0.42 in.
October37.7 °F65.7 °F0.77 in.
November29.3 °F49.8 °F1.13 in.
December24.2 °F39.4 °F1.5 in.
Annual39.2 °F64.7 °F10.93 in.

Climate Data for Nampa Idaho

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateMay 21 - May 31
Average Days With Frost100-125 Days
Plant Hardiness Zone - 2023Zone 7a : 0°F to 5°F
Plant Hardiness Zone - 2012Zone 7a : 0°F to 5°F
Current Drought ConditionsNormal
Köppen Climate ClassificationBSk - Cold Semi-Arid Climate