Jamestown Indiana Climate Data

Monthly Average Climate Data for Jamestown Indiana

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January18.8 °F34.5 °F2.93 in.
February21.3 °F38.4 °F2.45 in.
March30.6 °F49.3 °F3.21 in.
April41.2 °F61.9 °F4.47 in.
May52.5 °F72.5 °F4.69 in.
June60.9 °F80.5 °F5.16 in.
July64.0 °F83.6 °F4.48 in.
August61.9 °F82.3 °F3.34 in.
September54.3 °F77.3 °F3.31 in.
October43.2 °F65.2 °F3.26 in.
November33.0 °F50.6 °F3.4 in.
December24.1 °F39.1 °F2.9 in.
Annual42.2 °F61.3 °F43.6 in.

Climate Data for Jamestown Indiana

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateMay 11 - May 20
Average Days With Frost100-125 Days
Plant Hardiness Zone - 2023Zone 6a : -10°F to -5°F
Plant Hardiness Zone - 2012Zone 5b : -15°F to -10°F
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
2024 plantmaps.com