ZIP Code 19341 Hardiness Zones and Climate Data

ZIP Code 19341 - Exton Pennsylvania is in 2023 USDA Hardiness Zones 7a (0°F to 5°F)

Additional Gardening Related Climate Data for ZIP Code 19341 - Exton, Pennsylvania

2023 Hardiness Zone:Zone 7a: 0°F to 5°F
2012 Hardiness Zone:Zone 6b: -5°F to 0°F
Zone 7a: 0°F to 5°F
1990 Hardiness Zone:Zone 6b: -5F to 0F
Average First Frost Date:Oct. 11 - Oct. 20
Average Last Frost Date:May 1 - May 10
Koppen-Geiger Climate Zone:Dfa - Humid Continental Hot Summers
Ecoregion:64d - Piedmont Limestone/Dolomite Lowlands
Current Drought Status:Exceptional Drought
Heat Zone Days: 1 - 7 days Over 86°F

Annual Climate Data for ZIP Code 19341 - Exton, PA

JanFebMarAprMayJunJulAugSepOctNovDecAnnual
Avg Min Temp (°F)21233140505964625543352642
Avg Max Temp (°F)38425162728085847766544363
Avg Precip (In.)3.882.953.883.754.534.064.493.744.583.313.743.6146.51

Source Data:

2025 plantmaps.com