ZIP Code 19428 Hardiness Zones and Climate Data

ZIP Code 19428 - Conshohocken Pennsylvania is in 2023 USDA Hardiness Zones 7b (5°F to 10°F) and 7a (0°F to 5°F)

Additional Gardening Related Climate Data for ZIP Code 19428 - Conshohocken, Pennsylvania

2023 Hardiness Zone:Zone 7b: 5°F to 10°F
Zone 7a: 0°F to 5°F
2012 Hardiness Zone: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:Apr. 21 - Apr. 30
Koppen-Geiger Climate Zone:Dfa - Humid Continental Hot Summers
Ecoregion:64d - Piedmont Limestone/Dolomite Lowlands
Current Drought Status:Exceptional Drought
Heat Zone Days: 15 - 30 days Over 86°F

Annual Climate Data for ZIP Code 19428 - Conshohocken, PA

JanFebMarAprMayJunJulAugSepOctNovDecAnnual
Avg Min Temp (°F)23253241516166645745362744
Avg Max Temp (°F)39425163738286847766554464
Avg Precip (In.)3.982.973.973.894.563.874.644.344.633.363.783.6947.68

Source Data:

2025 plantmaps.com