Frost dates in Union County, Pennsylvania
The average last spring frost in Union County falls Apr 25 to Apr 26 and the average first fall frost Oct 19 to Oct 20, depending on the ZIP code (50% odds, 32°F, NOAA 1991–2020 normals). USDA hardiness zone 6b. Places: Hartleton, Laurelton, Lewisburg, Mifflinburg, New Berlin, New Columbia. Pick a ZIP for 10% and 90% odds, soil temperature and the 7-day freeze forecast.
| ZIP | Place | Last spring frost | First fall frost | Zone |
|---|---|---|---|---|
| 17829 | Hartleton | Apr 25 | Oct 19 | 6b |
| 17835 | Laurelton | Apr 25 | Oct 19 | 6b |
| 17837 | Lewisburg | Apr 26 | Oct 20 | 6b |
| 17844 | Mifflinburg | Apr 25 | Oct 19 | 6b |
| 17845 | Laurelton | Apr 25 | Oct 19 | 6b |
| 17855 | New Berlin | Apr 26 | Oct 20 | 6b |
| 17856 | New Columbia | Apr 26 | Oct 20 | 6b |
| 17880 | Apr 25 | Oct 19 | 6b | |
| 17885 | Apr 25 | Oct 19 | 6b | |
| 17886 | West Milton | Apr 26 | Oct 20 | 6b |
| 17887 | Apr 26 | Oct 20 | 6b |
Nearby counties
Snyder County Northumberland County Montour County Lycoming County Clinton County Juniata County
All Pennsylvania counties · Download Pennsylvania frost dates (CSV)
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