Utah frost dates by county and ZIP code
Across 299 Utah ZIP codes the average last spring frost runs Mar 14 to Jun 21 and the average first fall frost Sep 1 to Nov 10 (50% odds, 32°F, NOAA 1991–2020 normals), with USDA hardiness zones. Download the table as CSV.
Counties
- Beaver
- Box Elder
- Cache
- Carbon
- Daggett
- Davis
- Duchesne
- Emery
- Garfield
- Grand
- Iron
- Juab
- Kane
- Millard
- Morgan
- Piute
- Rich
- Salt Lake
- San Juan
- Sanpete
- Sevier
- Summit
- Tooele
- Uintah
- Utah
- Wasatch
- Washington
- Wayne
- Weber
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