San Juan County, Utah

Local growing conditions for San Juan County: the USDA hardiness zones found here, frost dates, and live weather for communities across the county. Based on 8 ZIP codes in our data.

Hardiness zones in San Juan County

San Juan County spans these USDA plant hardiness zones (by number of ZIP codes):

Zone 6 (1) Zone 7 (5) Zone 8 (2)

Local weather & frost dates

Open any community in San Juan County for its live forecast, frost dates, and planting calendar:

White Mesa 84511 Tselakai Dezza 84512 La Sal 84530 Halchita 84531 Halls Crossing 84533 Montezuma Creek 84534 Monticello 84535 Oljato-Monument Valley 84536

More for Utah

Agriculture in Utah
Frost dates across Utah
USDA hardiness zones explained
Planting calendar by ZIP code

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County growing conditions are compiled from our ZIP-code database, USDA hardiness-zone data, and NOAA climate normals. Conditions vary within a county by elevation and local microclimate. Page updated Aug 4, 2026.