Superior, WY 82932 Frost Dates

Superior, WY: when does the frost end?

The NOAA station nearest to 82932 does not report a usable frost-date normal for either event, so no last-frost or first-frost figure is shown here. The USDA hardiness zone below is still real: Zone 4a (-30 to -25°F average annual minimum).

Superior against the rest of the dataset

At roughly 84 frost-free days, Superior places 40,008 of 40,283 ZIP codes in this dataset. Within WY, it ranks 154 of 192.

Learn more

Before leaning on 82932's figures: zone vs. frost date explains why Zone 4a and Superior's frost date answer different questions, while local microclimates explains what one yard in Superior can differ from the 82932 normal.