Fort Yukon, AK 99722 Frost Dates
Fort Yukon, AK: when does the frost end?
The NOAA station nearest to 99722 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 1b (-55 to -50°F average annual minimum).
Fort Yukon against the rest of the dataset
About 66 days separate Fort Yukon's last and first frost, putting it 40,148 of 40,283 ZIP codes nationally. Within AK, it ranks 255 of 269.
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Before leaning on 99722's figures: local microclimates explains what one yard in Fort Yukon can differ from the 99722 normal, while the methodology explains exactly which NOAA and USDA figures feed 99722's numbers.