Fort Yukon, AK 99733 Frost Dates
99733, near Fort Yukon, AK: the frost window
The NOAA station nearest to 99733 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 1a (-60 to -55°F average annual minimum).
Fort Yukon against the rest of the dataset
At roughly 58 frost-free days, Fort Yukon places 40,197 of 40,283 ZIP codes in this dataset. Within AK, it ranks 260 of 269.
Learn more
Two guides worth reading on 99733: the methodology, on exactly which NOAA and USDA figures feed 99733's numbers, and zone vs. frost date, on why Zone 1a and Fort Yukon's frost date answer different questions.