Fort Yukon, AK 99740 Frost Dates
Fort Yukon, AK: when does the frost end?
The NOAA station nearest to 99740 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 3a (-40 to -35°F average annual minimum).
Fort Yukon against the rest of the dataset
About 58 days separate Fort Yukon's last and first frost, putting it 40,198 of 40,283 ZIP codes nationally. Within AK, it ranks 261 of 269.
Learn more
Before leaning on 99740's figures: the methodology explains exactly which NOAA and USDA figures feed 99740's numbers, while zone vs. frost date explains why Zone 3a and Fort Yukon's frost date answer different questions.