Swan Valley, ID 83403 Frost Dates
When can you plant in Swan Valley, ID?
The NOAA station nearest to 83403 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 5b (-15 to -10°F average annual minimum).
How Swan Valley compares
At roughly 69 frost-free days, Swan Valley places 40,131 of 40,283 ZIP codes in this dataset. Within ID, it ranks 299 of 320.
Learn more
the methodology covers exactly which NOAA and USDA figures feed 83403's numbers. zone vs. frost date covers why Zone 5b and Swan Valley's frost date answer different questions.