Clayton, ID 83227 Frost Dates

Clayton, ID: when does the frost end?

The NOAA station nearest to 83227 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).

Clayton against the rest of the dataset

Clayton's growing season runs about 29 days, ranking 40,269 of 40,283 US ZIP codes measured here, longest to shortest. Within ID, it ranks 315 of 320.

Learn more

Before leaning on 83227's figures: the methodology explains exactly which NOAA and USDA figures feed 83227's numbers, while zone vs. frost date explains why Zone 5b and Clayton's frost date answer different questions.