Adams, OR 97859 Frost Dates
97859, near Adams, OR: the frost window
The NOAA station nearest to 97859 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 6b (-5 to 0°F average annual minimum).
Adams against the rest of the dataset
About 48 days separate Adams's last and first frost, putting it 40,228 of 40,283 ZIP codes nationally. Within OR, it ranks 460 of 463.
Learn more
Two guides worth reading on 97859: zone vs. frost date, on why Zone 6b and Adams's frost date answer different questions, and local microclimates, on what one yard in Adams can differ from the 97859 normal.