Drummond, MT 59837 Frost Dates
59837, near Drummond, MT: the frost window
The NOAA station nearest to 59837 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 5a (-20 to -15°F average annual minimum).
Drummond against the rest of the dataset
About 80 days separate Drummond's last and first frost, putting it 40,059 of 40,283 ZIP codes nationally. Within MT, it ranks 365 of 392.
Learn more
Two guides worth reading on 59837: zone vs. frost date, on why Zone 5a and Drummond's frost date answer different questions, and local microclimates, on what one yard in Drummond can differ from the 59837 normal.