Kalispell, MT 59925 Frost Dates
Frost dates for Kalispell, MT, ZIP 59925
The NOAA station nearest to 59925 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 4b (-25 to -20°F average annual minimum).
How Kalispell compares
At roughly 44 frost-free days, Kalispell places 40,236 of 40,283 ZIP codes in this dataset. Within MT, it ranks 386 of 392.
Learn more
zone vs. frost date explains why Zone 4b and Kalispell's frost date answer different questions, and local microclimates explains what one yard in Kalispell can differ from the 59925 normal.