Hingham, MT 59528 Frost Dates
When can you plant in Hingham, MT?
The last spring frost here typically falls around 05/24, about 269 days from today. The first fall frost typically arrives around 09/15, about 114 frost-free days later.
Zone 4a (-30 to -25°F average annual minimum) comes from the USDA Plant Hardiness Zone Map; the frost dates above are the 1991-2020 normal at the nearest reporting NOAA station for Hingham, not a forecast for this year.
What to do before the first frost
About 3 weeks of growing season left in Hingham before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Hingham's last frost
05/24 is the middle of 30 years of NOAA records, not a promise. Plant by 05/12 and you're betting against frost in roughly 9 years out of 10. 06/07 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Hingham compares
At roughly 114 frost-free days, Hingham places 39,378 of 40,283 ZIP codes in this dataset. Within MT, it ranks 254 of 392.
Learn more
the frost range covers how to read the range around Hingham's dates instead of trusting one. local microclimates covers what one yard in Hingham can differ from the 59528 normal.