Flaxville, MT 59276 Frost Dates
Flaxville, MT: when does the frost end?
Typically, the last spring freeze lands around 05/28, roughly 273 days out. Fall's first freeze usually shows up around 09/07, roughly 101 days after the last spring frost.
Flaxville sits in USDA Zone 3b (-35 to -30°F average annual minimum). The dates above are NOAA's 1991-2020 normal at the nearest reporting station, a 30-year average, not a forecast.
Stretching the season past the first frost
With roughly 1 week until Flaxville's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
How much risk comes with planting early here
05/28 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 05/15 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 06/13 and only about 1 year in 10 sees frost after that.
Flaxville against the rest of the dataset
About 101 days separate Flaxville's last and first frost, putting it 39,702 of 40,283 ZIP codes nationally. Within MT, it ranks 303 of 392.
Learn more
Before leaning on 59276's figures: zone vs. frost date explains why Zone 3b and Flaxville's frost date answer different questions, while the frost range explains how to read the range around Flaxville's dates instead of trusting one.