Red Lodge, MT 59068 Frost Dates
When can you plant in Red Lodge, MT?
Around 06/03 is the usual last spring frost, about 279 days away. The first fall frost typically arrives around 09/19, about 106 frost-free days later.
Red Lodge sits in USDA Zone 5a (-20 to -15°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.
What to do before the first frost
About 3 weeks of growing season left in Red Lodge before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Red Lodge's last frost
06/03 is the middle of 30 years of NOAA records, not a promise. Plant by 05/19 and you're betting against frost in roughly 9 years out of 10. 06/18 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Red Lodge compares
About 106 days separate Red Lodge's last and first frost, putting it 39,581 of 40,283 ZIP codes nationally. Within MT, it ranks 287 of 392.
Learn more
local microclimates covers what one yard in Red Lodge can differ from the 59068 normal. zone vs. frost date covers why Zone 5a and Red Lodge's frost date answer different questions.