Hudson, WY 82524 Frost Dates
When can you plant in Hudson, WY?
The last spring frost here typically falls around 05/16, about 261 days from today. The first fall frost typically arrives around 09/28, about 133 frost-free days later.
Hudson sits in USDA Zone 4b (-25 to -20°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 4 weeks of growing season left in Hudson before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
Why 05/16 isn't a guarantee
05/16 is the middle of 30 years of NOAA records, not a promise. Plant by 05/01 and you're betting against frost in roughly 9 years out of 10. 05/31 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Hudson compares
About 133 days separate Hudson's last and first frost, putting it 38,114 of 40,283 ZIP codes nationally. Within WY, it ranks 51 of 192.
Learn more
zone vs. frost date covers why Zone 4b and Hudson's frost date answer different questions. the frost range covers how to read the range around Hudson's dates instead of trusting one.