Wheatland, WY 82201 Frost Dates
82201, near Wheatland, WY: the frost window
The last spring frost here typically falls around 05/19, about 264 days from today. Fall's first freeze usually shows up around 09/22, roughly 125 days after the last spring frost.
Wheatland 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.
Stretching the season past the first frost
Wheatland's growing season runs out in roughly 4 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
How much risk comes with planting early here
05/19 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 05/07 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 06/02 and only about 1 year in 10 sees frost after that.
Wheatland against the rest of the dataset
Wheatland's growing season runs about 125 days, ranking 38,759 of 40,283 US ZIP codes measured here, longest to shortest. Within WY, it ranks 79 of 192.
Learn more
Two guides worth reading on 82201: zone vs. frost date, on why Zone 5a and Wheatland's frost date answer different questions, and the frost range, on how to read the range around Wheatland's dates instead of trusting one.