Cottonwood, ID 83533 Frost Dates
Cottonwood, ID: when does the frost end?
The last spring frost here typically falls around 05/06, about 251 days from today. Fall's first freeze usually shows up around 10/13, roughly 156 days after the last spring frost.
Cottonwood sits in USDA Zone 6b (-5 to 0°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 7 weeks until Cottonwood's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Cottonwood's last frost
05/06 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/22 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/26 and only about 1 year in 10 sees frost after that.
Cottonwood against the rest of the dataset
About 156 days separate Cottonwood's last and first frost, putting it 33,735 of 40,283 ZIP codes nationally. Within ID, it ranks 91 of 320.
Learn more
Before leaning on 83533's figures: local microclimates explains what one yard in Cottonwood can differ from the 83533 normal, while zone vs. frost date explains why Zone 6b and Cottonwood's frost date answer different questions.