Wallace, ID 83808 Frost Dates
Wallace, ID: when does the frost end?
The last spring frost here typically falls around 05/05, about 250 days from today. Fall's first freeze usually shows up around 10/02, roughly 149 days after the last spring frost.
Wallace 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 5 weeks until Wallace's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 05/05 isn't a guarantee
05/05 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 05/21 and only about 1 year in 10 sees frost after that.
Wallace against the rest of the dataset
About 149 days separate Wallace's last and first frost, putting it 35,545 of 40,283 ZIP codes nationally. Within ID, it ranks 119 of 320.
Learn more
Before leaning on 83808's figures: local microclimates explains what one yard in Wallace can differ from the 83808 normal, while zone vs. frost date explains why Zone 6b and Wallace's frost date answer different questions.