Leavenworth, KS 66048 Frost Dates
Leavenworth, KS: when does the frost end?
The last spring frost here typically falls around 04/19, about 234 days from today. Fall's first freeze usually shows up around 10/19, roughly 181 days after the last spring frost.
Leavenworth 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 Leavenworth's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
How much risk comes with planting early here
04/19 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/05 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/04 and only about 1 year in 10 sees frost after that.
Leavenworth against the rest of the dataset
About 181 days separate Leavenworth's last and first frost, putting it 24,441 of 40,283 ZIP codes nationally. Within KS, it ranks 484 of 745.
Learn more
Before leaning on 66048's figures: zone vs. frost date explains why Zone 6b and Leavenworth's frost date answer different questions, while the frost range explains how to read the range around Leavenworth's dates instead of trusting one.