Houston, MN 55943 Frost Dates
Houston, MN: when does the frost end?
The last spring frost here typically falls around 05/08, about 253 days from today. Fall's first freeze usually shows up around 10/03, roughly 147 days after the last spring frost.
Houston 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
With roughly 5 weeks until Houston's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Houston's last frost
05/08 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/25 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/22 and only about 1 year in 10 sees frost after that.
Houston against the rest of the dataset
About 147 days separate Houston's last and first frost, putting it 35,939 of 40,283 ZIP codes nationally. Within MN, it ranks 610 of 943.
Learn more
Before leaning on 55943's figures: the frost range explains how to read the range around Houston's dates instead of trusting one, while local microclimates explains what one yard in Houston can differ from the 55943 normal.