Denison, TX 75021 Frost Dates
Denison, TX: when does the frost end?
Around 03/14 is the usual last spring frost, about 198 days away. Fall's first freeze usually shows up around 11/19, roughly 250 days after the last spring frost.
Denison sits in USDA Zone 8a (10 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 12 weeks until Denison's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Denison's last frost
03/14 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 02/25 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/01 and only about 1 year in 10 sees frost after that.
Denison against the rest of the dataset
At roughly 250 frost-free days, Denison places 7,472 of 40,283 ZIP codes in this dataset. Within TX, it ranks 1,670 of 2,558.
Learn more
Before leaning on 75021's figures: the frost range explains how to read the range around Denison's dates instead of trusting one, while local microclimates explains what one yard in Denison can differ from the 75021 normal.