Norman, OK 73019 Frost Dates
Norman, OK: when does the frost end?
The last spring frost here typically falls around 03/31, about 215 days from today. Fall's first freeze usually shows up around 11/05, roughly 219 days after the last spring frost.
Norman sits in USDA Zone 7b (5 to 10°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 10 weeks until Norman'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
03/31 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/12 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/17 and only about 1 year in 10 sees frost after that.
Norman against the rest of the dataset
About 219 days separate Norman's last and first frost, putting it 12,920 of 40,283 ZIP codes nationally. Within OK, it ranks 213 of 764.
Learn more
Before leaning on 73019's figures: the frost range explains how to read the range around Norman's dates instead of trusting one, while local microclimates explains what one yard in Norman can differ from the 73019 normal.