Nichols Hills, OK 73154 Frost Dates
73154, near Nichols Hills, OK: the frost window
Around 04/02 is the usual last spring frost, about 217 days away. Fall's first freeze usually shows up around 11/04, roughly 216 days after the last spring frost.
Nichols Hills 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
Nichols Hills's growing season runs out in roughly 10 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
Why 04/02 isn't a guarantee
04/02 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/14 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/18 and only about 1 year in 10 sees frost after that.
Nichols Hills against the rest of the dataset
About 216 days separate Nichols Hills's last and first frost, putting it 13,786 of 40,283 ZIP codes nationally. Within OK, it ranks 325 of 764.
Learn more
Two guides worth reading on 73154: zone vs. frost date, on why Zone 7b and Nichols Hills's frost date answer different questions, and the frost range, on how to read the range around Nichols Hills's dates instead of trusting one.