Nichols Hills, OK 73118 Frost Dates
73118, near Nichols Hills, OK: the frost window
Typically, the last spring freeze lands around 04/02, roughly 217 days out. 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.
The actual range around Nichols Hills's last frost
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
Nichols Hills's growing season runs about 216 days, ranking 13,785 of 40,283 US ZIP codes measured here, longest to shortest. Within OK, it ranks 324 of 764.
Learn more
Two guides worth reading on 73118: local microclimates, on what one yard in Nichols Hills can differ from the 73118 normal, and zone vs. frost date, on why Zone 7b and Nichols Hills's frost date answer different questions.