Iraan, TX 79781 Frost Dates
Iraan, TX: when does the frost end?
Around 03/31 is the usual last spring frost, about 215 days away. Fall's first freeze usually shows up around 11/03, roughly 217 days after the last spring frost.
Zone 8b (15 to 20°F average annual minimum) comes from the USDA Plant Hardiness Zone Map; the frost dates above are the 1991-2020 normal at the nearest reporting NOAA station for Iraan, not a forecast for this year.
Stretching the season past the first frost
With roughly 10 weeks until Iraan'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 03/10 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/19 and only about 1 year in 10 sees frost after that.
Iraan against the rest of the dataset
About 217 days separate Iraan's last and first frost, putting it 13,561 of 40,283 ZIP codes nationally. Within TX, it ranks 2,329 of 2,558.
Learn more
Before leaning on 79781's figures: zone vs. frost date explains why Zone 8b and Iraan's frost date answer different questions, while the frost range explains how to read the range around Iraan's dates instead of trusting one.