Rule, TX 79540 Frost Dates
Rule, TX: when does the frost end?
Around 03/23 is the usual last spring frost, about 207 days away. Fall's first freeze usually shows up around 11/11, roughly 234 days after the last spring frost.
Rule 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 11 weeks until Rule'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
03/23 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/02 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/12 and only about 1 year in 10 sees frost after that.
Rule against the rest of the dataset
About 234 days separate Rule's last and first frost, putting it 9,795 of 40,283 ZIP codes nationally. Within TX, it ranks 2,071 of 2,558.
Learn more
Before leaning on 79540's figures: local microclimates explains what one yard in Rule can differ from the 79540 normal, while zone vs. frost date explains why Zone 8a and Rule's frost date answer different questions.