Washington, LA 70571 Frost Dates
70571, near Washington, LA: the frost window
Around 02/28 is the usual last spring frost, about 184 days away. Fall's first freeze usually shows up around 11/23, roughly 267 days after the last spring frost.
Washington sits in USDA Zone 9a (20 to 25°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
Washington's growing season runs out in roughly 12 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 Washington's last frost
02/28 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 01/31 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 03/25 and only about 1 year in 10 sees frost after that.
Washington against the rest of the dataset
Washington's growing season runs about 267 days, ranking 5,887 of 40,283 US ZIP codes measured here, longest to shortest. Within LA, it ranks 455 of 710.
Learn more
Two guides worth reading on 70571: zone vs. frost date, on why Zone 9a and Washington's frost date answer different questions, and the frost range, on how to read the range around Washington's dates instead of trusting one.