Litchfield Park, AZ 85307 Frost Dates
85307, near Litchfield Park, AZ: the frost window
Around 01/07 is the usual last spring frost, about 132 days away. Fall's first freeze usually shows up around 12/24, roughly 351 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Litchfield Park in Zone 9b (25 to 30°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
Stretching the season past the first frost
Litchfield Park's growing season runs out in roughly 17 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 Litchfield Park's last frost
01/07 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 02/05 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 12/17 and only about 1 year in 10 sees frost after that.
Litchfield Park against the rest of the dataset
At roughly 351 frost-free days, Litchfield Park places 2,310 of 40,283 ZIP codes in this dataset. Within AZ, it ranks 70 of 506.
Learn more
Two guides worth reading on 85307: zone vs. frost date, on why Zone 9b and Litchfield Park's frost date answer different questions, and the frost range, on how to read the range around Litchfield Park's dates instead of trusting one.