Litchfield Park, AZ 85309 Frost Dates
Litchfield Park, AZ: when does the frost end?
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
With roughly 17 weeks until Litchfield Park's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
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 2,311 of 40,283 ZIP codes in this dataset. Within AZ, it ranks 71 of 506.
Learn more
Before leaning on 85309's figures: local microclimates explains what one yard in Litchfield Park can differ from the 85309 normal, while zone vs. frost date explains why Zone 9b and Litchfield Park's frost date answer different questions.