Marana, AZ 85652 Frost Dates
Marana, AZ: when does the frost end?
Around 02/26 is the usual last spring frost, about 182 days away. Fall's first freeze usually shows up around 12/04, roughly 279 days after the last spring frost.
Marana sits in USDA Zone 9b (25 to 30°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 14 weeks until Marana's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Marana's last frost
02/26 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 01/29 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 03/18 and only about 1 year in 10 sees frost after that.
Marana against the rest of the dataset
About 279 days separate Marana's last and first frost, putting it 4,859 of 40,283 ZIP codes nationally. Within AZ, it ranks 290 of 506.
Learn more
Before leaning on 85652's figures: local microclimates explains what one yard in Marana can differ from the 85652 normal, while zone vs. frost date explains why Zone 9b and Marana's frost date answer different questions.