Lake Havasu City, AZ 85360 Frost Dates
Lake Havasu City, AZ: when does the frost end?
Around 03/19 is the usual last spring frost, about 203 days away. Fall's first freeze usually shows up around 11/23, roughly 246 days after the last spring frost.
Zone 9b (25 to 30°F average annual minimum) comes from the USDA Plant Hardiness Zone Map; the frost dates above are the 1991-2020 normal at the nearest reporting NOAA station for Lake Havasu City, not a forecast for this year.
Stretching the season past the first frost
With roughly 12 weeks until Lake Havasu City'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
03/19 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 02/23 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/22 and only about 1 year in 10 sees frost after that.
Lake Havasu City against the rest of the dataset
About 246 days separate Lake Havasu City's last and first frost, putting it 7,909 of 40,283 ZIP codes nationally. Within AZ, it ranks 319 of 506.
Learn more
Before leaning on 85360's figures: the frost range explains how to read the range around Lake Havasu City's dates instead of trusting one, while local microclimates explains what one yard in Lake Havasu City can differ from the 85360 normal.