Lake Havasu City, AZ 86403 Frost Dates
Frost dates for Lake Havasu City, AZ, ZIP 86403
Typically, the last spring freeze lands around 01/05, roughly 130 days out. The first fall frost typically arrives around 12/29, about 365 frost-free days later.
Zone 10a (30 to 35°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.
What to do before the first frost
Zone 10a around Lake Havasu City has about 18 weeks left before the first fall frost — that's the usual window to get a cold frame up if you want to keep harvesting past it.
The actual range around Lake Havasu City's last frost
01/05 is the middle of 30 years of NOAA records, not a promise. Plant by 02/03 and you're betting against frost in roughly 9 years out of 10. 12/17 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Lake Havasu City compares
About 365 days separate Lake Havasu City's last and first frost, putting it 778 of 40,283 ZIP codes nationally. Within AZ, it ranks 10 of 506.
Learn more
local microclimates explains what one yard in Lake Havasu City can differ from the 86403 normal, and zone vs. frost date explains why Zone 10a and Lake Havasu City's frost date answer different questions.