When to plant in Lake Havasu City, AZ
USDA Zone 10aHere are the average frost dates, USDA hardiness zone, and a month-by-month planting calendar for Lake Havasu City, Arizona — all computed from Lake Havasu City's nearest NOAA weather station.
With about 358 frost-free days, Lake Havasu City supports back-to-back plantings; stagger sowings every few weeks to keep beds productive spring through fall. In zone 10a, frost is a minor factor for Lake Havasu City — most perennials thrive, and annual vegetables can go out early and stay late.
Frost probability
LAKE HAVASU CITY · 1991–2020The date the last spring and first fall frost occur, by threshold and probability. A 90% date is later in spring — and earlier in fall — than a 10% date; the 50% · 32°F row is what most gardeners plan around. These are Lake Havasu City’s own odds, recorded at LAKE HAVASU CITY.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | Feb 19 | Jan 25 | Dec 30 | Dec 1 | Dec 17 | Jan 6 |
| 32°F | Feb 3 | Jan 5 | Dec 17 | Dec 9 | Dec 29 | Jan 24 |
Download this table as CSV ↓ — every threshold and probability, plus this city’s planting-window dates.
What to plant now
TODAY · JULY 19Nothing new to sow or transplant outdoors in the next few weeks — a seasonal lull. Check the full-year calendar below for the next window.
Full-year planting calendar
Each bar is the exact window to take a planting action in Lake Havasu City, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 38 km · complete 32°F normalsWhen stations disagree by more than a few days, that spread is real microclimate variation — elevation, water, urban heat. Judge which station best matches your own yard.
Lake Havasu City planting FAQ
When is the last spring frost in Lake Havasu City, AZ?
On average, the last spring frost in Lake Havasu City is around January 5 (50% probability at 32°F, from 1991–2020 NOAA normals). Wait until after this date to set out tender plants like tomatoes and peppers.
When is the first fall frost in Lake Havasu City, AZ?
The first fall frost in Lake Havasu City typically arrives around December 29 (50% probability at 32°F). Harvest or protect frost-sensitive crops before then.
What hardiness zone is Lake Havasu City in?
Lake Havasu City is in USDA hardiness zone 10a. In zone 10a, winters are mild — many tender perennials overwinter here.
How long is the growing season in Lake Havasu City?
Lake Havasu City has about 358 frost-free days — a long growing season — between the average last spring frost (January 5) and first fall frost (December 29).
When should I plant tomatoes in Lake Havasu City?
For Lake Havasu City, sow tomatoes indoors about November 10–November 24 and move the seedlings out around January 12, after the last spring frost.
Never miss a window in Lake Havasu City
An email when it’s time to start seeds, transplant, and sow — timed to Lake Havasu City’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Fort Mohave · 61 km
- Bullhead City · 73 km
- Kingman · 84 km
- New Kingman-Butler · 89 km
- Blythe · 98 km
- Boulder City · 159 km
- Twentynine Palms · 166 km
- Prescott · 171 km
Frost dates recorded at LAKE HAVASU CITY, 5 km from the city center · 1991–2020 NOAA climate normals · zone from the USDA/PRISM 2023 map. How we compute this.
BlissGarden. "When to Plant in Lake Havasu City, AZ — Frost Dates & Zone 10a." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00024761. Retrieved from https://blissgarden.com/arizona/lake-havasu-city.