Frost dates for Phoenix Deer Valley Muni Ap, Arizona
Half of years have their last spring frost by January 8 — but 1 year in 10 still frosts after February 12.
Every other site gives you one date. A frost date is not a date: it is a percentile from 30 years of records at a nearby weather station, and planting to the median means losing the crop in half of years. Both numbers are below, so you can choose the risk yourself.
The odds
Last spring frost
- Frost this late in 1 year in 10
- February 12
- 1 year in 5
- February 1
- 3 years in 10
- January 23
- 2 years in 5
- January 14
- Half of years (the median)
- January 8
First fall freeze
- Freeze this early in 1 year in 10
- December 5
- 1 year in 5
- December 11
- 3 years in 10
- December 15
- 2 years in 5
- December 20
- Half of years (the median)
- December 25
- Growing season
- about 354 days
- Hardiness zones nearby
- 10a, 9b
Where these numbers come from
NOAA NCEI 1991–2020 Climate Normals, station Phoenix Deer Valley Muni Ap (USW00003184), at 33.69, -112.08. These are that station's own records, unshifted. The further your garden is from it, the less exactly they describe your ground — the planner resolves the nearest station to your own ZIP and lowers its confidence with distance, rather than presenting one number as if it were measured in your yard.
Cold air also pools in low ground on the clear, still nights when frost happens, so a hollow can freeze while a slope a hundred metres away does not. No table can know that about your garden. Your own logged frosts eventually can.
ZIP codes nearest this station
85012, 85013, 85014, 85016, 85018, 85020, 85021, 85022, 85023, 85024, 85027, 85028, 85029, 85032, 85050, 85051, 85053, 85083, 85085, 85086, 85087, 85251, 85253, 85254, 85301, 85302, 85303, 85304, 85306, 85307, 85308, 85310, 85335, 85345, 85351, 85363, 85373, 85381, 85382, 85383.
What can I plant here, and when? →
Nearby stations
The nearest stations, and how their last-frost dates compare — the frost gradient across your area, which no single station shows.
- Laveen 3 Sse, AZ — last frost by January 14
- Chandler Heights Hcn, AZ — last frost by February 1
- Las Vegas Air Terminal, NV — last frost by January 24
- Alpine, CA — last frost by February 12
- Lake Arrowhead, CA — last frost by May 5
- Vista, CA — last frost by January 30