Frost dates / California / Palmdale
Frost dates in Palmdale, CA
The station on this page is PALMDALE, CA US (USC00046624), 0.7 miles from the city point. Population in the Census 2024 estimate is 162,536.
Zone 8bUSDA average annual extreme minimum 15°F to 20°F, from ZIP 93552 (4.5 miles from the city point used on this page).
Outside the median season Growing seasonTicks: 10%, 50%, and 90%
Last 32°F in spring
NCEI’s probability is the chance the last spring minimum of 32°F or lower occurs on or after the date.
| Probability | Date | How to read it |
|---|---|---|
| 90% | February 12 | Earlier date. A last 32°F on or after this day is common. |
| 50% | March 10 | Median. |
| 10% | April 11 | Later date. A last 32°F on or after this day is uncommon. |
First 32°F in fall
NCEI’s probability is the chance the first autumn minimum of 32°F or lower occurs on or before the date.
| Probability | Date | How to read it |
|---|---|---|
| 10% | November 3 | Earlier date. A first 32°F on or before this day is uncommon. |
| 50% | November 19 | Median. |
| 90% | December 4 | Later date. A first 32°F on or before this day is common. |
32°F growing-season length
Days between the last spring 32°F and the first autumn 32°F. The figure is a length the season meets or exceeds at that probability, from NCEI, not a subtraction done on this site.
| Probability the season is at least this long | Days |
|---|---|
| 10% | 282 |
| 50% | 248 |
| 90% | 216 |
28°F threshold
| 10% | 50% | 90% | |
|---|---|---|---|
| Last, on or after | March 17 | February 13 | January 14 |
| First, on or before | November 15 | December 1 | December 23 |
| Season at least | 328 days | 292 days | 251 days |
36°F threshold
| 10% | 50% | 90% | |
|---|---|---|---|
| Last, on or after | April 26 | April 5 | March 11 |
| First, on or before | October 24 | November 7 | November 21 |
| Season at least | 238 days | 213 days | 190 days |
Station PALMDALE, CA US (USC00046624). Completeness flag S, 24 years used for the 32°F dates. NCEI’s annual probability of at least one day at or below 32°F is 100%. Freeze dates are conditional on that threshold occurring. Elevation 796.1 m. The same probability language applies to the 28°F and 36°F rows when those dates passed the same quality checks.
Planting calendar for Palmdale · Zone 8b
Check a crop against this station
Palmdale, CA
Zone 8bAverage annual extreme minimum 15°F to 20°F
Outside the median season Growing seasonTicks: 10%, 50%, and 90%
California. Nearest qualified station: PALMDALE, CA US (USC00046624), 0.7 miles. Median last 32°F March 10. Median first 32°F November 19. The 50% growing-season length is 248 days.
Open the ZIP page · Crop guides for California
32°F probabilities at this station
| 10% | 50% | 90% | |
|---|---|---|---|
| Last 32°F on or after | April 11 | March 10 | February 12 |
| First 32°F on or before | November 3 | November 19 | December 4 |
Column order matches the NCEI file: for the last freeze, 10% is the later date and 90% is the earlier date. How to read the probabilities.
Planting calendar
Windows below are from UC ANR, UC Master Gardener Program, Time of planting, retrieved 2026-10-10. North and North Coast = Monterey County north; South Coast = San Luis Obispo County south; Interior Valleys = Sacramento, San Joaquin, and similar valleys; Desert Valleys = Imperial and Coachella Valleys. Source line on the page: California Master Gardener Handbook, Table 13.2, Adapted from Vegetable Gardening Illustrated 1994.
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