Frost dates / Florida / Port St. Lucie
Frost dates in Port St. Lucie, FL
The station on this page is STUART, FL US (USC00088620), 11.1 miles from the city point. Population in the Census 2024 estimate is 258,575.
Zone 10aUSDA average annual extreme minimum 30°F to 35°F, from ZIP 34953 (2.2 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% | January 4 | Earlier date. A last 32°F on or after this day is common. |
| 50% | January 23 | Median. |
| 10% | February 10 | 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% | January 1 | Earlier date. A first 32°F on or before this day is uncommon. |
| 50% | January 18 | Median. |
| 90% | February 9 | 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% | 365 |
| 50% | 365 |
| 90% | 347 |
36°F threshold
| 10% | 50% | 90% | |
|---|---|---|---|
| Last, on or after | February 17 | January 27 | January 3 |
| First, on or before | December 28 | January 17 | February 9 |
| Season at least | 365 days | 365 days | 330 days |
Station STUART, FL US (USC00088620). Completeness flag R, 26 years used for the 32°F dates. NCEI’s annual probability of at least one day at or below 32°F is 13.7%. Freeze dates are conditional on that threshold occurring. Elevation 4 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 Port St. Lucie · Zone 10a
Check a crop against this station
Port St. Lucie, FL
Zone 10aAverage annual extreme minimum 30°F to 35°F
Outside the median season Growing seasonTicks: 10%, 50%, and 90%
Florida. Nearest qualified station: STUART, FL US (USC00088620), 11.1 miles. Median last 32°F January 23. Median first 32°F January 18. The 50% growing-season length is 365 days.
Open the ZIP page · Crop guides for Florida
32°F probabilities at this station
| 10% | 50% | 90% | |
|---|---|---|---|
| Last 32°F on or after | February 10 | January 23 | January 4 |
| First 32°F on or before | January 1 | January 18 | February 9 |
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 UF/IFAS, Florida Vegetable Gardening Guide (SP 103/VH021), retrieved 2026-10-10. North = all of Florida north of State Road 40; central = the section of Florida between State Roads 40 and 70; south = all of Florida below State Road 70.
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