USDA Hardiness Zone 12b
Frost Dates for 00731 — Ponce, Puerto Rico
NOAA 1991–2020 normals from Ponce 4 E, PR (70 ft), 7 miles southeast.
Updated
No night at or below 32°F was recorded at Ponce 4 E, PR in 1991–2020, not even 36°F, so Ponce has no frost dates to plan around; the coolest month, February, averages a low of 62°F.
- Winters with a freeze
- 0%
- Winters with 36°F
- 0%
- Coldest month low
- 62°F
- Hardiness zone
- 12b
32°F or below, 1991–2020
frost possible on leaves
average, February
55 to 60°F (12.8 to 15.6°C) coldest night
Frost risk by date in Ponce
Ponce 4 E, PR, 7 miles southeast of Ponce, did not record a night at or below 32°F in 1991–2020. All 25 other Puerto Rico stations behind this site's ZIP pages recorded no 32°F night either.
Freeze probabilities 1991–2020 at Ponce 4 E, PR, from NOAA NCEI U.S. Climate Normals. Where a temperature is reached in fewer than 99.5% of years, the dates describe only the years that reach it. Not a forecast.
Frost risk on any date in 00731 →Compare Ponce with another place →
Weather by month in Ponce
August is the warmest month at Ponce 4 E, PR, averaging 92°F by day and 69°F at night; February is the coldest at 88°F and 62°F. Not one month recorded a 32°F night; the lowest monthly average low is 62°F.
Warmth for growing adds up to 10,175 growing degree days a year (base 50°F), fewer than at 56% of the 25 Puerto Rico stations. 48% of them (4,836) have built up by the end of June, and August adds the most, 947. Precipitation totals 37.6 inches a year, most in September (6.9") and least in January (0.7"); May to September bring 55% of it.
| Month | High °F | Low °F | Precip. in | 32°F night | Nights ≤ 32°F | GDD 50°F |
|---|---|---|---|---|---|---|
| Jan | 88 | 63 | 0.7 | 0% | 0 | 780 |
| Feb | 88 | 62 | 1.2 | 0% | 0 | 697 |
| Mar | 88 | 63 | 1.9 | 0% | 0 | 777 |
| Apr | 89 | 65 | 2.3 | 0% | 0 | 801 |
| May | 90 | 67 | 4.2 | 0% | 0 | 876 |
| Jun | 91 | 69 | 2.2 | 0% | 0 | 906 |
| Jul | 92 | 69 | 2.8 | 0% | 0 | 939 |
| Aug | 92 | 69 | 4.6 | 0% | 0 | 947 |
| Sep | 91 | 69 | 6.9 | 0% | 0 | 902 |
| Oct | 91 | 68 | 5.4 | 0% | 0 | 910 |
| Nov | 90 | 66 | 3.9 | 0% | 0 | 837 |
| Dec | 88 | 64 | 1.5 | 0% | 0 | 804 |
Monthly normals 1991–2020 at Ponce 4 E, PR (70 ft), NOAA NCEI. "32°F night": chance of at least one in the month. GDD: growing degree days, base 50°F.
Compared with the next station
The nearest other station, Adjuntas Substn, PR, 14 miles northwest of Ponce and 1,760 feet higher, has no 32°F night on record either, and a coolest-month low 6°F colder (56°F).
Where these figures come from
ZIP 00731 is 7 miles from Ponce 4 E, PR, which stands at 70 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. 9 other ZIP codes share the station; its figures are presented in full for 00795 (Juana Diaz). The 2023 USDA Plant Hardiness Zone Map lists ZIP 00731 in zone 12b, the band where the coldest night of the year averaged 55 to 60°F (12.8 to 15.6°C) over 1991–2020; a zone describes winter lows, not frost dates.
Frost dates across Puerto Rico →
Hardiness zone and temperature range: USDA Plant Hardiness Zone Map 2023 (USDA-ARS, Oregon State University), ZIP-code listing, unchanged. °C converted from °F by this site.
Thirty-year averages, not a forecast: check the forecast before planting out. How stations are matched and which pages are offered to search engines: methodology.