USDA Hardiness Zone 13a
Frost Dates for 00714 — Arroyo, Puerto Rico
NOAA 1991–2020 normals from Guayama 2E, PR (72 ft), 2 miles west.
Updated
No night at or below 32°F was recorded at Guayama 2E, PR in 1991–2020, not even 36°F, so Arroyo has no frost dates to plan around; the coolest month, February, averages a low of 72°F.
- Winters with a freeze
- 0%
- Winters with 36°F
- 0%
- Coldest month low
- 72°F
- Hardiness zone
- 13a
32°F or below, 1991–2020
frost possible on leaves
average, February
60 to 65°F (15.6 to 18.3°C) coldest night
Frost risk by date in Arroyo
Guayama 2E, PR, 2 miles west of Arroyo, 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 Guayama 2E, 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 00714 →Compare Arroyo with another place →
Weather by month in Arroyo
August is the warmest month at Guayama 2E, PR, averaging 90°F by day and 77°F at night; February is the coldest at 86°F and 72°F. Not one month recorded a 32°F night; the lowest monthly average low is 72°F.
Warmth for growing adds up to 11,433 growing degree days a year (base 50°F), the most of the 25 Puerto Rico stations. 48% of them (5,470) have built up by the end of June, and August adds the most, 1,045. Precipitation totals 54.5 inches a year, most in September (7.3") and least in February (1.7"); May to September bring 55% of it.
| Month | High °F | Low °F | Precip. in | 32°F night | Nights ≤ 32°F | GDD 50°F |
|---|---|---|---|---|---|---|
| Jan | 85 | 72 | 2.4 | 0% | 0 | 888 |
| Feb | 86 | 72 | 1.7 | 0% | 0 | 801 |
| Mar | 86 | 72 | 1.9 | 0% | 0 | 896 |
| Apr | 87 | 74 | 2.8 | 0% | 0 | 909 |
| May | 88 | 76 | 5.3 | 0% | 0 | 986 |
| Jun | 89 | 77 | 4.6 | 0% | 0 | 990 |
| Jul | 90 | 78 | 5.5 | 0% | 0 | 1042 |
| Aug | 90 | 77 | 7.1 | 0% | 0 | 1045 |
| Sep | 90 | 77 | 7.3 | 0% | 0 | 1002 |
| Oct | 89 | 76 | 7.2 | 0% | 0 | 1012 |
| Nov | 88 | 75 | 5.9 | 0% | 0 | 941 |
| Dec | 87 | 73 | 2.8 | 0% | 0 | 922 |
Monthly normals 1991–2020 at Guayama 2E, PR (72 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, Aguirre, PR, 11 miles west of Arroyo, has no 32°F night on record either, and a coolest-month low 6°F colder (66°F).
Where these figures come from
ZIP 00714 is 2 miles from Guayama 2E, PR, which stands at 72 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. 3 other ZIP codes share the station; its figures are presented in full for 00784 (Guayama). The 2023 USDA Plant Hardiness Zone Map lists ZIP 00714 in zone 13a, the band where the coldest night of the year averaged 60 to 65°F (15.6 to 18.3°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.