USDA Hardiness Zone 12b
Frost Dates for 00727 — Caguas, Puerto Rico
NOAA 1991–2020 normals from Gurabo Substn, PR (160 ft), 3 miles northeast.
Updated
No night at or below 32°F was recorded at Gurabo Substn, PR in 1991–2020, not even 36°F, so Caguas has no frost dates to plan around; the coolest month, February, averages a low of 61°F.
- Winters with a freeze
- 0%
- Winters with 36°F
- 0%
- Coldest month low
- 61°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 Caguas
Gurabo Substn, PR, 3 miles northeast of Caguas, 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 Gurabo Substn, 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 00727 →Compare Caguas with another place →
Weather by month in Caguas
August is the warmest month at Gurabo Substn, PR, averaging 91°F by day and 71°F at night; February is the coldest at 85°F and 61°F. Not one month recorded a 32°F night; the lowest monthly average low is 61°F.
Warmth for growing adds up to 10,006 growing degree days a year (base 50°F), fewer than at 68% of the 25 Puerto Rico stations. 47% of them (4,720) have built up by the end of June, and August adds the most, 952. Precipitation totals 64.7 inches a year, most in September (8.7") and least in February (2.6"); May to September bring 49% of it.
| Month | High °F | Low °F | Precip. in | 32°F night | Nights ≤ 32°F | GDD 50°F |
|---|---|---|---|---|---|---|
| Jan | 85 | 62 | 3.7 | 0% | 0 | 718 |
| Feb | 85 | 61 | 2.6 | 0% | 0 | 645 |
| Mar | 86 | 63 | 3.9 | 0% | 0 | 758 |
| Apr | 88 | 66 | 4.2 | 0% | 0 | 795 |
| May | 89 | 69 | 5.4 | 0% | 0 | 896 |
| Jun | 90 | 70 | 3.8 | 0% | 0 | 908 |
| Jul | 90 | 70 | 5.9 | 0% | 0 | 930 |
| Aug | 91 | 71 | 8.2 | 0% | 0 | 952 |
| Sep | 90 | 70 | 8.7 | 0% | 0 | 908 |
| Oct | 90 | 69 | 7.0 | 0% | 0 | 910 |
| Nov | 88 | 67 | 7.0 | 0% | 0 | 819 |
| Dec | 85 | 64 | 4.3 | 0% | 0 | 769 |
Monthly normals 1991–2020 at Gurabo Substn, PR (160 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, Trujillo Alto 2 SSW, PR, 7 miles north of Caguas, has no 32°F night on record either, and a coolest-month low 6°F warmer (67°F).
Where these figures come from
ZIP 00727 is 3 miles from Gurabo Substn, PR, which stands at 160 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 00725 (Caguas). The 2023 USDA Plant Hardiness Zone Map lists ZIP 00727 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.