Guaynabo, Weather & Growing Conditions
Today
86°F
Scattered Rain Showers
Scattered rain showers before 3pm, then scattered showers and thunderstorms. Partly sunny, with a high near 86. East wind 12 to 15 mph. Chance of precipitation is 50%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 86°F | Scattered Rain Showers | 12 to 15 mph E | 50% |
| Tonight | 74°F | Scattered Rain Showers | 3 to 10 mph ESE | 40% |
| Wednesday | 88°F | Scattered Rain Showers | 5 to 14 mph ESE | 40% |
| Wednesday Night | 74°F | Isolated Rain Showers | 6 to 12 mph ESE | 20% |
| Thursday | 87°F | Sunny then Isolated Rain Showers | 6 to 14 mph ESE | 20% |
| Thursday Night | 74°F | Isolated Rain Showers | 3 to 9 mph ESE | 10% |
| Friday | 86°F | Isolated Rain Showers | 5 to 13 mph E | 20% |
| Friday Night | 74°F | Isolated Rain Showers | 5 to 9 mph E | 20% |
| Saturday | 88°F | Isolated Rain Showers then Sunny | 6 to 13 mph E | 7% |
| Saturday Night | 75°F | Isolated Rain Showers | 6 to 9 mph E | 10% |
| Sunday | 89°F | Scattered Rain Showers then Mostly Sunny | 7 to 15 mph E | 30% |
| Sunday Night | 75°F | Clear | 5 to 9 mph E | 0% |
| Monday | 88°F | Isolated Rain Showers then Sunny | 7 to 15 mph E | 9% |
| Monday Night | 75°F | Isolated Rain Showers | 5 to 10 mph E | 8% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Guaynabo,
Growing season
365 days
Explore more for Guaynabo, : full frost dates · planting calendar
Climate data from the nearest NOAA station, Rio Piedras Exp Stn, Pr Rq (6.5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.