Harman US

Guayanilla, Weather & Growing Conditions

This Afternoon
92°F
Chance Showers And Thunderstorms
Scattered rain showers before 3pm, then a chance of showers and thunderstorms. Partly sunny. High near 92, with temperatures falling to around 86 in the afternoon. Heat index values as high as 103. East southeast wind 7 to 10 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

7-day forecast

WhenTempForecastWindPrecip
This Afternoon 92°F Chance Showers And Thunderstorms 7 to 10 mph ESE 60%
Tonight 74°F Scattered Showers And Thunderstorms then Partly Cloudy 6 mph ENE 50%
Wednesday 92°F Isolated Rain Showers 3 to 13 mph ESE 20%
Wednesday Night 76°F Scattered Rain Showers then Partly Cloudy 8 mph E 30%
Thursday 90°F Sunny then Isolated Rain Showers 6 to 13 mph ESE 9%
Thursday Night 75°F Clear 5 to 8 mph E 1%
Friday 91°F Sunny then Isolated Rain Showers 5 to 13 mph E 5%
Friday Night 75°F Mostly Clear 3 to 8 mph E 2%
Saturday 93°F Sunny 6 to 12 mph ESE 0%
Saturday Night 77°F Mostly Clear 5 to 9 mph E 2%
Sunday 94°F Sunny then Isolated Rain Showers 7 to 15 mph ESE 6%
Sunday Night 77°F Clear 5 to 12 mph E 0%
Monday 95°F Sunny then Isolated Rain Showers 5 to 15 mph ESE 20%
Monday Night 76°F Mostly Clear 5 to 10 mph E 4%

Forecast source: National Weather Service (api.weather.gov). Updated through the day.

Growing snapshot for Guayanilla,

Growing season
365 days

Explore more for Guayanilla, : full frost dates · planting calendar

Climate data from the nearest NOAA station, Adjuntas Substn, Pr Rq (9.3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.