Arroyo, Puerto Rico Weather

Arroyo Barrio-Pueblo10:13 AM AST17.97°N, 66.06°WElevation 23 ft

Current conditions

Isolated Rain Showers
86°
Isolated Rain Showers
Feels like 96°
High 88°·Low 78°
WindESE 6 mph
Humidity72%
Dew point76°
Pressure29.96 inHg
Visibility10.0 mi
Cloud cover30%
UV index7 High
Sunrise6:20 AM
Sunset5:58 PM

Observed at San Juan, Luis Munoz Marin International Airport · 1 hr ago

Forecast

10-day

  • Today

    Scattered rain showers before noon. Mostly sunny. High near 88, with temperatures falling to around 83 in the afternoon. East southeast wind 5 to 10 mph. Chance of precipitation is 30%. New rainfall amounts between a quarter and half of an inch possible.

  • Tonight

    A chance of showers and thunderstorms. Mostly cloudy, with a low around 78. East wind around 6 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

  • Friday

    Scattered rain showers. Mostly sunny. High near 88, with temperatures falling to around 84 in the afternoon. East wind 7 to 10 mph. Chance of precipitation is 30%.

National Weather Service forecast updated 6 hrs ago.

Hourly

Hourly forecast
  1. Now Isolated Rain Showers 86°10%
  2. 11 AM Isolated Rain Showers 87°10%
  3. 12 PM Sunny 88°0.04
  4. 1 PM Sunny 88°0.04
  5. 2 PM Sunny 88°0.04
  6. 3 PM Sunny 87°0.04
  7. 4 PM Sunny 85°0.04
  8. 5 PM Sunny 83°0.04
  9. 6 PM Chance Showers And Thunderstorms 82°70%
  10. 7 PM Chance Showers And Thunderstorms 82°70%
  11. 8 PM Chance Showers And Thunderstorms 81°70%
  12. 9 PM Chance Showers And Thunderstorms 81°60%
  13. 10 PM Chance Showers And Thunderstorms 80°60%
  14. 11 PM Chance Showers And Thunderstorms 80°60%
  15. Fri12 AM Scattered Rain Showers 79°40%
  16. 1 AM Scattered Rain Showers 79°40%
  17. 2 AM Scattered Rain Showers 79°40%
  18. 3 AM Scattered Showers And Thunderstorms 78°50%
  19. 4 AM Scattered Showers And Thunderstorms 78°50%
  20. 5 AM Scattered Showers And Thunderstorms 78°50%
  21. 6 AM Scattered Rain Showers 80°30%
  22. 7 AM Scattered Rain Showers 82°30%
  23. 8 AM Scattered Rain Showers 84°30%
  24. 9 AM Isolated Rain Showers 85°20%

10-day forecast

Details
  1. TodayOct 22 Scattered Rain Showers then Mostly Sunny Scattered Rain Showers then Mostly Sunny70%78°88°
  2. FriOct 23 Scattered Rain Showers Scattered Rain Showers70%79°88°
  3. SatOct 24 Chance Showers And Thunderstorms Chance Showers And Thunderstorms60%79°88°
  4. SunOct 25 Scattered Showers And Thunderstorms Scattered Showers And Thunderstorms50%78°88°
  5. MonOct 26 Scattered Rain Showers Scattered Rain Showers40%78°88°
  6. TueOct 27 Scattered Rain Showers Scattered Rain Showers30%77°89°
  7. WedOct 28 Isolated Rain Showers Isolated Rain Showers20%78°89°
  8. ThuOct 29 Partly cloudy Partly cloudy75°87°
  9. FriOct 30 Partly cloudy Partly cloudy0.02 in75°87°
  10. SatOct 31 Showers Showers0.11 in76°86°

Days after the National Weather Service's seven are MET Norway's outlook, a computer model with no forecaster's review.

Radar

Full map
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Weather news near Arroyo

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Air quality

41
Good
Fine particles (PM2.5)

Air quality is satisfactory, and air pollution poses little or no risk.

Catano, PR reporting area · 2 hrs ago. Data from AirNow (EPA and its state, local and tribal partners); preliminary and subject to change.

Sun & moon

Sunrise 6:20 AM
Sunset 5:58 PM
Daylight 11 h 38 min (−0 min 56 s tomorrow)
Waxing Gibbous · 85% lit
Moonrise 3:31 PM Moonset 2:59 AM
Full moon Oct 26 New moon Nov 9

Almanac

Monthly
Normal high / low89° / 76°
Record high95° (1957)
Record low65° (1957)
Wettest1.45 in (1986)
Month to date3.94 in (normal 4.95 in)

Guayama 1sw, records since 1914. Normals 1991–2020. Data from NOAA's Regional Climate Centers (ACIS).

Nearby

Forecasters' discussion

From the National Weather Service office in SJU, issued 8 hrs ago

Key Messages

Issued at 200 AM AST Thu Oct 22 2026

* A wetter pattern today through Saturday will bring more frequent showers and thunderstorms, including nighttime activity. Heavy downpours may cause urban and small-stream flooding, rapid river rises, and isolated flash flooding. Repeated rainfall will also increase the potential for landslides along vulnerable slopes.

* A moderate risk of rip currents will persist along exposed northern beaches today. Another northerly swell arriving early Friday will bring a renewed high risk along northern Puerto Rico, with dangerous rip currents potentially continuing through the weekend and into early next week.

* Warm and humid conditions will continue, particularly during periods of sunshine. Heat impacts may become more pronounced Sunday and Monday, especially across coastal and urban areas and among individuals sensitive to heat.

Aviation

(06Z TAFS) Issued at 200 AM AST Thu Oct 22 2026

Mainly VFR conds expected, with VCSH at TJPS/TIST/TISX overnight into the morning as moisture increases from the S. SHRA/TSRA developing over interior and northern PR aft 22/17Z may produce periods of MVFR and brief IFR cigs/vsbys with direct +RA/TSRA passage at TJBQ and possibly TJSJ, with TJBQ impacts favored later in the 22/17-23Z period. Brief MVFR vsbys also psbl with passing SHRA at USVI terminals. Sfc winds L/V overnight, bcmg ESE-SE at 8-10 kt aft 22/13Z, with sea-breeze variations and locally gusty winds near TSRA.

Marine

Issued at 200 AM AST Thu Oct 22 2026

Light to gentle southeasterly winds will become east to southeast and increase to moderate to locally fresh speeds Friday into the weekend as the pressure gradient tightens. The current northerly swell will continue to subside today before another north- northwesterly swell arrives early Friday, followed by additional pulses through the weekend. Seas will build to 5 to 6 feet across portions of the Atlantic waters and Mona Passage, generally remaining below Small Craft Advisory criteria, although small craft should exercise caution. More frequent showers and thunderstorms, including nighttime activity, will bring lightning, gusty winds, reduced visibility, and locally higher seas.

Beach Forecast

Issued at 200 AM AST Thu Oct 22 2026

Subsiding northerly swell will allow a moderate risk of rip currents today along exposed beaches of northern and northwestern Puerto Rico, Culebra, St. Thomas, and St. John. Another north- northwesterly swell arriving early Friday will bring a renewed high risk along northern Puerto Rico, where breaking waves around 6 feet are forecast Friday and Saturday. Additional swell pulses may maintain dangerous rip currents through the weekend and into early next week. Increasing shower and thunderstorm activity will also bring lightning and gusty winds to coastal areas. Beachgoers should avoid swimming where the rip current risk is high and seek shelter indoors when thunderstorms approach.

Forecasts, observations and alerts in the United States come from the National Weather Service (NOAA); radar from NOAA's Multi-Radar Multi-Sensor system; satellite imagery from NASA's Global Imagery Browse Services (GIBS) and NOAA's GOES satellites; the map from the U.S. Geological Survey's National Map; air quality from AirNow (EPA and its partners); hurricane information from the National Hurricane Center; climate normals and records from NOAA's Regional Climate Centers (ACIS). Forecasts outside the United States and the UV index: MET Norway (CC BY 4.0); observations outside the U.S.: airport reports via NOAA's Aviation Weather Center. Place names: GeoNames (CC BY 4.0). Data are copied on a schedule and may lag the sources; for warnings that affect your safety, follow your local National Weather Service office and emergency officials. Weather news is drawn from the 4Conservative index and reflects what the press published. Terms of use.