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Shaded-relief map of Guayanilla, Puerto Rico: rivers, roads, the city limits and where the water drains.
PUERTO RICO · GUAYANILLA MUNICIPIO

Guayanilla

3,178 people, 50 ft above sea level in Guayanilla Municipio.

50 ftElevation, city center
3,178People, 2024 estimate
1 sq miLand area
Sunny 86°
Sunny now Dew point -26° · ESE 8 mph · high 82°
City of Guayanilla River Interstate 2 miles
Explore the plate Order a print

The Guayanilla plate. Relief from Copernicus GLO-30; rivers and lakes from USGS NHD; watersheds from the USGS Watershed Boundary Dataset; roads and city limits from Census TIGER 2024.

MILE1
TODAY

Today in Guayanilla

NWS forecast and National Blend of Models · updated 5:00 PM AST
RIGHT NOW Mercedita Airport (TJPS) · 5:35 PM
Sunny
86° Sunny Feels like 83° · high of 82° near 5 PM
WindESE 8 mphgusts 15
Humidity1%rising to 88% by morning
Pressure29.95 in →steady
Visibility7 mihazy
CloudsClear
UV index—no forecast
Dew point -26° · Dry77° by Saturday: more humid
DryComfortableStickyMuggyOppressive
NEXT RAIN
Mostly cloudy
Tomorrow, about 4 AMin about 10 hours · 31% chance · rain
LIKELY AMOUNT—amounts come within 3 days
LAST RAINNov. 130.4 in · 1 dry day
ALERTS & OUTLOOKS
No watches or warnings for Guayanilla Municipio
NWS San Juan and the Storm Prediction Center · checked 5:47 PM
SUN & MOON
↑ 6:32 AM5:50 PM ↓
11 h 18 m of daylight, 1 minute less than yesterday
Waxing crescent, 26% lit. Next full moon: Nov. 24.
AIR & POLLEN
52
MODERATEAir quality index · fine particles
No pollen source yet.

The next three days, hour by hour

Sky: clear, cloudy, night Rain likely National Blend of Models
SATURDAY, NOV. 14
SUNDAY, NOV. 15
MONDAY, NOV. 16
TUESDAY, NOV. 17
5p
8p
11p
2a
5a
8a
11a
2p
5p
8p
11p
2a
5a
8a
11a
2p
5p
8p
11p
2a
5a
8a
11a
2p
partly cloudy night
partly cloudy night
mostly cloudy night
mostly cloudy night
mostly cloudy night
mostly cloudy day
mostly cloudy day
partly cloudy day
partly cloudy night
partly cloudy night
partly cloudy night
partly cloudy night
partly cloudy night
partly cloudy day
partly cloudy day
partly cloudy day
partly cloudy night
partly cloudy night
partly cloudy night
partly cloudy night
partly cloudy night
showers day
showers day
showers day
TEMPERATURE °F
82°
78°
89°
75°
90°
75°
CHANCE OF RAIN
60% · 0.00 in Tuesday afternoon 50%
WIND, MPH
9
9
9
8
8
9
10
9
7
6
6
6
6
7
9
10
8
7
7
7
7
7
9
11
HOW IT FEELS · DEW POINT
Oppressive: dew points 69 to 77°

The next seven days, and how sure we are

Forecast, with the range 8 in 10 ensemble members agree on Normal, about 80° / 62°
SAT Nov. 14 Partly cloudy Partly cloudy
82° 77°
20% rain — SE 9 A
SUN Nov. 15 Chance of showers Chance of showers
89° 75°
30% rain — ESE 9 A
MON Nov. 16 Partly cloudy; hot Partly cloudy; hot
91° 75°
30% rain — ESE 8 A
TUE Nov. 17 Showers likely; hot Showers likely; hot
91° 77°
60% rain — ENE 8 A
WED Nov. 18 Storms likely; hot Storms likely; hot
90° 75°
60% rain up to 0.05″ E 7 A
THU Nov. 19 Chance of showers Chance of showers
89° 76°
50% rain — E 8 A
FRI Nov. 20 Chance of showers Chance of showers
89° 76°
30% rain — E 7 A
How sure are we? AModels agree: highs within 4° BSome spread: within 8° CWide spread: check back
Range from the National Blend of Models percentiles · graded on Forecast Scores
AIR MAIL

Where today’s air came from

The air arriving over Guayanilla about 5,000 feet above the ground was over the tropical Atlantic three days ago, and over the Caribbean a day ago, about 950 miles back along its path. Air off the water carries moisture, which is why it feels humid. Traced back 72 hours through NOAA’s hourly RAP analyses and the GFS beyond them, nine paths at each of three heights.

THIS WEEK IN 1984 Nov. 12, 1984

The coldest this week has been

65° on Nov. 12, 1984, the coldest reading for this week of the year since 1959. Next is 66° in 1985.

66°
65°
19851984
Source: NOAA RCC-ACIS, the Magueyes Island record since 1959.
MILE2
THE GROUND

What Guayanilla stands on

Guayanilla’s center stands about 50 ft above sea level. Within three miles the land runs from 0 ft to 770 ft, a difference of 770 ft: hilly country. Open water lies within three miles. The highest named summit within 15 miles is Monte Guilarte, about 3,910 ft, 8 miles north.

Guayanilla, cut in half from south to north

A section south to north, 24 miles through the town center
0 ft1,000 ft2,000 ft3,000 ft GUAYANILLA50 ftCerro La Tuna940 ftHigh point of the line3,450 ft ← SN →

Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 6×.

Heights from Copernicus GLO-90 (a surface model: it includes buildings and tree canopy); summits from USGS GNIS; rivers from USGS NHDPlus HR.
MILE5
THE ALMANAC

Guayanilla’s year

1991–2020 normals · records since 1959 · Magueyes Island, 17 mi west-southwest

Guayanilla has a tropical savanna climate. Summer afternoons average 91° in August; winter nights fall to about 69° in February. About 42 inches of rain fall in a normal year.

86°70°86°69°86°70°87°72°88°75°90°76°90°76°91°76°90°76°90°75°88°73°88°70° JANFEBMARAPRMAYJUNJULAUGSEPOCTNOVDEC 12 TODAY GUAYANILLA 42.5 in rain a year
Normal high to low, by month Record high to low, by day Rain by month
August, average91° / 76°high / low, the warmest month
February, average86° / 69°high / low, the coldest month
Rain a year42.5 inwettest months: October and September
Hottest on record103°FOctober 11, 2005
Coldest on record50°FFebruary 12, 2004
Wettest day on record13.9 inSeptember 17, 1975
Climate typeTropical savannaKöppen Aw

AROUND THE RING

1Highs of 90° and upJune 8 to Oct. 26; normal highs reach 90°
2Wettest stretchSeptember through November: 16.8 of the year’s 42.5 inches
NOVEMBER 14 IN THE RECORD

On November 14 Guayanilla normally reaches 88° and falls to 73°. The record high is 93°, in 2011; the record low 66°, in 1985. The most rain on this date, 2.05 in, fell in 2016.

MONTH BY MONTH
JanFebMarAprMayJunJulAugSepOctNovDec
Normal high86°86°86°87°88°90°90°91°90°90°88°88°
Normal low70°69°70°72°75°76°76°76°76°75°73°70°
Rain, inches1.931.862.713.574.072.542.674.325.536.265.061.96
Record high92° (1996)93° (1978)95° (1992)96° (1986)97° (1978)97° (1978)100° (2004)98° (1979)101° (1995)103° (2005)95° (2024)94° (2009)
Record low60° (1975)50° (2004)60° (2009)58° (2000)59° (2005)67° (1985)66° (1994)62° (2020)61° (2020)66° (1985)62° (2000)60° (2018)

Normals 1991–2020 and records since 1959 at Magueyes Island, 17 miles west-southwest. NOAA, through RCC-ACIS.
MILE7
ON THE NETWORK

Around Guayanilla on the Forecast Network

Neighboring plates

Ponce PR · 11 MI 11 miles east Mayagüez PR · 26 MI 26 miles northwest Bayamón PR · 48 MI 48 miles northeast Caguas PR · 51 MI 51 miles east San Juan PR · 55 MI 55 miles northeast Carolina PR · 60 MI 60 miles northeast
FORECASTCITY
Map of Guayanilla, Puerto Rico. Explore the plate
PUERTO RICO · GUAYANILLA

Guayanilla

3,178 people, 50 ft above sea level in Guayanilla Municipio.

50 ftElevation
3,178People
1 sq miLand
Sunny 86°
SunnyDew point -26°
1

Today in Guayanilla

NEXT 15 HOURS
Now partly cloudy day 82° 0%
8p partly cloudy night 82° 0%
11p mostly cloudy night 81° 0%
2a mostly cloudy night 79° 0%
5a rain 78° 31%
8a mostly cloudy day 82° 0%
Mostly cloudy
NEXT RAINTomorrow about 4 AM · 31%
→
Sat20%
Partly cloudy Partly cloudy
77
82
A
Sun30%
Chance of showers Chance of showers
75
89
A
Mon30%
Partly cloudy; hot Partly cloudy; hot
75
91
A
Tue60%
Showers likely; hot Showers likely; hot
77
91
A
Wed60%
Storms likely; hot Storms likely; hot
75
90
A
Thu50%
Chance of showers Chance of showers
76
89
A
Fri30%
Chance of showers Chance of showers
76
89
A
Letters show how sure the forecast is: A, models agree; B, some spread; C, check back. Sample data.
THIS WEEK IN 1984 · NOV. 12, 1984

65°, the coldest this week of the year has been since 1959.

2

What Guayanilla stands on

Guayanilla’s center stands about 50 ft above sea level. Within three miles the land runs from 0 ft to 770 ft, a difference of 770 ft: hilly country. Open water lies within three miles. The highest named summit within 15 miles is Monte Guilarte, about 3,910 ft, 8 miles north.

Guayanilla, south to north Guayanilla50 ftCerro La Tuna940 ft ← SN → 24 miles through the town center; vertical exaggeration about 11×.
Elevation, center50 ft
Within 3 miles0 to 770 ft
Lie of the landHilly (770 ft of relief)
High point nearbyMonte Guilarte, 3,910 ft, 8 mi north
5

Guayanilla’s year

Guayanilla has a tropical savanna climate. Summer afternoons average 91° in August; winter nights fall to about 69° in February. About 42 inches of rain fall in a normal year.

JANFEBMARAPRMAYJUNJULAUGSEPOCTNOVDEC 12 42.5 in
August, average91° / 76° · high / low, the warmest month
February, average86° / 69° · high / low, the coldest month
Rain a year42.5 in · wettest months: October and September
Hottest on record103°F · October 11, 2005
Coldest on record50°F · February 12, 2004
Wettest day on record13.9 in · September 17, 1975
Climate typeTropical savanna · Köppen Aw
1Highs of 90° and up · June 8 to Oct. 26; normal highs reach 90°
2Wettest stretch · September through November: 16.8 of the year’s 42.5 inches
NOVEMBER 14 IN THE RECORD

On November 14 Guayanilla normally reaches 88° and falls to 73°. The record high is 93°, in 2011; the record low 66°, in 1985. The most rain on this date, 2.05 in, fell in 2016.

Normals 1991–2020 and records since 1959 at Magueyes Island, 17 miles west-southwest. NOAA, through RCC-ACIS.