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

Lajas

4,471 people, 180 ft above sea level in Lajas Municipio.

180 ftElevation, city center
4,471People, 2024 estimate
1 sq miLand area
Clear 84°
Clear now Dew point 66° · N 5 mph · high 84°
City of Lajas River Interstate 2 miles
Explore the plate Order a print

The Lajas 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 Lajas

NWS forecast and National Blend of Models · updated 6:00 PM AST
RIGHT NOW Mercedita Airport (TJPS) · 6:35 PM
Clear
84° Clear Feels like 87° · high of 84° near 6 PM
WindN 5 mphno gusts
Humidity55%rising to 85% by morning
Pressure29.97 in →steady
Visibility10 mihaze-free
CloudsClear
UV index—no forecast
Dew point 66° · Muggy79° by Saturday: more humid
DryComfortableStickyMuggyOppressive
NEXT RAIN
Mostly cloudy
Tomorrow, about 6 AMin about 11 hours · 36% chance · rain
LIKELY AMOUNT—amounts come within 3 days
LAST RAINNov. 90.07 in · 5 dry days
ALERTS & OUTLOOKS
No watches or warnings for Lajas Municipio
NWS San Juan and the Storm Prediction Center · checked 6:47 PM
SUN & MOON
↑ 6:33 AM5:51 PM ↓
11 h 18 m of daylight, 1 minute less than yesterday
Waxing crescent, 26% lit. Next full moon: Nov. 24.
AIR & POLLEN
59
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
6p
9p
Mid
3a
6a
9a
Noon
3p
6p
9p
Mid
3a
6a
9a
Noon
3p
6p
9p
Mid
3a
6a
9a
Noon
3p
mostly clear night
mostly cloudy night
partly cloudy night
mostly cloudy night
mostly cloudy day
mostly cloudy day
mostly cloudy day
partly cloudy day
partly cloudy night
partly cloudy night
partly cloudy night
partly cloudy night
partly cloudy day
partly cloudy day
partly cloudy day
showers day
showers night
partly cloudy night
partly cloudy night
partly cloudy night
partly cloudy day
partly cloudy day
partly cloudy day
showers day
TEMPERATURE °F
84°
81°
88°
78°
89°
77°
CHANCE OF RAIN
55% · 0.00 in Tuesday afternoon 50%
WIND, MPH
15
14
14
13
13
14
14
13
9
8
8
8
7
8
9
8
6
7
7
7
7
7
8
8
HOW IT FEELS · DEW POINT
Oppressive: dew points 72 to 79°

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
84° 80°
10% rain — SE 14 A
SUN Nov. 15 Chance of showers Chance of showers
89° 77°
40% rain — ESE 14 A
MON Nov. 16 Chance of showers; hot Chance of showers; hot
90° 77°
50% rain up to 0.09″ ESE 8 A
TUE Nov. 17 Chance of showers; hot Chance of showers; hot
90° 77°
60% rain — ENE 7 A
WED Nov. 18 Showers likely Showers likely
89° 77°
60% rain up to 0.08″ E 8 A
THU Nov. 19 Chance of storms Chance of storms
89° 78°
40% rain — E 9 A
FRI Nov. 20 Chance of showers Chance of showers
89° 78°
30% rain — E 8 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 Lajas 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, THREE YEARS AGO Nov. 14, 2023

The hottest this week has been

94° on Nov. 14, 2023, the hottest reading for this week of the year since 1900. Next is 94° in 2024.

94°
94°
20242023
Source: NOAA RCC-ACIS, the Lajas Substation record since 1900.
MILE2
THE GROUND

What Lajas stands on

Lajas’s center stands about 180 ft above sea level. Within three miles the land runs from 30 ft to 690 ft, a difference of 660 ft: hilly country. The highest named summit within 15 miles is Pico Santa Ana, about 2,950 ft, 9 miles northeast.

Lajas, cut in half from southwest to northeast

A section southwest to northeast, 24 miles through the town center
0 ft1,000 ft2,000 ft LAJAS180 ftCerro Mariquita890 ftMaguayo40 ftSan Germán620 ftPico Santa Ana2,950 ft ← SWNE →

Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 7×.

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

Lajas’s year

1991–2020 normals · records since 1900 · Lajas Substation

Lajas has a tropical savanna climate. Summer afternoons average 92° in July; winter nights fall to about 62° in January. About 45 inches of rain fall in a normal year.

87°62°87°62°87°63°88°66°90°69°91°70°92°70°92°70°91°70°91°70°89°67°88°64° JANFEBMARAPRMAYJUNJULAUGSEPOCTNOVDEC 12 TODAY LAJAS 44.9 in rain a year
Normal high to low, by month Record high to low, by day Rain by month
July, average92° / 70°high / low, the warmest month
January, average87° / 62°high / low, the coldest month
Rain a year44.9 inwettest months: October and September
Hottest on record103°FJuly 10, 1998
Coldest on record44°FJanuary 14, 1992
Wettest day on record12.3 inSeptember 17, 1975
90° days a year197none reach 100°
Climate typeTropical savannaKöppen Aw

AROUND THE RING

1Highs of 90° and upMay 13 to Nov. 11; normal highs reach 90°
2Wettest stretchSeptember through November: 17.6 of the year’s 44.9 inches
NOVEMBER 14 IN THE RECORD

On November 14 Lajas normally reaches 89° and falls to 68°. The record high is 94°, in 2023; the record low 60°, in 2005. The most rain on this date, 6.45 in, fell in 2003.

MONTH BY MONTH
JanFebMarAprMayJunJulAugSepOctNovDec
Normal high87°87°87°88°90°91°92°92°91°91°89°88°
Normal low62°62°63°66°69°70°70°70°70°70°67°64°
Rain, inches2.212.292.523.274.422.193.504.875.666.345.642.00
Record high96° (1986)94° (1984)99° (2026)95° (2024)95° (1999)99° (1997)103° (1998)99° (2021)98° (1997)97° (2024)98° (2011)98° (2011)
Record low44° (1992)51° (2005)50° (1951)50° (1953)56° (1974)55° (1986)53° (1994)58° (2011)59° (2019)56° (1996)50° (2018)49° (1996)

Normals 1991–2020 and records since 1900 at Lajas Substation, here. NOAA, through RCC-ACIS.
MILE7
ON THE NETWORK

Around Lajas on the Forecast Network

Neighboring plates

Mayagüez PR · 12 MI 12 miles northwest Ponce PR · 29 MI 29 miles east Bayamón PR · 63 MI 63 miles east Caguas PR · 68 MI 68 miles east San Juan PR · 70 MI 70 miles east Carolina PR · 75 MI 75 miles east
FORECASTCITY
Map of Lajas, Puerto Rico. Explore the plate
PUERTO RICO · LAJAS

Lajas

4,471 people, 180 ft above sea level in Lajas Municipio.

180 ftElevation
4,471People
1 sq miLand
Clear 84°
ClearDew point 66°
1

Today in Lajas

NEXT 15 HOURS
Now mostly clear night 84° 0%
9p partly cloudy night 84° 1%
12a partly cloudy night 84° 0%
3a mostly cloudy night 82° 0%
6a rain 81° 36%
9a mostly cloudy day 83° 0%
Mostly cloudy
NEXT RAINTomorrow about 6 AM · 36%
→
Sat10%
Partly cloudy Partly cloudy
80
84
A
Sun40%
Chance of showers Chance of showers
77
89
A
Mon50%
Chance of showers; hot Chance of showers; hot
77
90
A
Tue60%
Chance of showers; hot Chance of showers; hot
77
90
A
Wed60%
Showers likely Showers likely
77
89
A
Thu40%
Chance of storms Chance of storms
78
89
A
Fri30%
Chance of showers Chance of showers
78
89
A
Letters show how sure the forecast is: A, models agree; B, some spread; C, check back. Sample data.
THIS WEEK, THREE YEARS AGO · NOV. 14, 2023

94°, the hottest this week of the year has been since 1900.

2

What Lajas stands on

Lajas’s center stands about 180 ft above sea level. Within three miles the land runs from 30 ft to 690 ft, a difference of 660 ft: hilly country. The highest named summit within 15 miles is Pico Santa Ana, about 2,950 ft, 9 miles northeast.

Lajas, southwest to northeast Lajas180 ftCerro Mariquita890 ftPico Santa Ana2,950 ft ← SWNE → 24 miles through the town center; vertical exaggeration about 13×.
Elevation, center180 ft
Within 3 miles30 to 690 ft
Lie of the landHilly (660 ft of relief)
High point nearbyPico Santa Ana, 2,950 ft, 9 mi northeast
5

Lajas’s year

Lajas has a tropical savanna climate. Summer afternoons average 92° in July; winter nights fall to about 62° in January. About 45 inches of rain fall in a normal year.

JANFEBMARAPRMAYJUNJULAUGSEPOCTNOVDEC 12 44.9 in
July, average92° / 70° · high / low, the warmest month
January, average87° / 62° · high / low, the coldest month
Rain a year44.9 in · wettest months: October and September
Hottest on record103°F · July 10, 1998
Coldest on record44°F · January 14, 1992
Wettest day on record12.3 in · September 17, 1975
90° days a year197 · none reach 100°
Climate typeTropical savanna · Köppen Aw
1Highs of 90° and up · May 13 to Nov. 11; normal highs reach 90°
2Wettest stretch · September through November: 17.6 of the year’s 44.9 inches
NOVEMBER 14 IN THE RECORD

On November 14 Lajas normally reaches 89° and falls to 68°. The record high is 94°, in 2023; the record low 60°, in 2005. The most rain on this date, 6.45 in, fell in 2003.

Normals 1991–2020 and records since 1900 at Lajas Substation, here. NOAA, through RCC-ACIS.