FORECAST CITY
Sign in
Shaded-relief map of San Lorenzo, Puerto Rico: rivers, roads, the city limits and where the water drains.
PUERTO RICO · SAN LORENZO MUNICIPIO

San Lorenzo

8,664 people, 340 ft above sea level in San Lorenzo Municipio.

340 ftElevation, city center
8,664People, 2024 estimate
2 sq miLand area
Clear 86°
Clear now Dew point 74° · SE 7 mph · high 83°
City of San Lorenzo River Interstate 2 miles
Explore the plate Order a print

The San Lorenzo 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 San Lorenzo

NWS forecast and National Blend of Models · updated 6:00 PM AST
RIGHT NOW Luis Munoz Marin International Airport (TJSJ) · 5:56 PM
Clear
86° Clear Feels like 94° · high of 83° near 6 PM
WindSE 7 mphno gusts
Humidity67%rising to 85% by morning
Pressure29.97 in →steady
Visibility10 mihaze-free
CloudsClear
UV index—no forecast
Dew point 74° · Oppressiveabout the same for three days
DryComfortableStickyMuggyOppressive
NEXT RAIN
Partly cloudy
Tuesday, about 3 AMin about 56 hours · 75% chance · showers
LIKELY AMOUNT0–0.02 inmost likely 0; 1 in 10 over 0.07
LAST RAINNov. 90.06 in · 5 dry days
ALERTS & OUTLOOKS
No watches or warnings for San Lorenzo Municipio
NWS San Juan and the Storm Prediction Center · checked 6:47 PM
SUN & MOON
↑ 6:29 AM5:47 PM ↓
11 h 17 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
partly cloudy night
mostly clear 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
partly cloudy day
partly cloudy night
partly cloudy night
partly cloudy night
showers night
showers day
showers day
showers day
showers day
TEMPERATURE °F
83°
79°
90°
78°
88°
80°
CHANCE OF RAIN
75% · 0.09 in Tuesday afternoon 50%
WIND, MPH
10
8
7
7
7
8
10
10
8
6
5
4
4
8
11
11
10
8
8
8
9
11
12
12
HOW IT FEELS · DEW POINT
Oppressive: dew points 72 to 75°

The next seven days, and how sure we are

Forecast, with the range 8 in 10 ensemble members agree on Normal, about 86° / 75°
SAT Nov. 14 Partly cloudy Partly cloudy
83° 79°
0% rain — SSE 9 A
SUN Nov. 15 Mostly cloudy; hot Mostly cloudy; hot
90° 78°
0% rain — SE 9 C
MON Nov. 16 Partly cloudy; hot Partly cloudy; hot
90° 79°
30% rain — E 9 A
TUE Nov. 17 Showers likely; hot Showers likely; hot
90° 78°
80% rain up to 0.2″ E 10 A
WED Nov. 18 Showers likely Showers likely
89° 77°
80% rain up to 0.2″ E 8 A
THU Nov. 19 Chance of showers; hot Chance of showers; hot
90° 77°
50% rain up to 0.05″ SE 7 A
FRI Nov. 20 Chance of showers; hot Chance of showers; hot
90° 77°
50% rain up to 0.05″ SE 6 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 San Lorenzo about 5,000 feet above the ground was over the tropical Atlantic three days ago, about 1,010 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 2003 Nov. 13–14, 2003

The wettest two days this week has seen

8.74 inches of rain fell in two days, the most for this week of the year since records began in 1931. The next wettest, 4.10 inches, fell in 2020.

4.10″
8.74″
20202003
Source: NOAA RCC-ACIS, the Juncos 1 SE record since 1931.
MILE2
THE GROUND

What San Lorenzo stands on

San Lorenzo’s center stands about 340 ft above sea level. Within three miles the land runs from 230 ft to 1,020 ft, a difference of 790 ft: hilly country. The highest named summit within 15 miles is El Toro, about 3,450 ft, 11 miles east-northeast.

San Lorenzo, cut in half from southwest to northeast

A section southwest to northeast, 24 miles through the town center
0 ft1,000 ft2,000 ft SAN LORENZO340 ftCerro La Santa2,940 ftJagual670 ftJuncos230 ftBenítez1,300 ft ← SWPalma Sola · NE →

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

San Lorenzo’s year

1991–2020 normals · records since 1931 · Juncos 1 SE, 5 mi northeast

San Lorenzo has a tropical rainforest climate. Summer afternoons average 88° in June; winter nights fall to about 65° in January. About 68 inches of rain fall in a normal year.

82°65°83°65°84°65°85°68°86°71°88°72°88°72°88°72°88°72°87°71°85°69°83°66° JANFEBMARAPRMAYJUNJULAUGSEPOCTNOVDEC 1 TODAY SAN LORENZO 67.5 in rain a year
Normal high to low, by month Record high to low, by day Rain by month
June, average88° / 72°high / low, the warmest month
January, average82° / 65°high / low, the coldest month
Rain a year67.5 inwettest months: September and November
Hottest on record100°FJuly 16, 1954
Coldest on record43°FDecember 12, 1991
Wettest day on record15.1 inSeptember 19, 2022
90° days a year103none reach 100°
Climate typeTropical rainforestKöppen Af

AROUND THE RING

1Wettest stretchSeptember through November: 24.0 of the year’s 67.5 inches
NOVEMBER 14 IN THE RECORD

On November 14 San Lorenzo normally reaches 85° and falls to 69°. The record high is 93°, in 1952; the record low 57°, in 1944. The most rain on this date, 2.81 in, fell in 2003.

MONTH BY MONTH
JanFebMarAprMayJunJulAugSepOctNovDec
Normal high82°83°84°85°86°88°88°88°88°87°85°83°
Normal low65°65°65°68°71°72°72°72°72°71°69°66°
Rain, inches3.272.482.864.786.395.247.047.228.737.607.694.17
Record high96° (1951)95° (1954)94° (2010)96° (2024)97° (1939)96° (1999)100° (1954)98° (1954)99° (1954)97° (1954)96° (1981)98° (1947)
Record low50° (1980)50° (1949)50° (1981)50° (1981)50° (1950)58° (1981)57° (1936)58° (1933)56° (1981)55° (1944)51° (1959)43° (1991)

Normals 1991–2020 and records since 1931 at Juncos 1 SE, 5 miles northeast, 130 ft lower. NOAA, through RCC-ACIS.

MILE7
ON THE NETWORK

Around San Lorenzo on the Forecast Network

Neighboring plates

San Juan PR · 16 MI 16 miles northwest Bayamón PR · 19 MI 19 miles northwest Ponce PR · 45 MI 45 miles west Mayagüez PR · 77 MI 77 miles west
FORECASTCITY
Map of San Lorenzo, Puerto Rico. Explore the plate
PUERTO RICO · SAN LORENZO

San Lorenzo

8,664 people, 340 ft above sea level in San Lorenzo Municipio.

340 ftElevation
8,664People
2 sq miLand
Clear 86°
ClearDew point 74°
1

Today in San Lorenzo

NEXT 15 HOURS
Now partly cloudy night 83° 0%
9p partly cloudy night 83° 0%
12a partly cloudy night 82° 0%
3a partly cloudy night 80° 0%
6a mostly cloudy night 79° 0%
9a mostly cloudy day 85° 0%
Partly cloudy
NEXT RAINTuesday about 3 AM · 75%
→
Sat0%
Partly cloudy Partly cloudy
79
83
A
Sun0%
Mostly cloudy; hot Mostly cloudy; hot
78
90
C
Mon30%
Partly cloudy; hot Partly cloudy; hot
79
90
A
Tue80%
Showers likely; hot Showers likely; hot
78
90
A
Wed80%
Showers likely Showers likely
77
89
A
Thu50%
Chance of showers; hot Chance of showers; hot
77
90
A
Fri50%
Chance of showers; hot Chance of showers; hot
77
90
A
Letters show how sure the forecast is: A, models agree; B, some spread; C, check back. Sample data.
THIS WEEK IN 2003 · NOV. 13–14, 2003

8.74 inches in two days, the most for this week since 1931.

2

What San Lorenzo stands on

San Lorenzo’s center stands about 340 ft above sea level. Within three miles the land runs from 230 ft to 1,020 ft, a difference of 790 ft: hilly country. The highest named summit within 15 miles is El Toro, about 3,450 ft, 11 miles east-northeast.

San Lorenzo, southwest to northeast San Lorenzo340 ftCerro La Santa2,940 ft ← SWNE → 24 miles through the town center; vertical exaggeration about 14×.
Elevation, center340 ft
Within 3 miles230 to 1,020 ft
Lie of the landHilly (790 ft of relief)
High point nearbyEl Toro, 3,450 ft, 11 mi east-northeast
5

San Lorenzo’s year

San Lorenzo has a tropical rainforest climate. Summer afternoons average 88° in June; winter nights fall to about 65° in January. About 68 inches of rain fall in a normal year.

JANFEBMARAPRMAYJUNJULAUGSEPOCTNOVDEC 1 67.5 in
June, average88° / 72° · high / low, the warmest month
January, average82° / 65° · high / low, the coldest month
Rain a year67.5 in · wettest months: September and November
Hottest on record100°F · July 16, 1954
Coldest on record43°F · December 12, 1991
Wettest day on record15.1 in · September 19, 2022
90° days a year103 · none reach 100°
Climate typeTropical rainforest · Köppen Af
1Wettest stretch · September through November: 24.0 of the year’s 67.5 inches
NOVEMBER 14 IN THE RECORD

On November 14 San Lorenzo normally reaches 85° and falls to 69°. The record high is 93°, in 1952; the record low 57°, in 1944. The most rain on this date, 2.81 in, fell in 2003.

Normals 1991–2020 and records since 1931 at Juncos 1 SE, 5 miles northeast, 130 ft lower. NOAA, through RCC-ACIS.