Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Juncos zona urbana has a warm climate with an average annual temperature of 78°F (25°C). Winters average 73°F in January while summers reach 81°F in July / relatively mild seasonal variation. The area gets 356 sunny days per year, well above the U.S. average of 205 / making it one of the sunnier locations in the country. Annual precipitation totals 40.0 inches. Air quality is rated Good with a median AQI of 21 / among the cleanest air in the country. The city sits at an elevation of 227 feet.
Temperature
73°F Jan (23°C)81°F Jul (27°C)
Annual Average
77.8°F
44% above US avg
January Average
73°F (23°C)
July Average
81°F (27°C)
Sunny Days
356 days/yr
Geography
Elevation
227 ft (69 m)
Area
1.5 sq mi (3.9 km²)
Population Density
5,951/sq mi
Coordinates
18.2258°N, 65.9159°W
Timezone
America/Puerto_Rico
County
Juncos Municipio County
Nearest Airport
Luis Munoz Marin International (SJU) 16 miles away
Precipitation & Snow
Annual Rainfall40.0"
5% above US avg
Snowfall0.0"
Wettest Month (Oct)9.37"
Driest Month (Feb)3.19"
Air Quality
AQI Median
21.0
Rating
Good
Earthquake History
20,777 earthquakes (M2.5+) recorded within 150 km since 1990.
Strongest on record: M6.4.
Jan 13, 2014
61 km N of Hatillo, Puerto Rico
M6.4
131 km
20 km
Jan 7, 2020
4 km SSE of Indios, Puerto Rico
M6.4
99 km
6 km
Jan 11, 2020
5 km SE of Maria Antonia, Puerto Rico
M5.9
104 km
5 km
May 16, 2010
4 km E of Moca, Puerto Rico
M5.8
123 km
113 km
Jan 6, 2020
14 km S of Indios, Puerto Rico
M5.8
104 km
6 km
Jan 7, 2020
0 km NW of Magas Arriba, Puerto Rico
M5.6
94 km
9 km
Jan 7, 2020
11 km S of Tallaboa, Puerto Rico
M5.6
93 km
10 km
Feb 4, 2008
Puerto Rico region
M5.5
137 km
15 km
May 2, 2020
6 km S of Tallaboa, Puerto Rico
M5.4
92 km
9 km
Nov 23, 1992
28 km NNW of San Antonio, Puerto Rico
M5.3
144 km
31 km
Jul 3, 2020
9 km SSE of La Parguera, Puerto Rico
M5.3
121 km
3 km
Aug 1, 1993
68 km SSE of Emajagua, Puerto Rico
M5.3
94 km
25 km
Jan 15, 2020
Puerto Rico region
M5.2
121 km
5 km
Jan 10, 2020
4 km S of Maria Antonia, Puerto Rico
M5.2
107 km
9 km
Jan 11, 2020
19 km S of Indios, Puerto Rico
M5.2
103 km
10 km
Sep 6, 2004
122 km NNE of Vieques, Puerto Rico
M5.1
146 km
14 km
Aug 14, 2009
92 km N of Suárez, Puerto Rico
M5.1
117 km
47 km
Mar 12, 2009
66 km N of Brenas, Puerto Rico
M5.1
105 km
15 km
Jan 7, 2020
14 km S of Tallaboa, Puerto Rico
M5.0
92 km
10 km
Feb 4, 2020
15 km SSE of Guánica, Puerto Rico
M5.0
110 km
7 km
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Hurricane History
25 hurricanes (Category 1+) recorded within 500 km since 1980.
Strongest on record: Category 5.
Year
Name
Category
Max Wind
Closest
2025
Erin
Category 5
161 mph
222 km
2024
Ernesto
Category 1
75 mph
230 km
2023
Tammy
Category 1
86 mph
291 km
2022
Fiona
Category 1
92 mph
111 km
2019
Dorian
Category 1
86 mph
87 km
2017
Maria
Category 5
173 mph
25 km
2017
Irma
Category 5
178 mph
93 km
2014
Gonzalo
Category 3
115 mph
213 km
2011
Irene
Category 1
86 mph
3 km
2010
Earl
Category 4
132 mph
166 km
2008
Omar
Category 4
132 mph
167 km
2004
Frances
Category 4
144 mph
243 km
2004
Jeanne
Category 1
81 mph
224 km
2000
Debby
Category 1
75 mph
84 km
1999
Lenny
Category 4
155 mph
150 km
1999
Jose
Category 1
75 mph
224 km
1998
Georges
Category 3
121 mph
19 km
1996
Bertha
Category 3
115 mph
97 km
1996
Hortense
Category 1
81 mph
93 km
1995
Luis
Category 4
144 mph
215 km
Source: NOAA IBTrACS (Category 1+, 1980–2026).
Tornado History
13 tornadoes (EF0+) recorded within 100 km since 1950.
Strongest on record: EF1. Total: 1 injury.
Date
Rating
Distance
Path
Fatalities
May 1, 2022
EF1
91 km
0.4 mi
0
Aug 30, 1974
EF1
9 km
2.0 mi
0
May 5, 1969
EF1
21 km
1.5 mi
0
Mar 16, 2023
EF0
7 km
0.3 mi
0
Sep 30, 2019
EF0
32 km
0.1 mi
0
Mar 26, 2017
EF0
21 km
0.4 mi
0
Nov 18, 2016
EF0
64 km
0.6 mi
0
Aug 25, 2000
EF0
40 km
1.0 mi
0
Feb 23, 2000
EF0
25 km
0.2 mi
0
Sep 8, 1999
EF0
13 km
0.1 mi
0
May 1, 1995
EF0
29 km
—
0
Oct 7, 1969
EF0
65 km
1.0 mi
0
Jul 28, 1959
EF0
88 km
0.2 mi
0
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).
Tsunami History
5 tsunamis recorded within 500 km.
Highest wave on record: 15.2 m (50 ft).
Year
Location
Cause
Max Wave
Deaths
Distance
1867
VIRGIN ISLANDS
Earthquake
15.2 m
24
97 km
1918
PUERTO RICO: MONA PASSAGE
Eruption + Earthquake
6.1 m
144
144 km
1868
VIRGIN ISLANDS
Earthquake
1.5 m
—
87 km
2020
PUERTO RICO
Earthquake
0.1 m
4
99 km
1918
PUERTO RICO
Earthquake
—
—
139 km
Source: NOAA/NCEI Historical Tsunami Database.
Wildfire History
6 wildfires (100+ acres) recorded within 100 km.
Largest: CAMPAMENTO SANTIAGO (3,927 acres, 2005).
Year
Name
Acres Burned
Distance
2005
CAMPAMENTO SANTIAGO
3,927
43 km
2007
UNNAMED
3,896
44 km
2005
UNNAMED
1,888
39 km
2005
PISTA DE SALINAS CARR 3
1,137
48 km
2005
UNNAMED
725
37 km
2013
PUERTO NEGRO
631
61 km
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
Month
Avg Temperature
Precipitation
Summary
January
73°F (23°C)
4.5 in
February
73°F (23°C)
3.2 in
Coldest, Driest
March
74°F (23°C)
3.6 in
April
75°F (24°C)
5.4 in
May
77°F (25°C)
8.7 in
June
79°F (26°C)
6.6 in
July
81°F (27°C)
7.2 in
Warmest
August
79°F (26°C)
8.9 in
September
79°F (26°C)
8.8 in
October
78°F (26°C)
9.4 in
Wettest
November
76°F (25°C)
7.9 in
December
74°F (23°C)
6.1 in
Juncos zona urbana has a seasonal temperature swing of 8°F / from 73°F in February to 81°F in July. Total annual precipitation is 80.3 inches, with October being the wettest month (9.4") and February the driest (3.2").