Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Olivarez has a warm climate with an average annual temperature of 75°F (24°C). Winters average 61°F in January while summers reach 86°F in July. The area gets 312 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 25.7 inches (drier than the 38-inch national average). Air quality is rated Good with a median AQI of 42. The city sits at an elevation of 69 feet.
Temperature
61°F Jan (16°C)86°F Jul (30°C)
Annual Average
75.0°F
39% above US avg
January Average
61°F (16°C)
July Average
86°F (30°C)
Sunny Days
312 days/yr
Geography
Elevation
69 ft (21 m)
Area
3.7 sq mi (9.6 km²)
Population Density
1,779/sq mi
Coordinates
26.2285°N, 97.9931°W
Timezone
America/Chicago
County
Willacy County County
Nearest Airport
Mc Allen International (MFE) 13 miles away
Precipitation & Snow
Annual Rainfall25.7"
32% below US avg
Wettest Month (Sep)4.96"
Driest Month (Mar)0.67"
Air Quality
AQI Median
42.0
Rating
Good
Natural Hazard Risk
Overall Risk
Relatively Low
Risk Score
77.5 / 100
Social Vulnerability
95.0 / 100
Community Resilience
3.7 / 100
Hazard Breakdown
Tornado
Very Low
Hurricane
Relatively Moderate
Earthquake
Very Low
Wildfire
Very Low
Flood
Very Low
Hail
Relatively Low
Strong Wind
Very Low
Heat Wave
Relatively Low
Winter Weather
Very Low
Lightning
Relatively Moderate
Ice Storm
Relatively Low
Drought
Relatively High
Cold Wave
Relatively High
Landslide
Very Low
Coastal Flood
Very Low
Source: FEMA National Risk Index v1.20 (Dec 2025)
Earthquake History
4 earthquakes (M2.5+) recorded within 150 km since 1990.
Strongest on record: M4.1.
Jan 19, 2014
12 km SSW of China, Mexico
M4.1
148 km
12 km
Feb 11, 2014
31 km SSE of China, Mexico
M4.0
144 km
41 km
Mar 5, 2014
18 km SSW of China, Mexico
M3.9
150 km
10 km
Nov 26, 2013
22 km S of China, Mexico
M3.6
148 km
37 km
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Hurricane History
13 hurricanes (Category 1+) recorded within 500 km since 1980.
Strongest on record: Category 5.
Year
Name
Category
Max Wind
Closest
2024
Beryl
Category 1
92 mph
272 km
2021
Nicholas
Category 1
75 mph
265 km
2020
Hanna
Category 1
92 mph
41 km
2017
Harvey
Category 4
132 mph
194 km
2010
Alex
Category 2
109 mph
226 km
2008
Dolly
Category 2
98 mph
36 km
2005
Emily
Category 3
127 mph
148 km
2003
Claudette
Category 1
92 mph
285 km
2003
Erika
Category 1
75 mph
119 km
1999
Bret
Category 4
144 mph
80 km
1988
Gilbert
Category 4
132 mph
198 km
1983
Barry
Category 1
81 mph
105 km
1980
Allen
Category 5
161 mph
44 km
Source: NOAA IBTrACS (Category 1+, 1980–2026).
Tornado History
130 tornadoes (EF0+) recorded within 100 km since 1950.
Strongest on record: EF3. Total: 1 fatality, 39 injuries.
Date
Rating
Distance
Path
Fatalities
Mar 15, 1983
EF3
38 km
6.1 mi
0
May 12, 1969
EF3
42 km
0.1 mi
0
May 12, 1969
EF3
31 km
0.1 mi
0
Apr 19, 1965
EF3
62 km
1.5 mi
0
May 5, 1991
EF2
58 km
1.0 mi
0
Aug 9, 1980
EF2
53 km
4.6 mi
0
May 24, 1970
EF2
38 km
25.5 mi
0
May 12, 1969
EF2
64 km
0.1 mi
0
Apr 26, 1967
EF2
48 km
40.2 mi
0
Jun 1, 1962
EF2
34 km
1.0 mi
0
Jan 26, 1950
EF2
74 km
4.7 mi
0
May 13, 2023
EF1
75 km
0.5 mi
1
Oct 30, 2015
EF1
35 km
0.7 mi
0
Jun 30, 2011
EF1
24 km
0.4 mi
0
Jul 16, 2007
EF1
24 km
1.0 mi
0
Apr 30, 2003
EF1
46 km
0.3 mi
0
May 21, 2001
EF1
33 km
0.2 mi
0
May 21, 2001
EF1
34 km
0.1 mi
0
Apr 4, 1997
EF1
60 km
0.5 mi
0
Jun 14, 1994
EF1
49 km
0.5 mi
0
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).
Wildfire History
20 wildfires (100+ acres) recorded within 100 km.
Largest: BURNS RANCH FIRE (58,395 acres, 2008).
Year
Name
Acres Burned
Distance
2008
BURNS RANCH FIRE
58,395
58 km
2022
HAYFIELD SOUTH
11,038
66 km
2021
KING
9,793
75 km
2022
VIB
7,817
78 km
2017
HOPPER
7,150
99 km
2022
BLANKET
5,823
99 km
2022
POLO
5,571
71 km
2008
ENCINO
3,979
74 km
2021
NORTH JONES
3,541
97 km
2008
UNNAMED
3,389
97 km
2011
KING RANCH
3,075
60 km
2008
JONES RANCH
2,998
98 km
2009
HOPPER
2,929
97 km
2009
SAN CARLOS
2,849
77 km
2021
JONES
2,178
91 km
2010
ENCINITOS RANCH
1,967
70 km
2022
755
1,846
78 km
2011
ENCINITOS
1,748
70 km
2022
DEER
1,657
86 km
2009
STILLMAN
1,466
50 km
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
Month
Avg Temperature
Precipitation
Summary
January
61°F (16°C)
1.5 in
Coldest
February
62°F (17°C)
1.5 in
March
69°F (21°C)
0.7 in
Driest
April
75°F (24°C)
1.4 in
May
79°F (26°C)
3.0 in
June
83°F (28°C)
2.9 in
July
86°F (30°C)
2.1 in
Warmest
August
85°F (29°C)
2.5 in
September
82°F (28°C)
5.0 in
Wettest
October
75°F (24°C)
2.3 in
November
67°F (20°C)
1.3 in
December
61°F (16°C)
1.3 in
Olivarez has a seasonal temperature swing of 25°F / from 61°F in January to 86°F in July. Total annual precipitation is 25.4 inches, with September being the wettest month (5.0") and March the driest (0.7").