Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Wallis enjoys a temperate climate with an average annual temperature of 69°F (21°C). Winters average 53°F in January while summers reach 84°F in July. The area gets 319 sunny days per year, well above the U.S. average of 205 / making it one of the sunnier locations in the country. Air quality is rated Good with a median AQI of 42. The city sits at an elevation of 128 feet.
Temperature
53°F Jan (12°C)84°F Jul (29°C)
Annual Average
69.4°F
29% above US avg
January Average
53°F (12°C)
July Average
84°F (29°C)
Sunny Days
319 days/yr
Geography
Elevation
128 ft (39 m)
Area
1.5 sq mi (3.9 km²)
Population Density
1,038/sq mi
Coordinates
29.6320°N, 96.0635°W
Timezone
America/Chicago
County
Austin County County
Nearest Airport
Sugar Land Regional (SGR) 24 miles away
Precipitation & Snow
Wettest Month (Sep)4.92"
Driest Month (Mar)2.32"
Air Quality
AQI Median
42.0
Rating
Good
Natural Hazard Risk
Overall Risk
Relatively Low
Risk Score
53.2 / 100
Social Vulnerability
63.2 / 100
Community Resilience
39.2 / 100
Hazard Breakdown
Tornado
Relatively Moderate
Hurricane
Relatively Low
Earthquake
Very Low
Wildfire
Very Low
Flood
Relatively Low
Hail
Relatively Low
Strong Wind
Relatively Moderate
Heat Wave
Relatively Low
Winter Weather
Very Low
Lightning
Relatively Low
Ice Storm
Relatively Low
Drought
Relatively Moderate
Cold Wave
Relatively Low
Landslide
Very Low
Source: FEMA National Risk Index v1.20 (Dec 2025)
Earthquake History
18 earthquakes (M2.5+) recorded within 150 km since 1990.
Strongest on record: M3.1.
Feb 19, 2015
3 km N of Hallettsville, Texas
M3.1
87 km
5 km
May 12, 2019
18 km N of Yorktown, Texas
M3.1
147 km
5 km
Feb 3, 2019
13 km ESE of Smiley, Texas
M3.0
148 km
5 km
Jan 1, 2024
18 km S of Gonzales, Texas
M3.0
137 km
3 km
Mar 4, 2019
11 km SE of Cuero, Texas
M3.0
130 km
5 km
May 17, 2019
12 km ESE of Smiley, Texas
M2.9
147 km
7 km
Aug 19, 2022
11 km E of Smiley, Texas
M2.9
147 km
7 km
Oct 20, 2017
5 km W of Flatonia, Texas
M2.9
106 km
3 km
Jun 16, 2022
17 km E of Smiley, Texas
M2.8
141 km
7 km
Jan 4, 1995
1 km NW of Hallettsville, Texas
M2.7
88 km
5 km
Jul 22, 2023
13 km ENE of Smiley, Texas
M2.6
144 km
7 km
Aug 24, 2021
3 km NNW of Hallettsville, Texas
M2.6
87 km
5 km
Apr 2, 2024
4 km SSW of Round Top, Texas
M2.5
76 km
17 km
Apr 29, 2021
17 km E of Smiley, Texas
M2.5
141 km
8 km
Jul 6, 2022
17 km E of Smiley, Texas
M2.5
141 km
7 km
May 4, 2019
14 km ESE of Smiley, Texas
M2.5
146 km
4 km
May 5, 2019
14 km ESE of Smiley, Texas
M2.5
146 km
7 km
May 15, 2019
12 km ESE of Smiley, Texas
M2.5
147 km
7 km
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Hurricane History
15 hurricanes (Category 1+) recorded within 500 km since 1980.
Strongest on record: Category 4.
Year
Name
Category
Max Wind
Closest
2024
Beryl
Category 1
92 mph
37 km
2021
Nicholas
Category 1
75 mph
99 km
2020
Laura
Category 4
150 mph
268 km
2020
Delta
Category 3
115 mph
261 km
2020
Hanna
Category 1
81 mph
282 km
2017
Harvey
Category 4
132 mph
159 km
2008
Ike
Category 2
109 mph
112 km
2007
Humberto
Category 1
92 mph
150 km
2005
Rita
Category 3
121 mph
212 km
2003
Claudette
Category 1
92 mph
141 km
1989
Chantal
Category 1
81 mph
161 km
1989
Jerry
Category 1
86 mph
114 km
1986
Bonnie
Category 1
86 mph
173 km
1985
Juan
Category 1
86 mph
299 km
1983
Alicia
Category 3
115 mph
55 km
Source: NOAA IBTrACS (Category 1+, 1980–2026).
Tornado History
728 tornadoes (EF0+) recorded within 100 km since 1950.
Strongest on record: EF4. Total: 20 fatalities, 539 injuries.
Date
Rating
Distance
Path
Fatalities
Nov 21, 1992
EF4
77 km
30.0 mi
0
Dec 28, 2024
EF3
91 km
10.3 mi
0
Jan 24, 2023
EF3
79 km
23.3 mi
0
Feb 5, 1986
EF3
66 km
5.0 mi
2
Dec 13, 1977
EF3
77 km
25.1 mi
1
Mar 8, 1976
EF3
68 km
12.7 mi
0
Dec 24, 1975
EF3
80 km
1.0 mi
0
Sep 13, 1974
EF3
31 km
3.6 mi
0
Sep 8, 1969
EF3
82 km
0.8 mi
0
Dec 12, 1968
EF3
98 km
6.2 mi
0
Sep 20, 1967
EF3
26 km
19.9 mi
0
Sep 20, 1967
EF3
79 km
2.0 mi
0
Sep 20, 1967
EF3
26 km
19.9 mi
0
Sep 20, 1967
EF3
77 km
0.1 mi
0
Apr 18, 1966
EF3
86 km
2.0 mi
0
Mar 28, 1966
EF3
33 km
9.3 mi
0
Feb 9, 1966
EF3
94 km
2.0 mi
0
Sep 22, 1965
EF3
73 km
0.8 mi
0
Apr 19, 1965
EF3
21 km
0.2 mi
1
Nov 22, 1961
EF3
26 km
2.0 mi
0
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).
Wildfire History
20 wildfires (100+ acres) recorded within 100 km.
Largest: RILEY ROAD (18,999 acres, 2011).
Year
Name
Acres Burned
Distance
2011
RILEY ROAD
18,999
71 km
2017
TXTMR FY17 RX WHARTON
5,175
99 km
2011
DYER MILL
5,170
76 km
2010
WHARTON
5,084
100 km
2009
CHOCOLATE BAYOU UNIT
3,790
97 km
2020
CHOCOLATE BAYOU
3,623
97 km
1997
MOUND
3,402
100 km
2009
ROAD PASTURE 2009
3,197
95 km
2011
BAILEY
3,136
42 km
2006
CATTAILS
3,046
99 km
2023
TXBRR-FY23-RX-W
2,511
98 km
2017
TXTMR FY17 RX BLUESTEM
2,462
96 km
2019
TXTMR-FY19-RX-ALLIGATOR MARSH
2,435
98 km
2020
BLUESTEM 1
2,417
96 km
2022
HOT BLUE STEM
2,398
96 km
2024
BLUE STEM 24
2,328
96 km
2001
WHARTON HO
2,263
99 km
2011
LUTHERHILL
2,215
84 km
2016
2016 CRAWFISH BURN
2,105
98 km
2013
UNNAMED
2,070
96 km
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
Month
Avg Temperature
Precipitation
Summary
January
53°F (12°C)
3.0 in
Coldest
February
54°F (12°C)
2.7 in
March
61°F (16°C)
2.3 in
Driest
April
68°F (20°C)
2.8 in
May
75°F (24°C)
4.8 in
June
80°F (27°C)
4.3 in
July
84°F (29°C)
3.0 in
Warmest
August
83°F (28°C)
3.3 in
September
80°F (26°C)
4.9 in
Wettest
October
71°F (22°C)
3.8 in
November
61°F (16°C)
3.6 in
December
54°F (12°C)
3.0 in
Wallis has a seasonal temperature swing of 31°F / from 53°F in January to 84°F in July. Total annual precipitation is 41.6 inches, with September being the wettest month (4.9") and March the driest (2.3").