Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Hillsboro enjoys a temperate climate with an average annual temperature of 66°F (19°C). Winters average 47°F in January while summers reach 84°F in July. The area gets 330 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 38.7 inches. Air quality is rated Good with a median AQI of 42. The city sits at an elevation of 646 feet.
Temperature
47°F Jan (8°C)84°F Jul (29°C)
Annual Average
66.1°F
22% above US avg
January Average
47°F (8°C)
July Average
84°F (29°C)
Sunny Days
330 days/yr
Geography
Elevation
646 ft (197 m)
Area
11.0 sq mi (28.4 km²)
Population Density
763/sq mi
Coordinates
32.0090°N, 97.1145°W
Timezone
America/Chicago
County
Johnson County County
Nearest Airport
Waco Regional (ACT) 28 miles away
Precipitation & Snow
Annual Rainfall38.7"
2% above US avg
Snowfall0.7"
Wettest Month (May)4.96"
Driest Month (Jan)1.85"
Air Quality
AQI Median
42.0
Rating
Good
Natural Hazard Risk
Overall Risk
Relatively Moderate
Risk Score
86.7 / 100
Social Vulnerability
23.2 / 100
Community Resilience
55.5 / 100
Hazard Breakdown
Tornado
Relatively High
Hurricane
Very Low
Earthquake
Very Low
Wildfire
Relatively Moderate
Flood
Relatively Moderate
Hail
Relatively Moderate
Strong Wind
Relatively Moderate
Heat Wave
Relatively Moderate
Winter Weather
Relatively Low
Lightning
Relatively Moderate
Ice Storm
Relatively Moderate
Drought
Relatively Low
Cold Wave
Relatively Moderate
Landslide
Very Low
Source: FEMA National Risk Index v1.20 (Dec 2025)
Earthquake History
88 earthquakes (M2.5+) recorded within 150 km since 1990.
Strongest on record: M4.0.
May 7, 2015
5 km N of Venus, Texas
M4.0
53 km
3 km
Dec 9, 2013
8 km S of Perrin, Texas
M3.7
138 km
5 km
Nov 28, 2013
6 km SSW of Perrin, Texas
M3.7
141 km
5 km
Nov 20, 2013
1 km NNW of Azle, Texas
M3.6
108 km
5 km
Jan 7, 2015
6 km NE of Irving, Texas
M3.6
96 km
5 km
Dec 8, 2013
0 km NNE of Sanctuary, Texas
M3.6
110 km
5 km
Jun 24, 2012
3 km SSE of Briaroaks, Texas
M3.5
54 km
5 km
Jan 6, 2015
4 km ENE of Irving, Texas
M3.5
94 km
6 km
Sep 30, 2012
4 km NW of Irving, Texas
M3.4
94 km
5 km
May 19, 2018
8 km NW of Venus, Texas
M3.4
53 km
5 km
Nov 25, 2013
3 km WNW of Sanctuary, Texas
M3.4
112 km
5 km
May 18, 2015
5 km N of Irving, Texas
M3.3
97 km
5 km
Jun 15, 2012
5 km SSE of Briaroaks, Texas
M3.3
53 km
5 km
Apr 2, 2015
5 km NNE of Irving, Texas
M3.3
96 km
8 km
May 16, 2009
5 km NNW of Grand Prairie, Texas
M3.3
88 km
9 km
Jan 18, 2012
9 km SSE of Godley, Texas
M3.3
54 km
5 km
May 1, 2024
7 km S of Mansfield, Texas
M3.2
54 km
6 km
May 3, 2015
4 km N of Irving, Texas
M3.2
95 km
5 km
Sep 30, 2012
1 km W of Irving, Texas
M3.1
91 km
5 km
Nov 29, 2013
1 km S of Pelican Bay, Texas
M3.1
107 km
5 km
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Hurricane History
2 hurricanes (Category 1+) recorded within 500 km since 1980.
Strongest on record: Category 2.
Year
Name
Category
Max Wind
Closest
2008
Ike
Category 2
98 mph
205 km
1983
Alicia
Category 2
92 mph
299 km
Source: NOAA IBTrACS (Category 1+, 1980–2026).
Tornado History
694 tornadoes (EF0+) recorded within 100 km since 1950.
Strongest on record: EF5. Total: 153 fatalities, 1,544 injuries.
Date
Rating
Distance
Path
Fatalities
May 6, 1973
EF5
55 km
10.6 mi
0
May 11, 1953
EF5
51 km
20.9 mi
114
May 15, 2013
EF4
75 km
2.5 mi
6
Apr 25, 1994
EF4
74 km
6.0 mi
3
May 26, 1976
EF4
33 km
18.8 mi
0
Mar 10, 1973
EF4
60 km
23.3 mi
6
Mar 31, 1959
EF4
20 km
10.4 mi
6
Apr 21, 1952
EF4
65 km
2.3 mi
0
Oct 20, 2019
EF3
97 km
15.8 mi
0
Dec 26, 2015
EF3
54 km
8.5 mi
0
May 15, 2013
EF3
45 km
7.8 mi
0
Apr 16, 2002
EF3
85 km
2.1 mi
0
May 12, 2000
EF3
27 km
7.0 mi
2
Mar 28, 2000
EF3
85 km
4.0 mi
2
Mar 28, 2000
EF3
80 km
8.0 mi
0
May 27, 1997
EF3
79 km
3.7 mi
0
May 27, 1997
EF3
99 km
1.4 mi
0
Apr 27, 1990
EF3
74 km
4.0 mi
0
Dec 13, 1984
EF3
91 km
10.0 mi
0
Oct 13, 1981
EF3
91 km
7.2 mi
0
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).
Wildfire History
16 wildfires (100+ acres) recorded within 100 km.
Largest: CRITTENBERG COMPLEX (21,391 acres, 2022).
Year
Name
Acres Burned
Distance
2022
CRITTENBERG COMPLEX
21,391
99 km
2022
BIG L
9,653
98 km
2022
CHALK MOUNTAIN
6,461
75 km
2011
BIG TRICKLE RANCH FIRE
3,623
58 km
2011
C#491
3,616
57 km
2008
UNNAMED
2,944
82 km
1993
UNNAMED
2,431
91 km
2018
FARMERS ROAD
2,383
93 km
2009
OWL CREEK
2,376
98 km
1996
UNNAMED
2,067
72 km
2005
200 MOUNTAIN RIDGE
2,051
74 km
2006
BROWNS CREEK RANGE
1,889
98 km
1992
UNNAMED
1,854
90 km
2009
UNNAMED
1,445
99 km
2023
DOUBLE BACK
1,275
65 km
2011
CEDAR RIDGE
1,051
31 km
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
Month
Avg Temperature
Precipitation
Summary
January
47°F (8°C)
1.9 in
Coldest, Driest
February
50°F (10°C)
2.4 in
March
58°F (14°C)
2.9 in
April
65°F (18°C)
3.3 in
May
73°F (23°C)
5.0 in
Wettest
June
80°F (27°C)
3.5 in
July
84°F (29°C)
1.9 in
Warmest
August
84°F (29°C)
2.0 in
September
77°F (25°C)
3.5 in
October
67°F (20°C)
3.7 in
November
56°F (13°C)
2.5 in
December
48°F (9°C)
2.2 in
Hillsboro has a seasonal temperature swing of 38°F / from 47°F in January to 84°F in July. Total annual precipitation is 34.8 inches, with May being the wettest month (5.0") and January the driest (1.9").