Sunnyvale, TX

Full City Profile · Texas · Rockwall County County

3.8 /5.0

B+ Good

8,069 Population 488/sq mi density

$157,500 Median Income $61,080 per capita

$540,500 Home Value $631,094 Zillow

$1,216 Median Rent 29.2% income on rent

66°F Avg Temperature 308 sunny days/yr

299 Violent Crime/100K 4,049 property/100K

B+

Overall

3.8 / 5.0

Good overall score based on economy, affordability, safety and education

Economy

4.4 / 5.0

$157,500 median income, 4.6% unemployment

A+

Affordability

4.8 / 5.0

$540,500 home value, $1,216/mo rent

Safety

1.0 / 5.0

299 violent crimes/100K

A+

Education

5.0 / 5.0

56.0% bachelor's degree or higher

Sunnyvale enjoys a temperate climate with an average annual temperature of 66°F (19°C). Winters average 46°F in January while summers reach 85°F in July. The area gets 308 sunny days per year. Annual precipitation totals 41.9 inches. Air quality is rated Good with a median AQI of 42.

Temperature

46°F Jan (8°C) 85°F Jul (29°C)

Annual Average	65.8°F
	22% above US avg
January Average	46°F (8°C)
July Average	85°F (29°C)
Sunny Days	308 days/yr

Geography

Elevation	494 ft (151 m)
Area	16.5 sq mi (42.8 km²)
Population Density	488/sq mi
Coordinates	32.7998°N, 96.5586°W
Timezone	America/Chicago
County	Rockwall County County
Nearest Airport	Dallas Love Field (DAL) 17 miles away

Precipitation & Snow

Annual Rainfall 41.9"

10% above US avg

Wettest Month (May) 5.20"

Driest Month (Jan) 2.05"

Air Quality

AQI Median	42.0
Rating	Good

Air Pollutants (EPA 2023)

Ozone (O₃)	0.0418 ppm

Natural Hazard Risk

Overall Risk	Relatively Low
Risk Score	70.7 / 100
Social Vulnerability	10.6 / 100
Community Resilience	86.3 / 100

Hazard Breakdown

Tornado	Relatively High
Hurricane	Very Low
Earthquake	Very Low
Wildfire	Relatively Low
Flood	Relatively Low
Hail	Relatively Moderate
Strong Wind	Relatively Moderate
Heat Wave	Relatively Moderate
Winter Weather	Relatively Low
Lightning	Relatively Low
Ice Storm	Relatively Low
Drought	Relatively Low
Cold Wave	Relatively Moderate
Landslide	Very Low

Source: FEMA National Risk Index v1.20 (Dec 2025)

Earthquake History

109 earthquakes (M2.5+) within 150 km since 1990. Strongest: M4.0. Most recent: M3.1 on May 1, 2024.

May 7, 2015	5 km N of Venus, Texas	M4.0	62 km
Dec 9, 2013	8 km S of Perrin, Texas	M3.7	141 km
Nov 28, 2013	6 km SSW of Perrin, Texas	M3.7	144 km
Jan 7, 2015	6 km NE of Irving, Texas	M3.6	32 km
Nov 20, 2013	1 km NNW of Azle, Texas	M3.6	94 km
Dec 8, 2013	0 km NNE of Sanctuary, Texas	M3.6	96 km
Jan 6, 2015	4 km ENE of Irving, Texas	M3.5	32 km
Jun 24, 2012	3 km SSE of Briaroaks, Texas	M3.5	77 km
May 31, 1997	3 km ESE of Neylandville, Texas	M3.4	70 km
Sep 30, 2012	4 km NW of Irving, Texas	M3.4	39 km
Nov 25, 2013	3 km WNW of Sanctuary, Texas	M3.4	100 km
Sep 23, 2013	4 km WNW of Marietta, Oklahoma	M3.4	139 km
May 19, 2018	8 km NW of Venus, Texas	M3.4	67 km
Sep 25, 2010	5 km ENE of Madill, Oklahoma	M3.3	146 km
Apr 2, 2015	5 km NNE of Irving, Texas	M3.3	36 km
Jun 15, 2012	5 km SSE of Briaroaks, Texas	M3.3	77 km
May 18, 2015	5 km N of Irving, Texas	M3.3	38 km
May 16, 2009	5 km NNW of Grand Prairie, Texas	M3.3	43 km
Jan 18, 2012	9 km SSE of Godley, Texas	M3.3	99 km
Sep 23, 2013	2 km NNE of Marietta, Oklahoma	M3.2	138 km

Source: USGS (M2.5+, 1990–2025)

Hurricane History

1 hurricane (Cat 1+) within 500 km since 1980. Strongest: Category 1. Most recent: Ike (2008, Cat 1).

Year	Name	Category	Closest
2008	Ike	Category 2	233 km

Source: NOAA IBTrACS (Cat 1+, 1980–2026)

Tornado History

832 tornadoes (EF0+) within 100 km since 1950. Strongest: EF4. Total: 44 fatalities, 1,598 injuries.

Date	Rating	Distance	Fatalities
Apr 29, 2017	EF4	79 km	2
Dec 26, 2015	EF4	3 km	10
Apr 25, 1994	EF4	29 km	3
May 26, 1976	EF4	90 km	0
May 25, 2024	EF3	64 km	0
Oct 20, 2019	EF3	34 km	0
Apr 29, 2017	EF3	78 km	2
Dec 26, 2015	EF3	50 km	0
May 10, 2015	EF3	98 km	2
Apr 3, 2012	EF3	10 km	0
May 9, 2006	EF3	64 km	3
Apr 16, 2002	EF3	74 km	0
Mar 28, 2000	EF3	74 km	2
Mar 28, 2000	EF3	53 km	0
Dec 13, 1984	EF3	11 km	0
Apr 2, 1982	EF3	96 km	1
May 3, 1979	EF3	97 km	0
May 5, 1978	EF3	33 km	0
May 26, 1976	EF3	29 km	0
May 26, 1976	EF3	95 km	0

Source: NOAA SPC (EF0+, 1950–2024)

Wildfire History

5 wildfires (100+ acres) within 100 km. Largest: UNNAMED (2,944 ac, 2008).

Year	Name	Acres	Distance
2008	UNNAMED	2,944	92 km
2018	FARMERS ROAD	2,383	97 km
2005	200 MOUNTAIN RIDGE	2,051	100 km
2006	UNNAMED	1,634	92 km
2006	COOPER LAKE	1,224	89 km

Source: NIFC/IRWIN (100+ acres)

Monthly Weather

Month	Avg Temperature	Precipitation	Summary
January	46°F (8°C)	2.1 in	Coldest, Driest
February	50°F (10°C)	2.7 in
March	57°F (14°C)	3.2 in
April	65°F (18°C)	3.9 in
May	73°F (23°C)	5.2 in	Wettest
June	80°F (27°C)	3.5 in
July	85°F (29°C)	2.3 in	Warmest
August	84°F (29°C)	2.1 in
September	77°F (25°C)	3.8 in
October	67°F (19°C)	3.9 in
November	55°F (13°C)	2.7 in
December	47°F (8°C)	2.6 in

Sunnyvale has a seasonal temperature swing of 39°F / from 46°F in January to 85°F in July. Total annual precipitation is 38.0 inches, with May being the wettest month (5.2") and January the driest (2.1").

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