Weather & Climate in Williamson, AZ

Temperature, precipitation, air quality, natural hazards, and monthly weather data.

Williamson experiences four distinct seasons with an average annual temperature of 54°F (12°C). Winters average 38°F in January while summers reach 73°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 14.8 inches (drier than the 38-inch national average). The area receives 5.5 inches of snow annually. Air quality is rated Good with a median AQI of 45. The city sits at an elevation of 5,101 feet.

Temperature

38°F Jan (3°C) 73°F Jul (23°C)

Annual Average	53.9°F
	0% below US avg
January Average	38°F (3°C)
July Average	73°F (23°C)
Sunny Days	330 days/yr

Geography

Elevation	5,101 ft (1,555 m)
Area	56.9 sq mi (147.4 km²)
Population Density	105/sq mi
Coordinates	34.7083°N, 112.5337°W
Timezone	America/Phoenix
County	Yavapai County County
Nearest Airport	Prescott Regional - Ernest A Love Field (PRC) 7 miles away

Precipitation & Snow

Annual Rainfall 14.8"

61% below US avg

Snowfall 5.5"

Wettest Month (Aug) 2.83"

Driest Month (Jun) 0.35"

Air Quality

AQI Median	45.0
Rating	Good

Natural Hazard Risk

Overall Risk	Relatively Moderate
Risk Score	93.7 / 100
Social Vulnerability	73.0 / 100
Community Resilience	18.0 / 100

Hazard Breakdown

Tornado	Relatively Low
Hurricane	No Rating
Earthquake	Relatively Low
Wildfire	Relatively High
Flood	Relatively High
Hail	Relatively Moderate
Strong Wind	Relatively Low
Heat Wave	Relatively Moderate
Winter Weather	Relatively High
Lightning	Very High
Drought	Very Low
Cold Wave	Very Low
Landslide	Relatively Low
Volcano	Very Low
Avalanche	Very Low

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

Earthquake History

91 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M5.3.

Apr 29, 1993	5 km SSE of Valle, Arizona	M5.3	107 km	10 km
Mar 2, 2005	40 km SSW of Winslow West, Arizona	M5.1	143 km	5 km
Apr 25, 1993	3 km SSW of Valle, Arizona	M5.0	108 km	10 km
Jul 5, 1992	Arizona	M4.0	145 km	5 km
Jan 30, 2005	41 km NNE of Washington Park, Arizona	M4.0	133 km	5 km
Jul 23, 2023	2 km E of Chino Valley, Arizona	M3.8	11 km	5 km
Mar 18, 2011	7 km NNW of Clarkdale, Arizona	M3.8	43 km	5 km
Jan 28, 2005	40 km NE of Washington Park, Arizona	M3.8	140 km	5 km
May 7, 1993	4 km SW of Valle, Arizona	M3.8	107 km	10 km
Mar 31, 1997	18 km SE of Valle, Arizona	M3.7	104 km	5 km
Mar 14, 1992	12 km WSW of Grand Canyon Village, Arizona	M3.7	145 km	5 km
Apr 17, 1995	8 km W of Tusayan, Arizona	M3.7	142 km	5 km
Mar 14, 1992	20 km WSW of Grand Canyon Village, Arizona	M3.7	140 km	5 km
Feb 8, 2005	37 km NE of Washington Park, Arizona	M3.6	139 km	5 km
Apr 29, 1993	4 km S of Valle, Arizona	M3.6	107 km	10 km
Feb 4, 1993	8 km W of Tusayan, Arizona	M3.6	142 km	5 km
Jan 23, 2011	7 km NNW of Clarkdale, Arizona	M3.6	43 km	5 km
Jun 21, 1993	14 km WSW of Grand Canyon Village, Arizona	M3.5	143 km	5 km
Oct 25, 2011	4 km WSW of Paulden, Arizona	M3.5	18 km	5 km
Nov 13, 1991	5 km NW of Prescott Valley, Arizona	M3.5	17 km	5 km

Source: USGS Earthquake Catalog (M2.5+, 1990-2025). Sorted by magnitude.

Tornado History

43 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF3. Total: 10 injuries.

Date	Rating	Distance	Path	Fatalities
Aug 10, 1972	EF3	7 km	0.1 mi	0
Oct 6, 2010	EF2	68 km	32.0 mi	0
Oct 6, 2010	EF2	68 km	34.1 mi	0
Oct 6, 2010	EF2	67 km	2.8 mi	0
Oct 6, 2010	EF2	63 km	18.6 mi	0
May 16, 1993	EF2	5 km	0.3 mi	0
Oct 3, 2022	EF1	78 km	0.7 mi	0
Oct 14, 2006	EF1	76 km	9.3 mi	0
Sep 13, 1996	EF1	8 km	4.0 mi	0
May 1, 1980	EF1	75 km	26.5 mi	0
Mar 14, 1979	EF1	99 km	0.5 mi	0
Nov 2, 1959	EF1	17 km	0.1 mi	0
Sep 9, 2023	EF0	8 km	0.1 mi	0
Jul 17, 2023	EF0	17 km	5.5 mi	0
Jun 25, 2022	EF0	25 km	0.1 mi	0
Jul 11, 2021	EF0	8 km	0.7 mi	0
Sep 27, 2014	EF0	29 km	2.1 mi	0
Oct 6, 2010	EF0	77 km	7.3 mi	0
Oct 6, 2010	EF0	83 km	17.1 mi	0
May 6, 2008	EF0	75 km	0.2 mi	0

Source: NOAA Storm Prediction Center (EF0+, 1950-2024, US only).

Nearby Volcanoes

2 volcanoes within 200 km. Closest: San Francisco Volcanic Field (105 km).

Name	Type	Elevation	Last Eruption	Distance
San Francisco Volcanic Field	Pyroclastic cone	3,850 m (12,631 ft)	1075	105 km
Uinkaret Field	Volcanic field	1,555 m (5,102 ft)	1100	194 km

Source: Smithsonian Institution Global Volcanism Program (GVP).

Wildfire History

20 wildfires (100+ acres) recorded within 100 km. Largest: CAVE CREEK COMPLEX (246,143 acres, 2005).

Year	Name	Acres Burned	Distance
2005	CAVE CREEK COMPLEX	246,143	79 km
2021	RAFAEL	75,741	61 km
2021	BACKBONE	41,168	87 km
2017	BROOKLYN	39,780	76 km
1998	UNNAMED	38,814	37 km
2023	PILOT	29,883	75 km
2017	GOODWIN	28,192	42 km
2024	SKELETON	22,753	76 km
2014	SLIDE	22,698	75 km
2005	SH RANCH COMPLEX	22,636	43 km
2019	SHERIDAN	17,411	33 km
2021	TIGER	16,380	67 km
2012	GLADIATOR	16,096	52 km
2000	PUMPKIN	16,086	100 km
2020	CONSTELLATION	11,245	74 km
2020	PILOT KNOB	11,067	67 km
2014	WILDFIRE-SITGREAVES FY14	10,381	86 km
2005	J. CANYON	10,361	60 km
2017	UNNAMED	9,858	79 km
2008	MARTEEN WFU	9,735	93 km

Source: NIFC/IRWIN Wildfire Records (100+ acres).

Monthly Weather

Month	Avg Temperature	Precipitation	Summary
January	38°F (3°C)	1.5 in	Coldest
February	42°F (5°C)	1.6 in
March	46°F (8°C)	1.7 in
April	52°F (11°C)	0.7 in
May	59°F (15°C)	0.6 in
June	68°F (20°C)	0.4 in	Driest
July	73°F (23°C)	2.5 in
August	73°F (23°C)	2.8 in	Warmest, Wettest
September	68°F (20°C)	1.7 in
October	57°F (14°C)	1.1 in
November	46°F (8°C)	1.3 in
December	39°F (4°C)	1.3 in

Williamson has a seasonal temperature swing of 35°F / from 38°F in January to 73°F in August. Total annual precipitation is 17.1 inches, with August being the wettest month (2.8") and June the driest (0.4").

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