Weather & Climate in St. Johns, AZ

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

St. Johns experiences four distinct seasons with an average annual temperature of 54°F (12°C). Winters average 34°F in January while summers reach 76°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 9.1 inches (drier than the 38-inch national average). Air quality is rated Good with a median AQI of 45. The city sits at an elevation of 5,736 feet.

Temperature

34°F Jan (1°C) 76°F Jul (24°C)

Annual Average	54.1°F
	0% below US avg
January Average	34°F (1°C)
July Average	76°F (24°C)
Sunny Days	330 days/yr

Geography

Elevation	5,736 ft (1,748 m)
Area	25.9 sq mi (67.1 km²)
Population Density	23/sq mi
Coordinates	34.5004°N, 109.3769°W
Timezone	America/Phoenix
County	Apache County County
Nearest Airport	Show Low Regional (SOW) 39 miles away

Precipitation & Snow

Annual Rainfall 9.1"

76% below US avg

Wettest Month (Aug) 2.13"

Driest Month (Apr) 0.35"

Air Quality

AQI Median	45.0
Rating	Good

Natural Hazard Risk

Overall Risk	Relatively Low
Risk Score	78.8 / 100
Social Vulnerability	99.8 / 100
Community Resilience	0.3 / 100

Hazard Breakdown

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

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

Earthquake History

26 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M5.1.

Mar 2, 2005	40 km SSW of Winslow West, Arizona	M5.1	148 km	5 km
Jan 6, 1998	15 km WSW of Joseph City, Arizona	M3.9	112 km	5 km
Oct 8, 2012	32 km WNW of Glenwood, New Mexico	M3.6	124 km	5 km
May 24, 2010	27 km NNE of Morenci, Arizona	M3.6	134 km	5 km
May 24, 2010	24 km NNE of Morenci, Arizona	M3.6	137 km	5 km
Oct 29, 2012	35 km WNW of Glenwood, New Mexico	M3.5	122 km	5 km
Sep 23, 2009	29 km W of Alamo, New Mexico	M3.4	142 km	5 km
Feb 16, 2013	34 km WNW of Glenwood, New Mexico	M3.3	121 km	5 km
Jul 1, 2005	37 km NE of Washington Park, Arizona	M3.2	150 km	5 km
Jan 8, 2012	28 km SW of Winslow West, Arizona	M3.2	148 km	5 km
Mar 18, 2025	13 km NNE of Clay Springs, Arizona	M3.2	80 km	5 km
Sep 23, 2019	22 km NNW of Saint Johns, Arizona	M3.1	23 km	5 km
May 25, 2010	25 km NNE of Clifton, Arizona	M3.0	138 km	5 km
Jun 18, 2022	4 km SW of Clay Springs, Arizona	M3.0	89 km	10 km
Feb 8, 2005	41 km NE of Washington Park, Arizona	M2.9	149 km	5 km
Mar 12, 2004	24 km NW of Morenci, Arizona	M2.8	143 km	5 km
Sep 23, 2013	7 km WSW of Pinedale, Arizona	M2.8	90 km	5 km
Apr 21, 2005	36 km SSW of Winslow West, Arizona	M2.8	142 km	5 km
May 14, 2011	27 km W of Alamo, New Mexico	M2.7	144 km	5 km
Jan 1, 2021	17 km S of Winslow West, Arizona	M2.7	135 km	5 km

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

Tornado History

19 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF0.

Date	Rating	Distance	Path	Fatalities
Jul 26, 2024	EF0	77 km	1.0 mi	0
Jun 7, 2024	EF0	92 km	1.0 mi	0
Jun 17, 2021	EF0	67 km	0.1 mi	0
Sep 1, 2011	EF0	79 km	1.2 mi	0
Jul 24, 2011	EF0	65 km	1.0 mi	0
May 22, 2009	EF0	73 km	1.0 mi	0
Sep 3, 2008	EF0	72 km	0.5 mi	0
Aug 30, 2006	EF0	76 km	1.0 mi	0
Jul 25, 2005	EF0	71 km	1.0 mi	0
Jul 16, 2005	EF0	1 km	1.0 mi	0
Jul 16, 2005	EF0	21 km	1.0 mi	0
Jun 23, 2005	EF0	57 km	1.0 mi	0
Sep 16, 2001	EF0	64 km	1.0 mi	0
Sep 16, 2001	EF0	64 km	3.0 mi	0
Aug 29, 2001	EF0	85 km	1.0 mi	0
Oct 22, 1997	EF0	86 km	0.5 mi	0
Aug 14, 1979	EF0	46 km	1.0 mi	0
Oct 27, 1974	EF0	60 km	0.2 mi	0
Apr 20, 1973	EF0	86 km	0.1 mi	0

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

Nearby Volcanoes

2 volcanoes within 200 km. Closest: Red Hill (57 km).

Name	Type	Elevation	Last Eruption	Distance
Red Hill	Volcanic field	2,300 m (7,546 ft)	-9450	57 km
Zuni-Bandera	Volcanic field	2,550 m (8,366 ft)	-1170	130 km

Source: Smithsonian Institution Global Volcanism Program (GVP).

Wildfire History

20 wildfires (100+ acres) recorded within 100 km. Largest: WALLOW (563,664 acres, 2011).

Year	Name	Acres Burned	Distance
2011	WALLOW	563,664	79 km
2016	CEDAR	44,163	89 km
2018	RATTLESNAKE	27,383	97 km
2003	KINISHBA	26,205	90 km
1996	UNNAMED	19,686	97 km
2021	HORTON	12,525	91 km
1993	RX BURN	11,997	96 km
2005	JOHNSON WFU	11,842	73 km
2003	THOMAS	10,668	95 km
2017	BACA	10,382	97 km
2010	TURKEY	10,168	39 km
2017	MAVERICK PRESCRIBED BURN	8,102	89 km
2006	UNNAMED	7,756	92 km
2002	LITTLE	7,704	38 km
2014	SAN JUAN	7,350	46 km
2009	RENO	6,976	97 km
2004	THREE FORKS	6,846	69 km
2010	PARADISE	6,416	98 km
2019	UNNAMED	6,330	79 km
1999	ELK CANYON	6,244	84 km

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

Monthly Weather

Month	Avg Temperature	Precipitation	Summary
January	34°F (1°C)	0.7 in	Coldest
February	40°F (4°C)	0.5 in
March	45°F (7°C)	0.7 in
April	52°F (11°C)	0.4 in	Driest
May	60°F (16°C)	0.4 in
June	70°F (21°C)	0.4 in
July	76°F (24°C)	1.6 in	Warmest
August	72°F (22°C)	2.1 in	Wettest
September	66°F (19°C)	1.3 in
October	55°F (13°C)	1.1 in
November	43°F (6°C)	0.6 in
December	35°F (1°C)	0.6 in

St. Johns has a seasonal temperature swing of 42°F / from 34°F in January to 76°F in July. Total annual precipitation is 10.5 inches, with August being the wettest month (2.1") and April the driest (0.4").

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