Weather & Climate in Dewar, OK

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

Dewar enjoys a temperate climate with an average annual temperature of 60°F (16°C). Winters average 38°F in January while summers reach 82°F in July. The area gets 318 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 45. The city sits at an elevation of 640 feet.

Temperature

38°F Jan (3°C) 82°F Jul (28°C)

Annual Average	60.0°F
	11% above US avg
January Average	38°F (3°C)
July Average	82°F (28°C)
Sunny Days	318 days/yr

Geography

Elevation	640 ft (195 m)
Area	0.9 sq mi (2.4 km²)
Population Density	737/sq mi
Coordinates	35.4579°N, 95.9491°W
Timezone	America/Chicago
County	Okmulgee County County
Nearest Airport	Okmulgee Regional/Paul And Betty Abbott Field (OKM) 17 miles away

Precipitation & Snow

Wettest Month (May) 5.75"

Driest Month (Jan) 1.65"

Air Quality

AQI Median	45.0
Rating	Good

Natural Hazard Risk

Overall Risk	Relatively Low
Risk Score	74.6 / 100
Social Vulnerability	82.1 / 100
Community Resilience	28.3 / 100

Hazard Breakdown

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

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

Earthquake History

2,830 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M5.8.

Sep 3, 2016	14 km NW of Pawnee, Oklahoma	M5.8	139 km	6 km
Feb 3, 2024	8 km NW of Prague, Oklahoma	M5.1	74 km	3 km
Dec 7, 2013	8 km SW of Arcadia, Oklahoma	M4.5	131 km	8 km
Sep 6, 1997	6 km N of Tupelo, Oklahoma	M4.5	99 km	5 km
Aug 19, 2014	12 km SSW of Guthrie, Oklahoma	M4.4	142 km	5 km
Apr 16, 2013	Oklahoma	M4.4	106 km	6 km
Jun 16, 2014	7 km NNE of Lake Aluma, Oklahoma	M4.3	132 km	5 km
Jan 13, 2024	6 km W of Arcadia, Oklahoma	M4.3	133 km	7 km
Jan 27, 2015	3 km SE of Perry, Oklahoma	M4.2	148 km	3 km
Apr 7, 2016	1 km E of Luther, Oklahoma	M4.2	113 km	6 km
Jan 1, 2016	6 km ENE of Edmond, Oklahoma	M4.2	134 km	6 km
Jul 14, 2017	10 km WSW of Shamrock, Oklahoma	M4.2	80 km	7 km
Apr 16, 2013	3 km WSW of Wellston, Oklahoma	M4.2	107 km	7 km
Apr 19, 2015	6 km W of Langston, Oklahoma	M4.2	136 km	3 km
Aug 3, 2017	6 km ENE of Edmond, Oklahoma	M4.2	134 km	5 km
Apr 7, 2014	6 km NNW of Meridian, Oklahoma	M4.2	129 km	5 km
Feb 27, 2010	8 km SE of Sparks, Oklahoma	M4.1	73 km	5 km
Jan 13, 2024	6 km ENE of Edmond, Oklahoma	M4.1	134 km	7 km
Apr 27, 2015	7 km WSW of Langston, Oklahoma	M4.1	134 km	5 km
Jun 18, 2014	7 km NE of Lake Aluma, Oklahoma	M4.1	132 km	5 km

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

Tornado History

851 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF5. Total: 100 fatalities, 1,537 injuries.

Date	Rating	Distance	Path	Fatalities
May 5, 1960	EF5	91 km	71.8 mi	5
Apr 24, 1993	EF4	78 km	5.5 mi	7
May 11, 1992	EF4	79 km	10.0 mi	0
Apr 26, 1991	EF4	94 km	32.0 mi	1
Apr 29, 1984	EF4	74 km	27.0 mi	1
Apr 26, 1984	EF4	91 km	22.0 mi	3
May 17, 1981	EF4	60 km	33.6 mi	0
Jun 8, 1974	EF4	84 km	29.0 mi	14
May 26, 1973	EF4	58 km	3.6 mi	5
Oct 5, 1970	EF4	90 km	25.0 mi	4
May 5, 1960	EF4	87 km	62.4 mi	16
May 4, 1960	EF4	96 km	8.0 mi	0
Apr 28, 1950	EF4	59 km	4.5 mi	5
May 25, 2024	EF3	96 km	23.9 mi	2
Apr 27, 2024	EF3	68 km	27.9 mi	2
May 10, 2010	EF3	97 km	37.2 mi	0
May 29, 2004	EF3	72 km	7.5 mi	0
Jun 1, 1999	EF3	39 km	4.5 mi	0
Jun 1, 1999	EF3	85 km	2.0 mi	2
May 3, 1999	EF3	80 km	16.0 mi	0

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

Wildfire History

20 wildfires (100+ acres) recorded within 100 km. Largest: FREEDOM HILL (57,116 acres, 2012).

Year	Name	Acres Burned	Distance
2012	FREEDOM HILL	57,116	77 km
2004	UNNAMED	27,091	38 km
2011	HOG TRAP	22,895	42 km
2009	BURNT TRUST	22,578	32 km
2007	UNNAMED	18,089	78 km
2011	UNNAMED	17,973	96 km
1991	UNNAMED	16,700	39 km
2005	CABINESS	14,646	50 km
2004	UNNAMED	14,138	17 km
2009	40 ACRE TURNAROUND	13,985	87 km
2016	PHAROAH	13,579	16 km
2004	UNNAMED	12,086	74 km
2011	UNNAMED	11,348	47 km
2023	ZINK	11,332	98 km
2011	UNNAMED	10,205	74 km
2016	MAKER	9,940	97 km
2005	WEWOKA CREEK	9,921	53 km
1996	UNNAMED	9,481	38 km
2011	TI VALLEY	9,205	89 km
1996	UNNAMED	9,165	26 km

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

Monthly Weather

Month	Avg Temperature	Precipitation	Summary
January	38°F (3°C)	1.7 in	Coldest, Driest
February	43°F (6°C)	2.2 in
March	52°F (11°C)	3.8 in
April	61°F (16°C)	4.1 in
May	68°F (20°C)	5.8 in	Wettest
June	76°F (25°C)	4.3 in
July	82°F (28°C)	2.9 in	Warmest
August	81°F (27°C)	2.6 in
September	73°F (23°C)	4.7 in
October	63°F (17°C)	4.1 in
November	50°F (10°C)	3.5 in
December	41°F (5°C)	2.4 in

Dewar has a seasonal temperature swing of 44°F / from 38°F in January to 82°F in July. Total annual precipitation is 41.9 inches, with May being the wettest month (5.8") and January the driest (1.7").

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