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Weather & Climate in Oark, AR

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

Oark enjoys a temperate climate with an average annual temperature of 60°F (16°C). Winters average 38°F in January while summers reach 81°F in July. The area gets 301 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 52.2 inches (wetter than the 38-inch national average). Air quality is rated Good with a median AQI of 43. The city sits at an elevation of 1,078 feet.

Temperature

38°F Jan (4°C) 81°F Jul (27°C)
Annual Average60.2°F
11% above US avg
January Average38°F (4°C)
July Average81°F (27°C)
Sunny Days301 days/yr

Geography

Elevation1,078 ft (329 m)
Area0.4 sq mi (1.0 km²)
Population Density42/sq mi
Coordinates35.6950°N, 93.5750°W
TimezoneAmerica/Chicago
CountyJohnson County County
Nearest AirportFort Smith Regional (FSM)
54 miles away

Precipitation & Snow

Annual Rainfall 52.2"
37% above US avg
Wettest Month (May) 5.59"
Driest Month (Jan) 2.52"

Air Quality

AQI Median43.0
RatingGood

Natural Hazard Risk

Overall RiskRelatively Low
Risk Score58.1 / 100
Social Vulnerability79.3 / 100
Community Resilience19.2 / 100

Hazard Breakdown

Tornado Relatively Moderate
Hurricane Very Low
Earthquake Relatively Low
Wildfire Relatively Low
Flood Relatively Low
Hail Relatively Low
Strong Wind Relatively Moderate
Heat Wave Relatively Moderate
Winter Weather Relatively Moderate
Lightning Relatively Moderate
Ice Storm Relatively High
Drought Relatively Low
Cold Wave Relatively Low
Landslide Relatively Low
Source: FEMA National Risk Index v1.20 (Dec 2025)

Earthquake History

230 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.7.

Feb 28, 2011 4 km NE of Greenbrier, Arkansas M4.7 120 km 3 km
May 4, 2001 8 km NNW of Holland, Arkansas M4.3 127 km 8 km
Feb 18, 2011 4 km NNE of Greenbrier, Arkansas M4.1 118 km 6 km
Apr 8, 2011 3 km NE of Greenbrier, Arkansas M3.9 120 km 6 km
Feb 18, 2011 3 km NNE of Greenbrier, Arkansas M3.9 120 km 5 km
Jun 4, 2014 3 km ESE of Fairfield Bay, Arkansas M3.8 121 km 0 km
Feb 17, 2011 4 km NNE of Greenbrier, Arkansas M3.8 120 km 6 km
Sep 12, 2019 13 km N of Big Flat, Arkansas M3.7 116 km 18 km
Apr 7, 2011 2 km NE of Greenbrier, Arkansas M3.7 120 km 6 km
Feb 28, 2011 4 km NNE of Greenbrier, Arkansas M3.6 119 km 4 km
Jun 11, 2017 6 km NNE of Bergman, Arkansas M3.6 92 km 6 km
Feb 20, 2011 3 km NNE of Greenbrier, Arkansas M3.6 119 km 5 km
Feb 25, 2011 4 km NNE of Greenbrier, Arkansas M3.5 118 km 6 km
Mar 9, 2011 1 km NW of Greenbrier, Arkansas M3.5 118 km 6 km
Feb 16, 2011 4 km NNE of Greenbrier, Arkansas M3.5 120 km 7 km
Nov 15, 1990 16 km NNW of Hector, Arkansas M3.5 49 km 29 km
Mar 3, 2011 0 km N of Greenbrier, Arkansas M3.5 119 km 7 km
Apr 8, 2011 2 km NNE of Greenbrier, Arkansas M3.5 119 km 6 km
Feb 19, 2011 4 km NNE of Greenbrier, Arkansas M3.4 119 km 7 km
May 24, 2013 16 km WSW of Center Ridge, Arkansas M3.4 90 km 6 km
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.

Tornado History

438 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF4. Total: 72 fatalities, 1,018 injuries.

Date Rating Distance Path Fatalities
May 24, 2011 EF4 58 km 45.7 mi 4
Feb 5, 2008 EF4 81 km 121.8 mi 13
Apr 19, 1968 EF4 84 km 2.0 mi 14
May 5, 1960 EF4 95 km 5.4 mi 5
May 26, 2024 EF3 71 km 21.6 mi 4
May 26, 2024 EF3 97 km 34.6 mi 1
Mar 30, 2022 EF3 71 km 5.2 mi 0
May 24, 2011 EF3 31 km 29.0 mi 1
Dec 31, 2010 EF3 95 km 21.1 mi 4
Apr 30, 2010 EF3 80 km 20.3 mi 1
May 2, 2008 EF3 98 km 45.3 mi 5
May 4, 1999 EF3 89 km 38.2 mi 0
Mar 5, 1999 EF3 90 km 10.0 mi 0
Apr 21, 1996 EF3 20 km 15.0 mi 2
Apr 21, 1996 EF3 87 km 10.1 mi 2
Nov 18, 1985 EF3 98 km 34.0 mi 3
Dec 23, 1982 EF3 86 km 14.0 mi 0
Dec 2, 1982 EF3 90 km 23.0 mi 0
Dec 2, 1982 EF3 64 km 1.0 mi 0
Apr 2, 1982 EF3 87 km 1.0 mi 0
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).

Wildfire History

20 wildfires (100+ acres) recorded within 100 km. Largest: UNNAMED (15,318 acres, 2000).

Year Name Acres Burned Distance
2000 UNNAMED 15,318 69 km
2007 UNNAMED 14,993 21 km
2007 UNNAMED 14,774 27 km
1998 UNNAMED 13,929 70 km
2016 UNNAMED 11,929 70 km
2024 RX FOUCHE VALLEY 10,912 84 km
2016 UNNAMED 9,483 98 km
2013 UNNAMED 9,385 87 km
2014 UNNAMED 9,368 21 km
2018 UNNAMED 9,226 59 km
2013 UNNAMED 8,607 98 km
2017 MIDDLE RIDGE 8,501 96 km
2003 UNNAMED 8,286 59 km
2014 UNNAMED 7,945 84 km
2016 UNNAMED 7,919 14 km
2013 UNNAMED 7,804 14 km
2003 UNNAMED 7,415 38 km
2003 UNNAMED 7,347 97 km
2019 UNNAMED 7,344 15 km
2007 UNNAMED 6,804 100 km
Source: NIFC/IRWIN Wildfire Records (100+ acres).

Monthly Weather

Month Avg Temperature Precipitation Summary
January 38°F (4°C) 2.5 in Coldest, Driest
February 40°F (5°C) 3.0 in
March 49°F (9°C) 4.8 in
April 57°F (14°C) 4.6 in
May 64°F (18°C) 5.6 in Wettest
June 72°F (22°C) 4.3 in
July 81°F (27°C) 3.3 in Warmest
August 75°F (24°C) 3.3 in
September 69°F (20°C) 4.3 in
October 58°F (15°C) 4.1 in
November 47°F (8°C) 4.7 in
December 39°F (4°C) 3.9 in

Oark has a seasonal temperature swing of 43°F / from 38°F in January to 81°F in July. Total annual precipitation is 48.2 inches, with May being the wettest month (5.6") and January the driest (2.5").

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