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Weather & Climate in Siloam Springs, AR

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

Siloam Springs enjoys a temperate climate with an average annual temperature of 60°F (16°C). Winters average 39°F in January while summers reach 81°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 43. The city sits at an elevation of 1,136 feet.

Temperature

39°F Jan (4°C) 81°F Jul (27°C)
Annual Average60.4°F
12% above US avg
January Average39°F (4°C)
July Average81°F (27°C)
Sunny Days318 days/yr

Geography

Elevation1,136 ft (346 m)
Area12.3 sq mi (31.8 km²)
Population Density1,474/sq mi
Coordinates36.1846°N, 94.5315°W
TimezoneAmerica/Chicago
CountyBenton County County
Nearest AirportNorthwest Arkansas Ntl (XNA)
14 miles away

Precipitation & Snow

Wettest Month (May) 5.20"
Driest Month (Jan) 2.01"

Air Quality

AQI Median43.0
RatingGood

Natural Hazard Risk

Overall RiskRelatively Moderate
Risk Score88.7 / 100
Social Vulnerability17.0 / 100
Community Resilience43.4 / 100

Hazard Breakdown

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

Earthquake History

62 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M3.7.

Aug 24, 2021 1 km S of Quinton, Oklahoma M3.7 142 km 7 km
Aug 18, 2019 1 km ENE of Quinton, Oklahoma M3.7 139 km 6 km
Jun 11, 2017 6 km NNE of Bergman, Arkansas M3.6 140 km 6 km
Nov 15, 1990 16 km NNW of Hector, Arkansas M3.5 149 km 29 km
Aug 22, 2021 3 km ESE of Quinton, Oklahoma M3.4 140 km 7 km
Jul 22, 2021 2 km E of Quinton, Oklahoma M3.3 139 km 8 km
Feb 7, 2020 2 km SSW of Quinton, Oklahoma M3.2 143 km 6 km
Feb 7, 2020 3 km SSW of Quinton, Oklahoma M3.2 143 km 6 km
Aug 12, 2019 1 km NE of Quinton, Oklahoma M3.2 139 km 5 km
Jun 3, 2022 10 km W of Quinton, Oklahoma M3.2 146 km 13 km
Apr 1, 2020 2 km NE of Quinton, Oklahoma M3.1 137 km 9 km
Jun 16, 2017 6 km N of Bergman, Arkansas M2.9 139 km 6 km
Feb 3, 2021 1 km SW of Quinton, Oklahoma M2.9 142 km 7 km
Sep 21, 2019 2 km NNE of Quinton, Oklahoma M2.9 138 km 7 km
Aug 12, 2021 2 km E of Quinton, Oklahoma M2.8 139 km 7 km
Jul 8, 2019 3 km ENE of Quinton, OK M2.8 138 km 10 km
Mar 23, 2024 9 km SE of Foyil, Oklahoma M2.8 85 km 5 km
Aug 15, 2019 2 km ENE of Quinton, Oklahoma M2.8 139 km 5 km
Aug 22, 2021 1 km E of Quinton, Oklahoma M2.8 140 km 7 km
Aug 22, 2021 3 km ESE of Quinton, Oklahoma M2.8 140 km 7 km
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.

Tornado History

693 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF5. Total: 204 fatalities, 1,919 injuries.

Date Rating Distance Path Fatalities
May 22, 2011 EF5 97 km 21.6 mi 158
Apr 24, 1975 EF4 72 km 11.9 mi 3
May 5, 1960 EF4 90 km 5.4 mi 5
Sep 27, 1959 EF4 98 km 20.4 mi 1
Jan 22, 1957 EF4 88 km 0.1 mi 10
Apr 3, 1956 EF4 76 km 41.8 mi 0
May 25, 2024 EF3 15 km 7.9 mi 0
Mar 30, 2022 EF3 34 km 5.2 mi 0
May 22, 2011 EF3 46 km 17.9 mi 0
Dec 31, 2010 EF3 21 km 21.1 mi 4
Mar 12, 2006 EF3 12 km 25.0 mi 0
Mar 12, 2006 EF3 52 km 29.0 mi 0
May 4, 2003 EF3 87 km 49.0 mi 7
Jun 1, 1999 EF3 69 km 2.0 mi 2
May 4, 1999 EF3 68 km 38.2 mi 0
Apr 21, 1996 EF3 83 km 15.0 mi 2
Apr 21, 1996 EF3 90 km 10.1 mi 2
Nov 22, 1983 EF3 42 km 19.0 mi 0
Dec 2, 1982 EF3 83 km 1.0 mi 0
Apr 19, 1981 EF3 59 km 3.0 mi 0
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).

Wildfire History

20 wildfires (100+ acres) recorded within 100 km. Largest: UNNAMED (18,089 acres, 2007).

Year Name Acres Burned Distance
2007 UNNAMED 18,089 77 km
2007 UNNAMED 14,774 79 km
2004 UNNAMED 12,086 82 km
2017 MIDDLE RIDGE 8,501 68 km
2016 UNNAMED 7,919 88 km
2013 UNNAMED 7,804 88 km
2003 UNNAMED 7,415 74 km
2019 UNNAMED 7,344 88 km
2007 UNNAMED 6,657 67 km
2017 HILLTOP 6,523 76 km
2010 SPUD ROCK CENTRAL 6,117 74 km
2009 TELAMAY HOLLOW 5,686 32 km
2006 UNNAMED 5,537 79 km
2017 PERSIMMON RIDGE 5,333 78 km
2009 SAWMILL HOLLOW 5,166 30 km
2011 GRUBER 4,831 77 km
2017 UNNAMED 4,818 81 km
2010 SARAH HOLLOW RX 4,700 99 km
1992 UNNAMED 4,546 21 km
2005 FLAT ROCK 4,472 69 km
Source: NIFC/IRWIN Wildfire Records (100+ acres).

Monthly Weather

Month Avg Temperature Precipitation Summary
January 39°F (4°C) 2.0 in Driest
February 40°F (4°C) 2.3 in
March 49°F (9°C) 4.0 in
April 58°F (15°C) 4.3 in
May 66°F (19°C) 5.2 in Wettest
June 74°F (23°C) 4.7 in
July 81°F (27°C) 3.2 in Warmest
August 78°F (26°C) 3.5 in
September 70°F (21°C) 5.0 in
October 60°F (15°C) 4.0 in
November 48°F (9°C) 4.2 in
December 39°F (4°C) 3.0 in Coldest

Siloam Springs has a seasonal temperature swing of 42°F / from 39°F in December to 81°F in July. Total annual precipitation is 45.5 inches, with May being the wettest month (5.2") and January the driest (2.0").

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