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Weather & Climate in Harrisburg, AR

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

Harrisburg enjoys a temperate climate with an average annual temperature of 60°F (15°C). Winters average 37°F in January while summers reach 79°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 51.2 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 283 feet.

Temperature

37°F Jan (3°C) 79°F Jul (26°C)
Annual Average59.6°F
10% above US avg
January Average37°F (3°C)
July Average79°F (26°C)
Sunny Days301 days/yr

Geography

Elevation283 ft (86 m)
Area2.0 sq mi (5.3 km²)
Population Density1,059/sq mi
Coordinates35.5638°N, 90.7216°W
TimezoneAmerica/Chicago
CountyPoinsett County County
Nearest AirportWalnut Ridge Regional (ARG)
40 miles away

Precipitation & Snow

Annual Rainfall 51.2"
35% above US avg
Wettest Month (Apr) 5.12"
Driest Month (Jul) 2.91"

Air Quality

AQI Median43.0
RatingGood

Natural Hazard Risk

Overall RiskRelatively Low
Risk Score72.5 / 100
Social Vulnerability68.4 / 100
Community Resilience27.4 / 100

Hazard Breakdown

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

Earthquake History

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

May 4, 1991 2 km NNW of Risco, Missouri M4.5 138 km 11 km
May 4, 2001 8 km NNW of Holland, Arkansas M4.3 147 km 8 km
May 1, 2005 5 km SSE of Manila, Arkansas M4.2 60 km 10 km
Feb 10, 2005 3 km NNW of Etowah, Arkansas M4.1 48 km 15 km
Apr 30, 2003 1 km N of Blytheville, Arkansas M4.0 84 km 24 km
Jun 2, 2005 12 km S of Ridgely, Tennessee M4.0 130 km 15 km
Oct 21, 1999 9 km NW of Maynard, Arkansas M3.9 105 km 10 km
Jul 7, 1991 11 km ENE of Brandsville, Missouri M3.9 146 km 8 km
Aug 22, 2000 19 km WNW of Maynard, Arkansas M3.9 107 km 10 km
Oct 29, 2012 8 km SW of Parkin, Arkansas M3.9 41 km 21 km
Sep 17, 1997 2 km E of Trumann, Arkansas M3.8 25 km 0 km
Nov 29, 1996 1 km W of Blytheville, Arkansas M3.8 82 km 19 km
Jun 4, 2014 3 km ESE of Fairfield Bay, Arkansas M3.8 138 km 0 km
May 16, 2024 6 km S of Ridgely, Tennessee M3.8 133 km 8 km
Feb 23, 2013 7 km SW of Trumann, Arkansas M3.7 16 km 14 km
Apr 24, 2019 12 km NNW of Dyersburg, Tennessee M3.7 132 km 14 km
Jan 16, 2018 4 km SW of Caruthersville, Missouri M3.6 115 km 9 km
Oct 15, 2017 6 km SE of Manila, Arkansas M3.6 62 km 17 km
Sep 22, 2011 6 km E of Grandin, Missouri M3.6 140 km 11 km
Apr 2, 2015 1 km WNW of Cooter, Missouri M3.6 97 km 10 km
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.

Tornado History

547 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF4. Total: 217 fatalities, 2,596 injuries.

Date Rating Distance Path Fatalities
Dec 10, 2021 EF4 29 km 81.2 mi 8
Jan 21, 1999 EF4 81 km 16.0 mi 0
Apr 16, 1998 EF4 60 km 5.0 mi 2
Mar 1, 1997 EF4 54 km 20.0 mi 0
Mar 15, 1984 EF4 47 km 26.0 mi 5
May 26, 1973 EF4 67 km 54.8 mi 3
May 15, 1968 EF4 45 km 20.9 mi 35
May 15, 1968 EF4 68 km 0.3 mi 7
Mar 21, 1952 EF4 30 km 0.1 mi 4
Mar 21, 1952 EF4 98 km 6.5 mi 17
Mar 21, 1952 EF4 97 km 14.6 mi 50
Mar 21, 1952 EF4 79 km 13.1 mi 29
Mar 31, 2023 EF3 48 km 72.6 mi 4
Mar 31, 2023 EF3 81 km 39.2 mi 1
Mar 28, 2020 EF3 28 km 12.5 mi 0
Apr 30, 2010 EF3 51 km 7.7 mi 0
May 2, 2008 EF3 41 km 20.2 mi 0
Apr 2, 2006 EF3 48 km 38.0 mi 0
Apr 2, 2006 EF3 76 km 77.0 mi 2
May 4, 2003 EF3 83 km 43.0 mi 0
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).

Tsunami History

1 tsunami recorded within 500 km.

Year Location Cause Max Wave Deaths Distance
1811 AR: NE - NEW MADRID EARTHQUAKES Eruption + Earthquake — — 29 km
Source: NOAA/NCEI Historical Tsunami Database.

Wildfire History

3 wildfires (100+ acres) recorded within 100 km. Largest: UNNAMED (1,783 acres, 2006).

Year Name Acres Burned Distance
2006 UNNAMED 1,783 98 km
2005 WAPANOCCA LAKE 725 50 km
2018 UNNAMED 599 99 km
Source: NIFC/IRWIN Wildfire Records (100+ acres).

Monthly Weather

Month Avg Temperature Precipitation Summary
January 37°F (3°C) 3.3 in Coldest
February 42°F (6°C) 3.7 in
March 51°F (11°C) 4.9 in
April 60°F (16°C) 5.1 in Wettest
May 69°F (21°C) 5.1 in
June 77°F (25°C) 3.4 in
July 79°F (26°C) 2.9 in Warmest, Driest
August 79°F (26°C) 3.2 in
September 72°F (22°C) 3.8 in
October 62°F (16°C) 3.2 in
November 50°F (10°C) 4.8 in
December 41°F (5°C) 4.7 in

Harrisburg has a seasonal temperature swing of 42°F / from 37°F in January to 79°F in July. Total annual precipitation is 48.1 inches, with April being the wettest month (5.1") and July the driest (2.9").

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