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Weather & Climate in Ulm, AR
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Ulm enjoys a temperate climate with an average annual temperature of 62°F (16°C). Winters average 40°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 55.1 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 208 feet.
Temperature
40°F Jan (5°C)
81°F Jul (27°C)
| Annual Average | 61.5°F |
| 14% above US avg | |
| January Average | 40°F (5°C) |
| July Average | 81°F (27°C) |
| Sunny Days | 301 days/yr |
Geography
| Elevation | 208 ft (63 m) |
| Area | 0.3 sq mi (0.6 km²) |
| Population Density | 646/sq mi |
| Coordinates | 34.5762°N, 91.4617°W |
| Timezone | America/Chicago |
| County | Monroe County County |
| Nearest Airport | Pinebluff Regional/Grider Field (PBF) 39 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 43.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Very Low |
| Risk Score | 36.5 / 100 |
| Social Vulnerability | 91.0 / 100 |
| Community Resilience | 43.7 / 100 |
Hazard Breakdown
| Tornado | Relatively Low |
| Hurricane | Very Low |
| Earthquake | Relatively Low |
| Wildfire | Very Low |
| Flood | Very Low |
| Hail | Relatively Low |
| Strong Wind | Relatively Low |
| Heat Wave | Relatively Low |
| Winter Weather | Very Low |
| Lightning | Relatively Low |
| Ice Storm | Relatively Moderate |
| Drought | Relatively Low |
| Cold Wave | Very Low |
| Landslide | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Earthquake History
235 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 | 112 km | 3 km |
| May 4, 2001 | 8 km NNW of Holland, Arkansas | M4.3 | 106 km | 8 km |
| Feb 18, 2011 | 4 km NNE of Greenbrier, Arkansas | M4.1 | 114 km | 6 km |
| Oct 29, 2012 | 8 km SW of Parkin, Arkansas | M3.9 | 103 km | 21 km |
| Apr 8, 2011 | 3 km NE of Greenbrier, Arkansas | M3.9 | 112 km | 6 km |
| Feb 18, 2011 | 3 km NNE of Greenbrier, Arkansas | M3.9 | 112 km | 5 km |
| Jun 4, 2014 | 3 km ESE of Fairfield Bay, Arkansas | M3.8 | 132 km | 0 km |
| Feb 17, 2011 | 4 km NNE of Greenbrier, Arkansas | M3.8 | 113 km | 6 km |
| Apr 7, 2011 | 2 km NE of Greenbrier, Arkansas | M3.7 | 112 km | 6 km |
| Feb 23, 2013 | 7 km SW of Trumann, Arkansas | M3.7 | 143 km | 14 km |
| Feb 28, 2011 | 4 km NNE of Greenbrier, Arkansas | M3.6 | 114 km | 4 km |
| Feb 20, 2011 | 3 km NNE of Greenbrier, Arkansas | M3.6 | 113 km | 5 km |
| Feb 25, 2011 | 4 km NNE of Greenbrier, Arkansas | M3.5 | 114 km | 6 km |
| Mar 9, 2011 | 1 km NW of Greenbrier, Arkansas | M3.5 | 113 km | 6 km |
| Mar 3, 2011 | 0 km N of Greenbrier, Arkansas | M3.5 | 112 km | 7 km |
| Apr 8, 2011 | 2 km NNE of Greenbrier, Arkansas | M3.5 | 113 km | 6 km |
| Feb 16, 2011 | 4 km NNE of Greenbrier, Arkansas | M3.5 | 113 km | 7 km |
| Feb 26, 2011 | 5 km SSW of Guy, Arkansas | M3.4 | 112 km | 3 km |
| Feb 21, 2011 | 3 km N of Greenbrier, Arkansas | M3.4 | 114 km | 6 km |
| May 24, 2013 | 16 km WSW of Center Ridge, Arkansas | M3.4 | 140 km | 6 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tornado History
536 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF4. Total: 172 fatalities, 2,144 injuries.
| Date | Rating | Distance | Path | Fatalities |
| Mar 1, 1997 | EF4 | 82 km | 11.0 mi | 5 |
| Mar 1, 1997 | EF4 | 97 km | 14.0 mi | 10 |
| May 26, 1973 | EF4 | 78 km | 54.8 mi | 3 |
| Apr 3, 1968 | EF4 | 81 km | 33.7 mi | 5 |
| Mar 21, 1952 | EF4 | 51 km | 7.6 mi | 2 |
| Mar 21, 1952 | EF4 | 51 km | 13.1 mi | 29 |
| Mar 21, 1952 | EF4 | 75 km | 14.6 mi | 50 |
| Mar 31, 2023 | EF3 | 95 km | 34.2 mi | 0 |
| Mar 31, 2023 | EF3 | 81 km | 72.6 mi | 4 |
| Dec 23, 2015 | EF3 | 94 km | 61.6 mi | 2 |
| Apr 30, 2010 | EF3 | 98 km | 7.7 mi | 0 |
| May 10, 2008 | EF3 | 15 km | 14.1 mi | 0 |
| Feb 24, 2007 | EF3 | 97 km | 29.1 mi | 0 |
| Apr 2, 2006 | EF3 | 81 km | 38.0 mi | 0 |
| May 4, 2003 | EF3 | 95 km | 34.9 mi | 0 |
| May 4, 2003 | EF3 | 61 km | 43.0 mi | 0 |
| Dec 18, 2002 | EF3 | 98 km | 9.8 mi | 1 |
| Feb 24, 2001 | EF3 | 100 km | 42.0 mi | 0 |
| Jan 21, 1999 | EF3 | 21 km | 16.0 mi | 0 |
| Jan 21, 1999 | EF3 | 35 km | 39.0 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 | — | — | 149 km |
Source: NOAA/NCEI Historical Tsunami Database.
Wildfire History
7 wildfires (100+ acres) recorded within 100 km. Largest: UNNAMED (3,938 acres, 2000).
| Year | Name | Acres Burned | Distance |
| 2000 | UNNAMED | 3,938 | 80 km |
| 2010 | CAMP | 2,772 | 81 km |
| 2006 | UNNAMED | 1,334 | 75 km |
| 2007 | UNNAMED | 1,314 | 95 km |
| 2007 | UNNAMED | 1,194 | 31 km |
| 2007 | UNNAMED | 627 | 33 km |
| 2018 | UNNAMED | 599 | 72 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 40°F (5°C) | 3.6 in | Coldest |
| February | 44°F (7°C) | 4.1 in | |
| March | 53°F (12°C) | 5.2 in | |
| April | 62°F (17°C) | 5.2 in | Wettest |
| May | 70°F (21°C) | 5.2 in | |
| June | 78°F (26°C) | 3.8 in | |
| July | 81°F (27°C) | 3.4 in | Warmest |
| August | 80°F (27°C) | 2.8 in | Driest |
| September | 74°F (23°C) | 3.4 in | |
| October | 63°F (17°C) | 3.5 in | |
| November | 52°F (11°C) | 4.9 in | |
| December | 44°F (6°C) | 5.1 in |
Ulm has a seasonal temperature swing of 41°F / from 40°F in January to 81°F in July. Total annual precipitation is 50.1 inches, with April being the wettest month (5.2") and August the driest (2.8").