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Weather & Climate in Unionville, NC
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Unionville enjoys a temperate climate with an average annual temperature of 61°F (16°C). Winters average 42°F in January while summers reach 80°F in July. The area gets 320 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 37.9 inches. Air quality is rated Good with a median AQI of 40. The city sits at an elevation of 572 feet.
Temperature
42°F Jan (6°C)
80°F Jul (27°C)
| Annual Average | 61.2°F |
| 13% above US avg | |
| January Average | 42°F (6°C) |
| July Average | 80°F (27°C) |
| Sunny Days | 320 days/yr |
Geography
| Elevation | 572 ft (174 m) |
| Area | 29.3 sq mi (75.8 km²) |
| Population Density | 233/sq mi |
| Coordinates | 35.0785°N, 80.5171°W |
| Timezone | America/New_York |
| County | Mecklenburg County County |
| Nearest Airport | Concord-Padgett Regional (USA) 24 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 40.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively High |
| Risk Score | 97.1 / 100 |
| Social Vulnerability | 17.9 / 100 |
| Community Resilience | 59.7 / 100 |
Hazard Breakdown
| Tornado | Relatively High |
| Hurricane | Relatively Moderate |
| Earthquake | Relatively Moderate |
| Wildfire | Very Low |
| Flood | Relatively High |
| Hail | Relatively High |
| Strong Wind | Relatively High |
| Heat Wave | Relatively Moderate |
| Winter Weather | Relatively High |
| Lightning | Relatively High |
| Ice Storm | Relatively High |
| Drought | Very Low |
| Cold Wave | Relatively Moderate |
| Landslide | Relatively Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Earthquake History
25 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M3.9.
| Apr 13, 1998 | 9 km S of Kershaw, South Carolina | M3.9 | 68 km | 7 km |
| Jun 29, 2022 | 6 km E of Elgin, South Carolina | M3.6 | 103 km | 3 km |
| Jun 29, 2022 | 6 km E of Elgin, South Carolina | M3.5 | 103 km | 3 km |
| Jun 26, 2022 | 6 km E of Elgin, South Carolina | M3.4 | 103 km | 4 km |
| May 9, 2022 | 5 km ESE of Elgin, South Carolina | M3.3 | 104 km | 4 km |
| Jun 5, 1998 | 4 km SSE of Mooresville, North Carolina | M3.2 | 58 km | 9 km |
| Aug 4, 2007 | 12 km ENE of Lake Lure, North Carolina | M3.0 | 150 km | 9 km |
| Jan 29, 1994 | 12 km NNE of Alcolu, South Carolina | M2.9 | 141 km | 2 km |
| Mar 21, 2011 | 9 km S of Cordova, North Carolina | M2.9 | 69 km | 8 km |
| Feb 18, 2005 | 7 km ENE of Irmo, South Carolina | M2.9 | 120 km | 1 km |
| May 10, 2022 | 5 km E of Elgin, South Carolina | M2.8 | 103 km | 2 km |
| Jul 12, 1993 | 5 km SW of Greensboro, North Carolina | M2.7 | 124 km | 5 km |
| Mar 21, 2004 | 16 km ENE of Lake Lure, North Carolina | M2.7 | 147 km | 9 km |
| Jun 10, 2018 | 2 km NE of Hays, North Carolina | M2.7 | 142 km | 2 km |
| Mar 9, 2024 | 5 km E of Elgin, South Carolina | M2.7 | 104 km | 3 km |
| Aug 17, 2021 | 6 km N of Morganton, North Carolina | M2.7 | 133 km | 6 km |
| Jan 5, 2022 | 5 km SW of Lugoff, South Carolina | M2.6 | 101 km | 0 km |
| Apr 26, 2025 | 6 km E of Elgin, South Carolina | M2.6 | 104 km | 2 km |
| May 10, 2022 | 6 km E of Elgin, South Carolina | M2.6 | 103 km | 2 km |
| Jan 3, 2022 | 5 km S of Lugoff, South Carolina | M2.5 | 102 km | 2 km |
Source: USGS Earthquake Catalog (M2.5+, 1990-2025). Sorted by magnitude.
Hurricane History
13 hurricanes (Category 1+) recorded within 500 km since 1980. Strongest on record: Category 4.
| Year | Name | Category | Max Wind | Closest |
| 2022 | Ian | Category 1 | 81 mph | 232 km |
| 2020 | Isaias | Category 1 | 92 mph | 227 km |
| 2019 | Dorian | Category 3 | 109 mph | 297 km |
| 2018 | Florence | Category 1 | 92 mph | 228 km |
| 2016 | Matthew | Category 1 | 92 mph | 224 km |
| 2004 | Charley | Category 1 | 81 mph | 219 km |
| 2004 | Gaston | Category 1 | 75 mph | 246 km |
| 1999 | Floyd | Category 2 | 104 mph | 271 km |
| 1998 | Bonnie | Category 3 | 115 mph | 268 km |
| 1996 | Fran | Category 3 | 115 mph | 166 km |
| 1996 | Bertha | Category 2 | 104 mph | 263 km |
| 1989 | Hugo | Category 4 | 138 mph | 68 km |
| 1984 | Diana | Category 4 | 132 mph | 236 km |
Source: NOAA IBTrACS (Category 1+, 1980-2026).
Tornado History
349 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF4. Total: 28 fatalities, 822 injuries.
| Date | Rating | Distance | Path | Fatalities |
| May 5, 1989 | EF4 | 22 km | 13.0 mi | 1 |
| Mar 28, 1984 | EF4 | 78 km | 7.0 mi | 0 |
| Mar 28, 1984 | EF4 | 97 km | 40.0 mi | 4 |
| Mar 28, 1984 | EF4 | 62 km | 4.0 mi | 0 |
| Mar 28, 1984 | EF4 | 85 km | 17.0 mi | 7 |
| Apr 8, 1957 | EF4 | 50 km | 121.4 mi | 4 |
| Sep 7, 2004 | EF3 | 90 km | 7.0 mi | 0 |
| Mar 27, 1994 | EF3 | 51 km | 18.5 mi | 0 |
| Oct 18, 1990 | EF3 | 18 km | 12.0 mi | 0 |
| Apr 18, 1969 | EF3 | 81 km | 77.3 mi | 0 |
| Oct 7, 1965 | EF3 | 89 km | 1.0 mi | 1 |
| Mar 31, 2022 | EF2 | 26 km | 7.2 mi | 0 |
| May 5, 2020 | EF2 | 71 km | 14.0 mi | 0 |
| Apr 13, 2020 | EF2 | 54 km | 0.2 mi | 0 |
| Feb 6, 2020 | EF2 | 82 km | 8.7 mi | 0 |
| Feb 6, 2020 | EF2 | 47 km | 6.2 mi | 0 |
| Jan 11, 2020 | EF2 | 72 km | 0.6 mi | 0 |
| May 24, 2017 | EF2 | 84 km | 3.2 mi | 0 |
| Mar 3, 2012 | EF2 | 25 km | 2.9 mi | 0 |
| Nov 16, 2011 | EF2 | 78 km | 12.5 mi | 2 |
Source: NOAA Storm Prediction Center (EF0+, 1950-2024, US only).
Wildfire History
20 wildfires (100+ acres) recorded within 100 km. Largest: BURNING UNIT (5,567 acres, 2010).
| Year | Name | Acres Burned | Distance |
| 2010 | BURNING UNIT | 5,567 | 94 km |
| 1991 | UNNAMED | 3,968 | 77 km |
| 1991 | UNNAMED | 3,094 | 68 km |
| 1985 | UNNAMED | 2,743 | 76 km |
| 2008 | 05/05 RX BURN | 2,351 | 56 km |
| 2007 | 06-09 RX BURN | 2,054 | 60 km |
| 2022 | SCCRR-FY22-RX-PRESCRIBED FIRE | 2,039 | 63 km |
| 2000 | UNNAMED | 1,989 | 42 km |
| 2016 | UNNAMED | 1,964 | 95 km |
| 2009 | UNNAMED | 1,918 | 94 km |
| 1998 | 981406 | 1,892 | 66 km |
| 1994 | CM 15 16 17 | 1,871 | 66 km |
| 2021 | SLATES CHURCH FIRE | 1,824 | 96 km |
| 1994 | COMP 1112 | 1,798 | 63 km |
| 1998 | 980803 | 1,780 | 61 km |
| 2000 | 2000 1003 | 1,768 | 63 km |
| 1999 | 19990505 | 1,756 | 56 km |
| 2016 | COUNTY LINE ROAD FIRE | 1,704 | 92 km |
| 1992 | COMP 15 | 1,697 | 64 km |
| 2018 | SCCRR-FY18-RX-COMP-14 | 1,687 | 65 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 42°F (6°C) | 4.3 in | Coldest |
| February | 44°F (7°C) | 3.7 in | |
| March | 52°F (11°C) | 4.7 in | Wettest |
| April | 60°F (15°C) | 3.0 in | Driest |
| May | 68°F (20°C) | 3.7 in | |
| June | 75°F (24°C) | 4.1 in | |
| July | 80°F (27°C) | 4.6 in | Warmest |
| August | 77°F (25°C) | 4.3 in | |
| September | 72°F (22°C) | 4.0 in | |
| October | 60°F (16°C) | 4.0 in | |
| November | 51°F (11°C) | 3.3 in | |
| December | 44°F (6°C) | 3.5 in |
Unionville has a seasonal temperature swing of 37°F / from 42°F in January to 80°F in July. Total annual precipitation is 47.2 inches, with March being the wettest month (4.7") and April the driest (3.0").