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Weather & Climate in Unionville CDP (Beaver County), PA
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Unionville CDP (Beaver County) experiences four distinct seasons with an average annual temperature of 50°F (10°C). Winters average 28°F in January while summers reach 72°F in July. The area gets 275 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 40.3 inches. Air quality is rated Good with a median AQI of 40. The city sits at an elevation of 925 feet.
Temperature
28°F Jan (-2°C)
72°F Jul (22°C)
| Annual Average | 50.4°F |
| 7% below US avg | |
| January Average | 28°F (-2°C) |
| July Average | 72°F (22°C) |
| Sunny Days | 275 days/yr |
Geography
| Elevation | 925 ft (282 m) |
| Area | 0.5 sq mi (1.4 km²) |
| Population Density | 364/sq mi |
| Coordinates | 40.7459°N, 80.2107°W |
| Timezone | America/New_York |
| County | Beaver County County |
| Nearest Airport | Pittsburgh/Butler Regional (BTP) 14 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 40.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 75.3 / 100 |
| Social Vulnerability | 37.7 / 100 |
| Community Resilience | 91.8 / 100 |
Hazard Breakdown
| Tornado | Relatively Low |
| Hurricane | Very Low |
| Earthquake | Very Low |
| Wildfire | Very Low |
| Flood | Relatively Moderate |
| Hail | Relatively Moderate |
| Strong Wind | Relatively Moderate |
| Heat Wave | Relatively Low |
| Winter Weather | Relatively Low |
| Lightning | Relatively Moderate |
| Ice Storm | Relatively Moderate |
| Drought | No Rating |
| Cold Wave | Very Low |
| Landslide | Relatively Low |
| Avalanche | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Earthquake History
34 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.5.
| Sep 25, 1998 | 2 km SW of Adamsville, Pennsylvania | M4.5 | 85 km | 5 km |
| Jun 10, 2019 | 1 km NW of Timberlake, Ohio | M4.0 | 147 km | 2 km |
| Jan 26, 2001 | 8 km NNW of Edgewood, Ohio | M3.9 | 142 km | 5 km |
| Mar 12, 2007 | Ohio | M3.7 | 115 km | 5 km |
| Aug 28, 2023 | 7 km SE of Madison, Ohio | M3.6 | 127 km | 5 km |
| Jun 30, 2003 | 6 km NW of Perry, Ohio | M3.6 | 143 km | 5 km |
| Oct 16, 1993 | 8 km SSE of Madison, Ohio | M3.6 | 125 km | 5 km |
| Jun 20, 2006 | 9 km WNW of North Perry, Ohio | M3.5 | 149 km | 5 km |
| Jun 3, 2001 | 3 km N of Edgewood, Ohio | M3.4 | 137 km | 5 km |
| Jan 26, 1991 | 1 km NNE of Mayfield Heights, Ohio | M3.4 | 136 km | 5 km |
| Jun 3, 2017 | 1 km WNW of Batesville, Ohio | M3.4 | 130 km | 2 km |
| Jun 30, 2004 | 2 km WNW of Madison, Ohio | M3.3 | 136 km | 5 km |
| Jul 1, 2013 | 5 km NNW of Fairport Harbor, Ohio | M3.2 | 147 km | 5 km |
| Jan 9, 2008 | 6 km WNW of Mentor-on-the-Lake, Ohio | M3.1 | 149 km | 5 km |
| Apr 22, 2025 | 3 km ESE of Buffalo, Ohio | M3.1 | 143 km | 5 km |
| Apr 24, 2025 | 3 km S of Pleasant City, Ohio | M3.1 | 149 km | 6 km |
| Apr 2, 2017 | 5 km W of Graysville, Ohio | M3.0 | 149 km | 4 km |
| Apr 25, 2010 | 2 km WNW of Madison, Ohio | M3.0 | 136 km | 5 km |
| Mar 30, 2024 | 2 km SSW of Maple Ridge, Ohio | M3.0 | 73 km | 6 km |
| May 9, 2025 | 3 km S of Pleasant City, Ohio | M2.9 | 149 km | 5 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tornado History
313 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF5. Total: 55 fatalities, 1,038 injuries.
| Date | Rating | Distance | Path | Fatalities |
| May 31, 1985 | EF5 | 94 km | 47.0 mi | 18 |
| May 31, 1985 | EF4 | 86 km | 56.2 mi | 16 |
| Jun 3, 1980 | EF4 | 42 km | 11.8 mi | 0 |
| May 31, 1985 | EF3 | 23 km | 39.0 mi | 9 |
| Oct 12, 1978 | EF3 | 60 km | 7.3 mi | 0 |
| Jul 11, 1976 | EF3 | 75 km | 11.8 mi | 1 |
| May 2, 1972 | EF3 | 81 km | 7.9 mi | 0 |
| May 8, 1969 | EF3 | 97 km | 2.0 mi | 1 |
| Aug 3, 1963 | EF3 | 55 km | 0.1 mi | 2 |
| Aug 5, 1956 | EF3 | 61 km | 0.1 mi | 2 |
| Mar 1, 1955 | EF3 | 70 km | 2.5 mi | 1 |
| Jun 26, 2024 | EF2 | 61 km | 10.8 mi | 0 |
| May 11, 2024 | EF2 | 54 km | 5.8 mi | 0 |
| May 7, 2024 | EF2 | 53 km | 15.3 mi | 0 |
| Aug 1, 2022 | EF2 | 85 km | 1.8 mi | 0 |
| Mar 31, 2022 | EF2 | 71 km | 8.6 mi | 0 |
| Oct 21, 2021 | EF2 | 63 km | 15.7 mi | 0 |
| Jul 29, 2021 | EF2 | 67 km | 6.2 mi | 0 |
| Jul 29, 2021 | EF2 | 92 km | 2.7 mi | 0 |
| Oct 2, 2018 | EF2 | 98 km | 4.1 mi | 0 |
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 28°F (-2°C) | 2.5 in | Coldest |
| February | 29°F (-2°C) | 2.2 in | Driest |
| March | 38°F (4°C) | 3.1 in | |
| April | 49°F (9°C) | 3.2 in | |
| May | 59°F (15°C) | 3.8 in | |
| June | 67°F (20°C) | 4.1 in | Wettest |
| July | 72°F (22°C) | 4.1 in | Warmest |
| August | 70°F (21°C) | 3.5 in | |
| September | 63°F (17°C) | 3.4 in | |
| October | 52°F (11°C) | 2.6 in | |
| November | 42°F (5°C) | 3.1 in | |
| December | 32°F (-0°C) | 2.9 in |
Unionville CDP (Beaver County) has a seasonal temperature swing of 45°F / from 28°F in January to 72°F in July. Total annual precipitation is 38.3 inches, with June being the wettest month (4.1") and February the driest (2.2").