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Weather & Climate in West Hills, PA
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
West Hills experiences four distinct seasons with an average annual temperature of 50°F (10°C). Winters average 26°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 44.3 inches. Air quality is rated Good with a median AQI of 40. The city sits at an elevation of 1,096 feet.
Temperature
26°F Jan (-3°C)
72°F Jul (22°C)
| Annual Average | 49.6°F |
| 8% below US avg | |
| January Average | 26°F (-3°C) |
| July Average | 72°F (22°C) |
| Sunny Days | 275 days/yr |
Geography
| Elevation | 1,096 ft (334 m) |
| Area | 1.4 sq mi (3.5 km²) |
| Population Density | 467/sq mi |
| Coordinates | 40.8429°N, 79.5441°W |
| Timezone | America/New_York |
| County | Armstrong County County |
| Nearest Airport | Pittsburgh/Butler Regional (BTP) 22 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 40.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 69.3 / 100 |
| Social Vulnerability | 42.9 / 100 |
| Community Resilience | 86.6 / 100 |
Hazard Breakdown
| Tornado | Relatively Low |
| Hurricane | Very Low |
| Earthquake | Very Low |
| Wildfire | Very Low |
| Flood | Relatively Moderate |
| Hail | Relatively Low |
| Strong Wind | Relatively Low |
| Heat Wave | Very Low |
| Winter Weather | Very Low |
| Lightning | Relatively Moderate |
| Ice Storm | Relatively Low |
| Drought | No Rating |
| Cold Wave | Very Low |
| Landslide | Relatively Low |
| Avalanche | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Earthquake History
5 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 | 101 km | 5 km |
| Mar 30, 2024 | 2 km SSW of Maple Ridge, Ohio | M3.0 | 127 km | 6 km |
| Aug 7, 2000 | 2 km S of Limaville, Ohio | M2.9 | 136 km | 5 km |
| Sep 11, 2024 | 4 km WNW of Claysville, Pennsylvania | M2.5 | 110 km | 4 km |
| Dec 17, 1990 | 5 km SSE of Middleboro, Pennsylvania | M2.5 | 133 km | 5 km |
Source: USGS Earthquake Catalog (M2.5+, 1990-2025). Sorted by magnitude.
Tornado History
298 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF4. Total: 27 fatalities, 657 injuries.
| Date | Rating | Distance | Path | Fatalities |
| Jun 2, 1998 | EF4 | 92 km | 36.5 mi | 0 |
| May 31, 1985 | EF4 | 79 km | 29.0 mi | 7 |
| May 31, 1985 | EF4 | 82 km | 69.0 mi | 0 |
| May 31, 1985 | EF4 | 98 km | 29.0 mi | 4 |
| Jun 3, 1980 | EF4 | 27 km | 11.8 mi | 0 |
| May 31, 1985 | EF3 | 78 km | 39.0 mi | 9 |
| May 31, 1985 | EF3 | 100 km | 8.0 mi | 0 |
| May 31, 1985 | EF3 | 93 km | 17.0 mi | 0 |
| Jul 11, 1976 | EF3 | 55 km | 11.8 mi | 1 |
| May 2, 1972 | EF3 | 90 km | 7.9 mi | 0 |
| Sep 3, 1963 | EF3 | 94 km | 8.4 mi | 0 |
| Aug 3, 1963 | EF3 | 65 km | 0.1 mi | 2 |
| Jun 26, 2024 | EF2 | 51 km | 10.8 mi | 0 |
| May 11, 2024 | EF2 | 77 km | 5.8 mi | 0 |
| Aug 25, 2023 | EF2 | 99 km | 2.0 mi | 0 |
| Mar 31, 2022 | EF2 | 14 km | 8.6 mi | 0 |
| Oct 2, 2018 | EF2 | 79 km | 1.6 mi | 0 |
| Oct 2, 2018 | EF2 | 46 km | 4.1 mi | 0 |
| Mar 23, 2011 | EF2 | 65 km | 9.0 mi | 0 |
| May 25, 2004 | EF2 | 93 km | 7.0 mi | 0 |
Source: NOAA Storm Prediction Center (EF0+, 1950-2024, US only).
Wildfire History
2 wildfires (100+ acres) recorded within 100 km. Largest: UNNAMED (628 acres, 1990).
| Year | Name | Acres Burned | Distance |
| 1990 | UNNAMED | 628 | 76 km |
| 2021 | UNNAMED | 586 | 87 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 26°F (-3°C) | 2.6 in | Coldest |
| February | 28°F (-2°C) | 2.4 in | Driest |
| March | 37°F (3°C) | 3.4 in | |
| April | 48°F (9°C) | 3.5 in | |
| May | 58°F (14°C) | 4.0 in | |
| June | 66°F (19°C) | 4.5 in | Wettest |
| July | 72°F (22°C) | 4.3 in | Warmest |
| August | 69°F (20°C) | 4.0 in | |
| September | 62°F (17°C) | 3.7 in | |
| October | 51°F (10°C) | 3.0 in | |
| November | 41°F (5°C) | 3.4 in | |
| December | 31°F (-1°C) | 3.2 in |
West Hills has a seasonal temperature swing of 45°F / from 26°F in January to 72°F in July. Total annual precipitation is 42.0 inches, with June being the wettest month (4.5") and February the driest (2.4").