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Weather & Climate in Forestville CDP (Butler County), PA
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Forestville CDP (Butler County) experiences four distinct seasons with an average annual temperature of 48°F (9°C). Winters average 25°F in January while summers reach 70°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 45.2 inches. Air quality is rated Good with a median AQI of 40. The city sits at an elevation of 1,297 feet.
Temperature
25°F Jan (-4°C)
70°F Jul (21°C)
| Annual Average | 48.1°F |
| 11% below US avg | |
| January Average | 25°F (-4°C) |
| July Average | 70°F (21°C) |
| Sunny Days | 275 days/yr |
Geography
| Elevation | 1,297 ft (395 m) |
| Area | 0.9 sq mi (2.4 km²) |
| Population Density | 298/sq mi |
| Coordinates | 41.1021°N, 80.0014°W |
| Timezone | America/New_York |
| County | Mercer County County |
| Nearest Airport | Venango Regional (FKL) 20 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 40.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 77.7 / 100 |
| Social Vulnerability | 54.8 / 100 |
| Community Resilience | 75.5 / 100 |
Hazard Breakdown
| Tornado | Relatively Low |
| Hurricane | Relatively Low |
| Earthquake | Very Low |
| Wildfire | Very Low |
| Flood | Relatively Moderate |
| Hail | Relatively Moderate |
| Strong Wind | Relatively Moderate |
| Heat Wave | Very Low |
| Winter Weather | Relatively Moderate |
| Lightning | Relatively High |
| Ice Storm | Relatively Low |
| Drought | No Rating |
| Cold Wave | Very Low |
| Landslide | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Earthquake History
36 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 | 54 km | 5 km |
| Jun 10, 2019 | 1 km NW of Timberlake, Ohio | M4.0 | 137 km | 2 km |
| Jan 26, 2001 | 8 km NNW of Edgewood, Ohio | M3.9 | 115 km | 5 km |
| Mar 12, 2007 | Ohio | M3.7 | 117 km | 5 km |
| Jun 30, 2003 | 6 km NW of Perry, Ohio | M3.6 | 127 km | 5 km |
| Aug 28, 2023 | 7 km SE of Madison, Ohio | M3.6 | 107 km | 5 km |
| Oct 16, 1993 | 8 km SSE of Madison, Ohio | M3.6 | 107 km | 5 km |
| Jun 20, 2006 | 9 km WNW of North Perry, Ohio | M3.5 | 131 km | 5 km |
| Mar 15, 1992 | 15 km NW of North Perry, Ohio | M3.5 | 137 km | 5 km |
| Jan 26, 1991 | 1 km NNE of Mayfield Heights, Ohio | M3.4 | 131 km | 5 km |
| Jun 3, 2001 | 3 km N of Edgewood, Ohio | M3.4 | 110 km | 5 km |
| Jun 30, 2004 | 2 km WNW of Madison, Ohio | M3.3 | 117 km | 5 km |
| Jul 1, 2013 | 5 km NNW of Fairport Harbor, Ohio | M3.2 | 132 km | 5 km |
| Jan 9, 2008 | 6 km WNW of Mentor-on-the-Lake, Ohio | M3.1 | 138 km | 5 km |
| Mar 11, 2006 | 8 km NNW of Mentor-on-the-Lake, Ohio | M3.1 | 138 km | 5 km |
| Apr 25, 2010 | 2 km WNW of Madison, Ohio | M3.0 | 117 km | 5 km |
| Mar 30, 2024 | 2 km SSW of Maple Ridge, Ohio | M3.0 | 92 km | 6 km |
| Feb 23, 1995 | 3 km W of Ashtabula, Ohio | M2.9 | 110 km | 5 km |
| Aug 7, 2000 | 2 km S of Limaville, Ohio | M2.9 | 98 km | 5 km |
| Jan 4, 2022 | 3 km NW of Timberlake, Ohio | M2.8 | 139 km | 5 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tornado History
325 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF5. Total: 75 fatalities, 1,182 injuries.
| Date | Rating | Distance | Path | Fatalities |
| May 31, 1985 | EF5 | 97 km | 47.0 mi | 18 |
| May 31, 1985 | EF4 | 60 km | 56.2 mi | 16 |
| May 31, 1985 | EF4 | 92 km | 28.0 mi | 0 |
| May 31, 1985 | EF4 | 59 km | 29.0 mi | 7 |
| May 31, 1985 | EF4 | 93 km | 14.0 mi | 12 |
| Jun 3, 1980 | EF4 | 55 km | 11.8 mi | 0 |
| May 31, 1985 | EF3 | 50 km | 39.0 mi | 9 |
| May 31, 1985 | EF3 | 68 km | 23.0 mi | 2 |
| May 31, 1985 | EF3 | 78 km | 17.0 mi | 0 |
| May 31, 1985 | EF3 | 91 km | 15.0 mi | 0 |
| May 31, 1985 | EF3 | 71 km | 8.0 mi | 0 |
| Oct 12, 1978 | EF3 | 84 km | 7.3 mi | 0 |
| Jul 11, 1976 | EF3 | 94 km | 11.8 mi | 1 |
| May 2, 1972 | EF3 | 45 km | 7.9 mi | 0 |
| Jun 2, 1971 | EF3 | 86 km | 29.3 mi | 0 |
| Aug 3, 1963 | EF3 | 88 km | 0.1 mi | 2 |
| Aug 5, 1956 | EF3 | 59 km | 0.1 mi | 2 |
| Mar 1, 1955 | EF3 | 59 km | 2.5 mi | 1 |
| Jun 26, 2024 | EF2 | 84 km | 10.8 mi | 0 |
| May 11, 2024 | EF2 | 93 km | 5.8 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 | 65 km |
| 2021 | UNNAMED | 586 | 77 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 25°F (-4°C) | 2.5 in | Coldest |
| February | 27°F (-3°C) | 2.2 in | Driest |
| March | 36°F (2°C) | 3.2 in | |
| April | 47°F (8°C) | 3.3 in | |
| May | 57°F (14°C) | 3.8 in | |
| June | 66°F (19°C) | 4.5 in | Wettest |
| July | 70°F (21°C) | 4.2 in | Warmest |
| August | 69°F (20°C) | 3.9 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 | 30°F (-1°C) | 3.1 in |
Forestville CDP (Butler County) has a seasonal temperature swing of 45°F / from 25°F in January to 70°F in July. Total annual precipitation is 40.6 inches, with June being the wettest month (4.5") and February the driest (2.2").