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Weather & Climate in Lewis Run, PA
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Lewis Run has a cool climate with an average annual temperature of 45°F (7°C). Winters average 22°F in January while summers reach 67°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 49.6 inches (wetter than the 38-inch national average). The area receives 75.2 inches of snow annually, making winter weather a significant factor for residents. Air quality is rated Good with a median AQI of 40. The city sits at an elevation of 1,592 feet.
Temperature
22°F Jan (-6°C)
67°F Jul (20°C)
| Annual Average | 45.3°F |
| 16% below US avg | |
| January Average | 22°F (-6°C) |
| July Average | 67°F (20°C) |
| Sunny Days | 275 days/yr |
Geography
| Elevation | 1,592 ft (485 m) |
| Area | 0.7 sq mi (1.8 km²) |
| Population Density | 314/sq mi |
| Coordinates | 41.8676°N, 78.6540°W |
| Timezone | America/New_York |
| County | McKean County County |
| Nearest Airport | Bradford Regional (BFD) 5 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 40.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 53.8 / 100 |
| Social Vulnerability | 62.3 / 100 |
| Community Resilience | 64.7 / 100 |
Hazard Breakdown
| Tornado | Very Low |
| Hurricane | Relatively Low |
| Earthquake | Very Low |
| Wildfire | Very Low |
| Flood | Relatively Moderate |
| Hail | Very Low |
| Strong Wind | Relatively Low |
| Heat Wave | Very Low |
| Winter Weather | Relatively Moderate |
| Lightning | Relatively Moderate |
| Ice Storm | Very Low |
| Drought | No Rating |
| Cold Wave | Relatively Low |
| Landslide | Relatively Low |
| Avalanche | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Earthquake History
10 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 | 150 km | 5 km |
| Feb 6, 2023 | 1 km NE of West Seneca, New York | M3.8 | 111 km | 6 km |
| Feb 3, 2001 | 6 km W of Bath, New York | M3.2 | 117 km | 0 km |
| May 25, 1995 | 3 km NW of Amherst, New York | M3.0 | 126 km | 5 km |
| Jun 16, 2004 | 11 km NNW of Angola on the Lake, New York | M2.9 | 105 km | 6 km |
| Jun 5, 2009 | 4 km SSE of Attica, New York | M2.9 | 112 km | 5 km |
| Mar 8, 2008 | 5 km ENE of Clarence Center, New York | M2.7 | 130 km | 6 km |
| Mar 15, 2022 | 5 km SSW of Warsaw, New York | M2.6 | 101 km | 5 km |
| Dec 17, 1990 | 5 km SSE of Middleboro, Pennsylvania | M2.5 | 122 km | 5 km |
| Jan 25, 1999 | New York | M2.5 | 117 km | 3 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tornado History
158 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF4. Total: 15 fatalities, 149 injuries.
| Date | Rating | Distance | Path | Fatalities |
| May 31, 1985 | EF4 | 41 km | 29.0 mi | 4 |
| May 31, 1985 | EF4 | 88 km | 29.0 mi | 7 |
| May 31, 1985 | EF4 | 77 km | 69.0 mi | 0 |
| Jul 21, 2003 | EF3 | 60 km | 2.5 mi | 0 |
| May 31, 1985 | EF3 | 51 km | 13.0 mi | 0 |
| May 31, 1985 | EF3 | 72 km | 17.0 mi | 0 |
| May 31, 1985 | EF3 | 96 km | 8.0 mi | 0 |
| May 2, 1983 | EF3 | 86 km | 28.0 mi | 2 |
| Aug 19, 1970 | EF3 | 91 km | 2.3 mi | 0 |
| Jun 20, 1969 | EF3 | 83 km | 84.1 mi | 0 |
| Jul 24, 1967 | EF3 | 61 km | 11.4 mi | 0 |
| Sep 3, 1963 | EF3 | 50 km | 8.4 mi | 0 |
| May 15, 1961 | EF3 | 26 km | 3.0 mi | 0 |
| Jul 10, 2024 | EF2 | 86 km | 3.2 mi | 0 |
| Jul 28, 2022 | EF2 | 88 km | 10.0 mi | 0 |
| Apr 14, 2019 | EF2 | 53 km | 18.0 mi | 0 |
| Oct 2, 2018 | EF2 | 91 km | 4.1 mi | 0 |
| Jul 20, 2017 | EF2 | 99 km | 6.1 mi | 0 |
| Nov 14, 2011 | EF2 | 91 km | 2.9 mi | 0 |
| Nov 14, 2011 | EF2 | 90 km | 4.1 mi | 0 |
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).
Wildfire History
6 wildfires (100+ acres) recorded within 100 km. Largest: WOODRUFF (757 acres, 2009).
| Year | Name | Acres Burned | Distance |
| 2009 | WOODRUFF | 757 | 97 km |
| 2018 | FIELDS RUN | 711 | 99 km |
| 2006 | FIVE MILE FIRE | 658 | 87 km |
| 1990 | UNNAMED | 628 | 78 km |
| 2021 | UNNAMED | 586 | 66 km |
| 2006 | BEAR TRAP | 561 | 96 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 22°F (-6°C) | 2.8 in | Coldest |
| February | 23°F (-5°C) | 2.6 in | Driest |
| March | 32°F (-0°C) | 3.3 in | |
| April | 43°F (6°C) | 3.4 in | |
| May | 54°F (12°C) | 3.9 in | |
| June | 62°F (17°C) | 4.9 in | Wettest |
| July | 67°F (20°C) | 4.3 in | Warmest |
| August | 65°F (18°C) | 4.0 in | |
| September | 58°F (14°C) | 4.2 in | |
| October | 47°F (8°C) | 3.4 in | |
| November | 37°F (3°C) | 3.8 in | |
| December | 26°F (-3°C) | 3.5 in |
Lewis Run has a seasonal temperature swing of 45°F / from 22°F in January to 67°F in July. Total annual precipitation is 44.0 inches, with June being the wettest month (4.9") and February the driest (2.6").