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Weather & Climate in Morris Run, PA
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Morris Run experiences four distinct seasons with an average annual temperature of 47°F (8°C). Winters average 24°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 36.4 inches. The area receives 43.4 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 1,696 feet.
Temperature
24°F Jan (-5°C)
70°F Jul (21°C)
| Annual Average | 47.1°F |
| 13% below US avg | |
| January Average | 24°F (-5°C) |
| July Average | 70°F (21°C) |
| Sunny Days | 275 days/yr |
Geography
| Elevation | 1,696 ft (517 m) |
| Area | 0.8 sq mi (2.1 km²) |
| Population Density | 792/sq mi |
| Coordinates | 41.6762°N, 77.0187°W |
| Timezone | America/New_York |
| County | Tioga County County |
| Nearest Airport | Williamsport Regional (IPT) 30 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 40.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 59.8 / 100 |
| Social Vulnerability | 57.4 / 100 |
| Community Resilience | 65.3 / 100 |
Hazard Breakdown
| Tornado | Very Low |
| Hurricane | Relatively Low |
| Earthquake | Very Low |
| Wildfire | Very Low |
| Flood | Relatively Moderate |
| Hail | Very Low |
| Strong Wind | Relatively Moderate |
| Heat Wave | Very Low |
| Winter Weather | Relatively Moderate |
| Lightning | Relatively Moderate |
| Ice Storm | Relatively Low |
| Drought | No Rating |
| Cold Wave | Very Low |
| Landslide | Relatively Low |
| Avalanche | Relatively 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: M3.4.
| Jun 13, 2019 | 9 km N of Blain, Pennsylvania | M3.4 | 145 km | 27 km |
| Feb 3, 2001 | 6 km W of Bath, New York | M3.2 | 81 km | 0 km |
| Jun 10, 2025 | 10 km NW of Forksville, Pennsylvania | M2.8 | 32 km | 8 km |
| Mar 15, 2022 | 5 km SSW of Warsaw, New York | M2.6 | 147 km | 5 km |
| Jan 25, 1999 | New York | M2.5 | 136 km | 3 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tornado History
177 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF3. Total: 11 fatalities, 137 injuries.
| Date | Rating | Distance | Path | Fatalities |
| Jul 21, 2003 | EF3 | 80 km | 2.5 mi | 0 |
| Jun 2, 1998 | EF3 | 81 km | 26.0 mi | 2 |
| May 31, 1998 | EF3 | 84 km | 62.0 mi | 0 |
| May 31, 1985 | EF3 | 56 km | 19.0 mi | 6 |
| May 2, 1983 | EF3 | 54 km | 2.0 mi | 0 |
| May 2, 1983 | EF3 | 48 km | 15.0 mi | 0 |
| Jul 29, 1976 | EF3 | 57 km | 25.0 mi | 0 |
| Aug 30, 1955 | EF3 | 73 km | 1.0 mi | 0 |
| Apr 14, 2019 | EF2 | 75 km | 3.7 mi | 0 |
| Oct 2, 2018 | EF2 | 20 km | 2.2 mi | 0 |
| Jun 13, 2018 | EF2 | 28 km | 5.2 mi | 0 |
| Jul 8, 2014 | EF2 | 47 km | 6.7 mi | 0 |
| Apr 27, 2011 | EF2 | 62 km | 0.9 mi | 0 |
| Aug 28, 1990 | EF2 | 92 km | 2.5 mi | 0 |
| Aug 28, 1988 | EF2 | 80 km | 1.5 mi | 0 |
| Jul 6, 1984 | EF2 | 85 km | 0.3 mi | 0 |
| May 2, 1983 | EF2 | 46 km | 9.8 mi | 0 |
| Apr 17, 1982 | EF2 | 74 km | 4.0 mi | 0 |
| Aug 28, 1978 | EF2 | 89 km | 3.3 mi | 0 |
| Apr 14, 1974 | EF2 | 48 km | 12.8 mi | 0 |
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).
Wildfire History
6 wildfires (100+ acres) recorded within 100 km. Largest: BULL RUN (2,003 acres, 2008).
| Year | Name | Acres Burned | Distance |
| 2008 | BULL RUN | 2,003 | 37 km |
| 2009 | WOODRUFF | 757 | 41 km |
| 2018 | FIELDS RUN | 711 | 95 km |
| 2006 | FIVE MILE FIRE | 658 | 82 km |
| 2006 | OKOME ROAD | 573 | 44 km |
| 2006 | BEAR TRAP | 561 | 82 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 24°F (-5°C) | 2.0 in | Coldest, Driest |
| February | 24°F (-4°C) | 2.1 in | |
| March | 33°F (1°C) | 2.6 in | |
| April | 44°F (7°C) | 2.6 in | |
| May | 55°F (13°C) | 3.4 in | |
| June | 63°F (17°C) | 4.3 in | Wettest |
| July | 70°F (21°C) | 3.6 in | Warmest |
| August | 66°F (19°C) | 3.1 in | |
| September | 59°F (15°C) | 3.3 in | |
| October | 48°F (9°C) | 2.8 in | |
| November | 38°F (3°C) | 3.0 in | |
| December | 28°F (-2°C) | 2.5 in |
Morris Run has a seasonal temperature swing of 46°F / from 24°F in January to 70°F in July. Total annual precipitation is 35.1 inches, with June being the wettest month (4.3") and January the driest (2.0").