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Weather & Climate in Jamison City, PA
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Jamison City experiences four distinct seasons with an average annual temperature of 48°F (9°C). Winters average 25°F in January while summers reach 69°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 48.4 inches (wetter than the 38-inch national average). The area receives 46.0 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 1,022 feet.
Temperature
25°F Jan (-4°C)
69°F Jul (21°C)
| Annual Average | 47.6°F |
| 12% below US avg | |
| January Average | 25°F (-4°C) |
| July Average | 69°F (21°C) |
| Sunny Days | 275 days/yr |
Geography
| Elevation | 1,022 ft (312 m) |
| Area | 0.4 sq mi (1.0 km²) |
| Population Density | 643/sq mi |
| Coordinates | 41.2973°N, 76.3703°W |
| Timezone | America/New_York |
| County | Sullivan County County |
| Nearest Airport | Williamsport Regional (IPT) 29 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 40.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Very Low |
| Risk Score | 10.7 / 100 |
| Social Vulnerability | 72.2 / 100 |
| Community Resilience | 97.2 / 100 |
Hazard Breakdown
| Tornado | Very Low |
| Hurricane | Relatively Low |
| Earthquake | Very Low |
| Wildfire | Very Low |
| Flood | Relatively Low |
| Hail | Very Low |
| Strong Wind | Very Low |
| Heat Wave | Very Low |
| Winter Weather | Relatively Low |
| Lightning | Very Low |
| Ice Storm | Very 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
17 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.6.
| Jan 16, 1994 | 2 km W of Sinking Spring, Pennsylvania | M4.6 | 111 km | 5 km |
| Jan 16, 1994 | 0 km E of Sinking Spring, Pennsylvania | M4.2 | 112 km | 5 km |
| Jun 13, 2019 | 9 km N of Blain, Pennsylvania | M3.4 | 136 km | 27 km |
| Feb 3, 2001 | 6 km W of Bath, New York | M3.2 | 144 km | 0 km |
| Aug 26, 2003 | 4 km NNW of Milford, New Jersey | M3.1 | 131 km | 3 km |
| Jun 3, 2010 | 4 km ENE of Franklintown, Pennsylvania | M3.1 | 144 km | 2 km |
| Nov 14, 1997 | 0 km S of Rothsville, Pennsylvania | M3.0 | 128 km | 5 km |
| Apr 24, 2009 | 1 km S of Franklintown, Pennsylvania | M2.9 | 148 km | 1 km |
| Jan 16, 1994 | 0 km SSE of Sinking Spring, Pennsylvania | M2.9 | 113 km | 5 km |
| Jun 10, 2025 | 10 km NW of Forksville, Pennsylvania | M2.8 | 39 km | 8 km |
| May 10, 1993 | 1 km NW of Whitfield, Pennsylvania | M2.8 | 110 km | 5 km |
| Oct 25, 2009 | 4 km ENE of Franklintown, Pennsylvania | M2.8 | 143 km | 1 km |
| Mar 11, 1995 | 0 km ENE of Landisville, Pennsylvania | M2.7 | 133 km | 5 km |
| Jan 18, 1994 | 3 km SE of Clay, Pennsylvania | M2.6 | 123 km | 5 km |
| Oct 28, 1996 | 2 km W of Reinholds, Pennsylvania | M2.6 | 116 km | 5 km |
| May 7, 1994 | 2 km SW of Sinking Spring, Pennsylvania | M2.5 | 113 km | 5 km |
| Jan 8, 1995 | 1 km WSW of Montrose Manor, Pennsylvania | M2.5 | 115 km | 5 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Hurricane History
1 hurricane (Category 1+) recorded within 500 km since 1980. Strongest on record: Category 1.
| Year | Name | Category | Max Wind | Closest |
| 1985 | Gloria | Category 1 | 86 mph | 269 km |
Source: NOAA IBTrACS (Category 1+, 1980–2026).
Tornado History
248 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF3. Total: 10 fatalities, 170 injuries.
| Date | Rating | Distance | Path | Fatalities |
| Jun 2, 1998 | EF3 | 45 km | 26.0 mi | 2 |
| May 31, 1998 | EF3 | 88 km | 62.0 mi | 0 |
| May 31, 1998 | EF3 | 99 km | 8.3 mi | 0 |
| May 31, 1985 | EF3 | 67 km | 19.0 mi | 6 |
| May 2, 1983 | EF3 | 85 km | 15.0 mi | 0 |
| May 2, 1983 | EF3 | 79 km | 2.0 mi | 0 |
| Jul 26, 1981 | EF3 | 89 km | 3.3 mi | 0 |
| Jul 29, 1976 | EF3 | 76 km | 25.0 mi | 0 |
| Jun 18, 1970 | EF3 | 100 km | 1.9 mi | 1 |
| Apr 14, 2019 | EF2 | 12 km | 3.7 mi | 0 |
| Oct 2, 2018 | EF2 | 73 km | 2.2 mi | 0 |
| Jun 13, 2018 | EF2 | 54 km | 5.2 mi | 0 |
| Jun 13, 2018 | EF2 | 44 km | 2.9 mi | 0 |
| Feb 25, 2017 | EF2 | 51 km | 12.5 mi | 0 |
| Jul 8, 2014 | EF2 | 30 km | 6.7 mi | 0 |
| May 23, 2011 | EF2 | 100 km | 4.7 mi | 0 |
| Jul 23, 2010 | EF2 | 93 km | 25.7 mi | 0 |
| Dec 1, 2006 | EF2 | 34 km | 20.0 mi | 0 |
| May 31, 1998 | EF2 | 98 km | 2.0 mi | 0 |
| Nov 8, 1996 | EF2 | 90 km | 2.0 mi | 0 |
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).
Tsunami History
1 tsunami recorded within 500 km.
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1895 | HIGH BRIDGE, NJ | Earthquake | — | — | 143 km |
Source: NOAA/NCEI Historical Tsunami Database.
Wildfire History
8 wildfires (100+ acres) recorded within 100 km. Largest: PENOBSCOT (2,091 acres, 2009).
| Year | Name | Acres Burned | Distance |
| 2009 | PENOBSCOT | 2,091 | 44 km |
| 2008 | BULL RUN | 2,003 | 94 km |
| 2004 | CRYSTAL LAKE | 1,838 | 47 km |
| 2020 | SEVEN PINES | 790 | 89 km |
| 2015 | RAZOR FIRE | 728 | 82 km |
| 2015 | PIPELINE 1 | 666 | 61 km |
| 2016 | BEAR TOWN | 649 | 97 km |
| 2006 | OKOME ROAD | 573 | 86 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 | 25°F (-4°C) | 2.5 in | Driest |
| March | 34°F (1°C) | 3.0 in | |
| April | 45°F (7°C) | 3.4 in | |
| May | 56°F (13°C) | 4.0 in | |
| June | 64°F (18°C) | 4.5 in | Wettest |
| July | 69°F (21°C) | 3.9 in | Warmest |
| August | 68°F (20°C) | 3.6 in | |
| September | 61°F (16°C) | 3.9 in | |
| October | 50°F (10°C) | 3.2 in | |
| November | 39°F (4°C) | 3.5 in | |
| December | 29°F (-2°C) | 3.0 in |
Jamison City has a seasonal temperature swing of 45°F / from 25°F in January to 69°F in July. Total annual precipitation is 41.0 inches, with June being the wettest month (4.5") and February the driest (2.5").