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Weather & Climate in Sweden Valley, PA
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Sweden Valley has a cool climate with an average annual temperature of 45°F (7°C). Winters average 22°F in January while summers reach 66°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 46.7 inches (wetter than the 38-inch national average). The area receives 78.0 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 1,953 feet.
Temperature
22°F Jan (-6°C)
66°F Jul (19°C)
| Annual Average | 44.9°F |
| 17% below US avg | |
| January Average | 22°F (-6°C) |
| July Average | 66°F (19°C) |
| Sunny Days | 275 days/yr |
Geography
| Elevation | 1,953 ft (595 m) |
| Area | 1.0 sq mi (2.7 km²) |
| Population Density | 184/sq mi |
| Coordinates | 41.7595°N, 77.9538°W |
| Timezone | America/New_York |
| County | Potter County County |
| Nearest Airport | Bradford Regional (BFD) 35 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 40.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Very Low |
| Risk Score | 28.2 / 100 |
| Social Vulnerability | 66.0 / 100 |
| Community Resilience | 69.2 / 100 |
Hazard Breakdown
| Tornado | Very Low |
| Hurricane | Very Low |
| Earthquake | Very Low |
| Wildfire | Very Low |
| Flood | Relatively Low |
| Hail | Very Low |
| Strong Wind | Relatively Moderate |
| Heat Wave | Very Low |
| Winter Weather | Relatively Low |
| Lightning | Relatively 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
7 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M3.8.
| Feb 6, 2023 | 1 km NE of West Seneca, New York | M3.8 | 140 km | 6 km |
| Feb 3, 2001 | 6 km W of Bath, New York | M3.2 | 80 km | 0 km |
| Jun 16, 2004 | 11 km NNW of Angola on the Lake, New York | M2.9 | 145 km | 6 km |
| Jun 5, 2009 | 4 km SSE of Attica, New York | M2.9 | 121 km | 5 km |
| Jun 10, 2025 | 10 km NW of Forksville, Pennsylvania | M2.8 | 109 km | 8 km |
| Mar 15, 2022 | 5 km SSW of Warsaw, New York | M2.6 | 105 km | 5 km |
| Jan 25, 1999 | New York | M2.5 | 108 km | 3 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tornado History
109 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF4. Total: 11 fatalities, 130 injuries.
| Date | Rating | Distance | Path | Fatalities |
| May 31, 1985 | EF4 | 91 km | 29.0 mi | 4 |
| May 31, 1985 | EF4 | 88 km | 69.0 mi | 0 |
| Jul 21, 2003 | EF3 | 18 km | 2.5 mi | 0 |
| May 31, 1985 | EF3 | 93 km | 19.0 mi | 6 |
| Jul 29, 1976 | EF3 | 84 km | 25.0 mi | 0 |
| Jul 24, 1967 | EF3 | 94 km | 11.4 mi | 0 |
| Sep 3, 1963 | EF3 | 75 km | 8.4 mi | 0 |
| May 15, 1961 | EF3 | 66 km | 3.0 mi | 0 |
| Oct 2, 2018 | EF2 | 69 km | 2.2 mi | 0 |
| Jul 24, 2010 | EF2 | 99 km | 7.6 mi | 0 |
| Apr 28, 2002 | EF2 | 65 km | 6.5 mi | 0 |
| Sep 3, 1993 | EF2 | 60 km | 3.5 mi | 0 |
| May 31, 1985 | EF2 | 85 km | 19.0 mi | 0 |
| May 2, 1983 | EF2 | 46 km | 9.8 mi | 0 |
| Aug 16, 1966 | EF2 | 94 km | 4.5 mi | 0 |
| Jun 14, 1962 | EF2 | 6 km | 0.2 mi | 0 |
| Jun 12, 1954 | EF2 | 21 km | 0.2 mi | 0 |
| Sep 6, 2024 | EF1 | 46 km | 6.0 mi | 0 |
| Jul 2, 2023 | EF1 | 98 km | 0.6 mi | 0 |
| Sep 19, 2022 | EF1 | 95 km | 1.9 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 | 48 km |
| 2009 | WOODRUFF | 757 | 38 km |
| 2018 | FIELDS RUN | 711 | 66 km |
| 2006 | FIVE MILE FIRE | 658 | 48 km |
| 2006 | OKOME ROAD | 573 | 62 km |
| 2006 | BEAR TRAP | 561 | 57 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 22°F (-6°C) | 2.4 in | Coldest, Driest |
| February | 22°F (-5°C) | 2.4 in | |
| March | 31°F (-0°C) | 2.9 in | |
| April | 42°F (6°C) | 3.0 in | |
| May | 53°F (12°C) | 3.7 in | |
| June | 62°F (16°C) | 4.9 in | Wettest |
| July | 66°F (19°C) | 4.1 in | Warmest |
| August | 65°F (18°C) | 3.6 in | |
| September | 58°F (14°C) | 3.7 in | |
| October | 47°F (8°C) | 3.1 in | |
| November | 37°F (3°C) | 3.4 in | |
| December | 26°F (-4°C) | 2.9 in |
Sweden Valley has a seasonal temperature swing of 44°F / from 22°F in January to 66°F in July. Total annual precipitation is 40.0 inches, with June being the wettest month (4.9") and January the driest (2.4").