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Weather & Climate in Sinclairville, NY
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Sinclairville experiences four distinct seasons with an average annual temperature of 47°F (9°C). Winters average 24°F in January while summers reach 69°F in July. The area gets 246 sunny days per year, above the national average. Annual precipitation totals 45.9 inches (wetter than the 38-inch national average). The area receives 98.4 inches of snow annually, making winter weather a significant factor for residents. Air quality is rated Good with a median AQI of 36. The city sits at an elevation of 1,369 feet.
Temperature
24°F Jan (-4°C)
69°F Jul (20°C)
| Annual Average | 47.3°F |
| 12% below US avg | |
| January Average | 24°F (-4°C) |
| July Average | 69°F (20°C) |
| Sunny Days | 246 days/yr |
Geography
| Elevation | 1,369 ft (417 m) |
| Area | 1.6 sq mi (4.2 km²) |
| Population Density | 378/sq mi |
| Coordinates | 42.2653°N, 79.2590°W |
| Timezone | America/New_York |
| County | Chautauqua County County |
| Nearest Airport | Bradford Regional (BFD) 45 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 36.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively Moderate |
| Risk Score | 84.6 / 100 |
| Social Vulnerability | 70.3 / 100 |
| Community Resilience | 89.9 / 100 |
Hazard Breakdown
| Tornado | Relatively Moderate |
| Hurricane | Relatively Low |
| Earthquake | Very Low |
| Wildfire | Very Low |
| Flood | Relatively Moderate |
| Hail | Very Low |
| Strong Wind | Relatively High |
| Heat Wave | Very Low |
| Winter Weather | Relatively Moderate |
| Lightning | Relatively High |
| Ice Storm | Relatively Moderate |
| Drought | No Rating |
| Cold Wave | Relatively Moderate |
| Landslide | Very Low |
| Coastal Flood | Very Low |
| Avalanche | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Earthquake History
19 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 | 127 km | 5 km |
| Jan 26, 2001 | 8 km NNW of Edgewood, Ohio | M3.9 | 132 km | 5 km |
| Feb 6, 2023 | 1 km NE of West Seneca, New York | M3.8 | 77 km | 6 km |
| Jun 3, 2001 | 3 km N of Edgewood, Ohio | M3.4 | 131 km | 5 km |
| May 25, 1995 | 3 km NW of Amherst, New York | M3.0 | 88 km | 5 km |
| Jun 16, 2004 | 11 km NNW of Angola on the Lake, New York | M2.9 | 57 km | 6 km |
| Jun 5, 2009 | 4 km SSE of Attica, New York | M2.9 | 104 km | 5 km |
| Feb 23, 1995 | 3 km W of Ashtabula, Ohio | M2.9 | 137 km | 5 km |
| Mar 28, 2005 | 16 km NW of Virgil, Canada | M2.8 | 117 km | 7 km |
| Mar 8, 2008 | 5 km ENE of Clarence Center, New York | M2.7 | 102 km | 6 km |
| Dec 21, 2009 | 10 km NNE of Olcott, New York | M2.7 | 138 km | 8 km |
| Jan 20, 2001 | 0 km NNW of Edgewood, Ohio | M2.6 | 132 km | 5 km |
| Mar 29, 2020 | 11 km N of Lyndonville, New York | M2.6 | 148 km | 5 km |
| Mar 15, 2022 | 5 km SSW of Warsaw, New York | M2.6 | 103 km | 5 km |
| Sep 20, 2009 | 20 km ESE of Oakville, Canada | M2.6 | 126 km | 4 km |
| Jul 11, 2017 | 11 km NNW of Barker, New York | M2.5 | 141 km | 5 km |
| Dec 17, 1990 | 5 km SSE of Middleboro, Pennsylvania | M2.5 | 79 km | 5 km |
| Jul 17, 2003 | 1 km SE of Edgewood, Ohio | M2.5 | 132 km | 3 km |
| Jan 25, 1999 | New York | M2.5 | 127 km | 3 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tornado History
148 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF4. Total: 15 fatalities, 144 injuries.
| Date | Rating | Distance | Path | Fatalities |
| May 31, 1985 | EF4 | 68 km | 28.0 mi | 0 |
| May 31, 1985 | EF4 | 73 km | 29.0 mi | 4 |
| May 31, 1985 | EF4 | 85 km | 29.0 mi | 7 |
| May 31, 1985 | EF3 | 26 km | 13.0 mi | 0 |
| May 31, 1985 | EF3 | 75 km | 8.0 mi | 0 |
| May 31, 1985 | EF3 | 68 km | 17.0 mi | 0 |
| May 31, 1985 | EF3 | 97 km | 23.0 mi | 2 |
| May 2, 1983 | EF3 | 32 km | 28.0 mi | 2 |
| Jun 2, 1971 | EF3 | 84 km | 29.3 mi | 0 |
| Aug 19, 1970 | EF3 | 55 km | 2.3 mi | 0 |
| Jun 20, 1969 | EF3 | 41 km | 84.1 mi | 0 |
| Jul 24, 1967 | EF3 | 51 km | 11.4 mi | 0 |
| May 15, 1961 | EF3 | 57 km | 3.0 mi | 0 |
| Jul 10, 2024 | EF2 | 51 km | 3.2 mi | 0 |
| Jul 28, 2022 | EF2 | 86 km | 10.0 mi | 0 |
| Apr 14, 2019 | EF2 | 53 km | 18.0 mi | 0 |
| Jul 20, 2017 | EF2 | 62 km | 6.1 mi | 0 |
| Nov 14, 2011 | EF2 | 28 km | 2.9 mi | 0 |
| Nov 14, 2011 | EF2 | 24 km | 4.1 mi | 0 |
| Jul 24, 2010 | EF2 | 23 km | 7.6 mi | 0 |
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).
Tsunami History
1 tsunami recorded within 500 km. Highest wave on record: 2.7 m (9 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1823 | LAKE ERIE | Unknown | 2.7 m | — | 143 km |
Source: NOAA/NCEI Historical Tsunami Database.
Wildfire History
2 wildfires (100+ acres) recorded within 100 km. Largest: UNNAMED (628 acres, 1990).
| Year | Name | Acres Burned | Distance |
| 1990 | UNNAMED | 628 | 84 km |
| 2021 | UNNAMED | 586 | 73 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 24°F (-4°C) | 2.9 in | |
| February | 23°F (-5°C) | 2.5 in | Coldest, Driest |
| March | 32°F (0°C) | 3.1 in | |
| April | 43°F (6°C) | 3.5 in | |
| May | 55°F (13°C) | 3.7 in | |
| June | 63°F (17°C) | 4.5 in | |
| July | 69°F (20°C) | 4.1 in | Warmest |
| August | 66°F (19°C) | 4.3 in | |
| September | 59°F (15°C) | 4.7 in | Wettest |
| October | 48°F (9°C) | 4.1 in | |
| November | 38°F (3°C) | 4.5 in | |
| December | 27°F (-3°C) | 3.8 in |
Sinclairville has a seasonal temperature swing of 46°F / from 23°F in February to 69°F in July. Total annual precipitation is 45.5 inches, with September being the wettest month (4.7") and February the driest (2.5").