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Weather & Climate in Farnham, NY
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Farnham experiences four distinct seasons with an average annual temperature of 47°F (8°C). Winters average 23°F in January while summers reach 69°F in July. The area gets 259 sunny days per year, above the national average. Annual precipitation totals 53.7 inches (wetter than the 38-inch national average). The area receives 208.3 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 608 feet.
Temperature
23°F Jan (-5°C)
69°F Jul (21°C)
| Annual Average | 46.9°F |
| 13% below US avg | |
| January Average | 23°F (-5°C) |
| July Average | 69°F (21°C) |
| Sunny Days | 259 days/yr |
Geography
| Elevation | 608 ft (185 m) |
| Area | 1.2 sq mi (3.1 km²) |
| Population Density | 329/sq mi |
| Coordinates | 42.5951°N, 79.0809°W |
| Timezone | America/New_York |
| County | Chautauqua County County |
| Nearest Airport | Buffalo Niagara International (BUF) 30 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
20 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M3.8.
| Nov 26, 1999 | 14 km ESE of Centennial Scarborough, Canada | M3.8 | 124 km | 13 km |
| Feb 6, 2023 | 1 km NE of West Seneca, New York | M3.8 | 38 km | 6 km |
| Feb 3, 2001 | 6 km W of Bath, New York | M3.2 | 141 km | 0 km |
| May 24, 2000 | 4 km ENE of Centennial Scarborough, Canada | M3.1 | 135 km | 18 km |
| May 8, 2018 | 14 km SSE of Ajax, Canada | M3.0 | 127 km | 5 km |
| May 25, 1995 | 3 km NW of Amherst, New York | M3.0 | 49 km | 5 km |
| Aug 4, 2004 | 30 km SSW of Cobourg, Canada | M3.0 | 140 km | 5 km |
| Jul 19, 2007 | 27 km S of Cobourg, Canada | M3.0 | 144 km | 5 km |
| Jun 16, 2004 | 11 km NNW of Angola on the Lake, New York | M2.9 | 18 km | 6 km |
| Jun 5, 2009 | 4 km SSE of Attica, New York | M2.9 | 73 km | 5 km |
| Mar 28, 2005 | 16 km NW of Virgil, Canada | M2.8 | 82 km | 7 km |
| Mar 8, 2008 | 5 km ENE of Clarence Center, New York | M2.7 | 64 km | 6 km |
| Dec 21, 2009 | 10 km NNE of Olcott, New York | M2.7 | 98 km | 8 km |
| Mar 15, 2022 | 5 km SSW of Warsaw, New York | M2.6 | 77 km | 5 km |
| Mar 29, 2020 | 11 km N of Lyndonville, New York | M2.6 | 109 km | 5 km |
| Sep 20, 2009 | 20 km ESE of Oakville, Canada | M2.6 | 93 km | 4 km |
| Jul 11, 2017 | 11 km NNW of Barker, New York | M2.5 | 101 km | 5 km |
| Jan 25, 1999 | New York | M2.5 | 102 km | 3 km |
| Dec 17, 1990 | 5 km SSE of Middleboro, Pennsylvania | M2.5 | 112 km | 5 km |
| Feb 13, 2014 | 34 km N of Lyndonville, New York | M2.5 | 129 km | 5 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tornado History
113 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF3. Total: 4 fatalities, 43 injuries.
| Date | Rating | Distance | Path | Fatalities |
| May 31, 1985 | EF3 | 64 km | 13.0 mi | 0 |
| May 2, 1983 | EF3 | 66 km | 28.0 mi | 2 |
| Aug 19, 1970 | EF3 | 18 km | 2.3 mi | 0 |
| Jun 20, 1969 | EF3 | 78 km | 84.1 mi | 0 |
| Jul 24, 1967 | EF3 | 39 km | 11.4 mi | 0 |
| May 15, 1961 | EF3 | 68 km | 3.0 mi | 0 |
| Jul 10, 2024 | EF2 | 17 km | 3.2 mi | 0 |
| Jul 28, 2022 | EF2 | 62 km | 10.0 mi | 0 |
| Apr 14, 2019 | EF2 | 91 km | 18.0 mi | 0 |
| Jul 20, 2017 | EF2 | 25 km | 6.1 mi | 0 |
| Nov 14, 2011 | EF2 | 32 km | 4.1 mi | 0 |
| Nov 14, 2011 | EF2 | 53 km | 2.9 mi | 0 |
| Jul 24, 2010 | EF2 | 53 km | 7.6 mi | 0 |
| Jul 24, 2010 | EF2 | 49 km | 7.6 mi | 0 |
| Apr 28, 2002 | EF2 | 84 km | 6.5 mi | 0 |
| Jun 2, 1998 | EF2 | 70 km | 15.0 mi | 0 |
| Aug 16, 1997 | EF2 | 100 km | 2.0 mi | 0 |
| Jun 13, 1994 | EF2 | 42 km | 3.0 mi | 0 |
| Sep 3, 1993 | EF2 | 93 km | 3.5 mi | 0 |
| Jul 12, 1992 | EF2 | 28 km | 4.0 mi | 0 |
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).
Wildfire History
1 wildfire (100+ acres) recorded within 100 km. Largest: MOHAWK POOL (507 acres, 1994).
| Year | Name | Acres Burned | Distance |
| 1994 | MOHAWK POOL | 507 | 80 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 23°F (-5°C) | 2.5 in | Coldest |
| February | 25°F (-4°C) | 2.1 in | Driest |
| March | 33°F (1°C) | 2.6 in | |
| April | 44°F (7°C) | 2.9 in | |
| May | 56°F (13°C) | 3.2 in | |
| June | 65°F (18°C) | 3.6 in | |
| July | 69°F (21°C) | 3.4 in | Warmest |
| August | 68°F (20°C) | 3.6 in | |
| September | 61°F (16°C) | 4.2 in | Wettest |
| October | 51°F (10°C) | 3.4 in | |
| November | 40°F (5°C) | 3.9 in | |
| December | 30°F (-1°C) | 3.4 in |
Farnham has a seasonal temperature swing of 46°F / from 23°F in January to 69°F in July. Total annual precipitation is 38.6 inches, with September being the wettest month (4.2") and February the driest (2.1").