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Weather & Climate in Winthrop, NY
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Winthrop has a cool climate with an average annual temperature of 45°F (7°C). Winters average 17°F in January while summers reach 69°F in July. The area gets 270 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 39.4 inches. The area receives 75.2 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 290 feet.
Temperature
17°F Jan (-8°C)
69°F Jul (21°C)
| Annual Average | 45.1°F |
| 16% below US avg | |
| January Average | 17°F (-8°C) |
| July Average | 69°F (21°C) |
| Sunny Days | 270 days/yr |
Geography
| Elevation | 290 ft (88 m) |
| Area | 2.8 sq mi (7.3 km²) |
| Population Density | 119/sq mi |
| Coordinates | 44.8036°N, 74.8100°W |
| Timezone | America/New_York |
| County | Franklin County County |
| Nearest Airport | Massena International-Richards Field (MSS) 9 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 36.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 48.9 / 100 |
| Social Vulnerability | 51.6 / 100 |
| Community Resilience | 62.5 / 100 |
Hazard Breakdown
| Tornado | Very Low |
| Hurricane | Very Low |
| Earthquake | Relatively Low |
| Wildfire | Very Low |
| Flood | Relatively Low |
| Hail | Very Low |
| Strong Wind | Relatively Low |
| Heat Wave | Very Low |
| Winter Weather | Relatively Low |
| Lightning | Relatively Moderate |
| Ice Storm | Relatively Moderate |
| Drought | No Rating |
| Cold Wave | Relatively Low |
| Landslide | Relatively Low |
| Avalanche | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Earthquake History
139 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M5.4.
| Jun 23, 2010 | 29 km NNE of Val-des-Monts, Canada | M5.4 | 131 km | 19 km |
| Apr 20, 2002 | 8 km NNW of Au Sable Forks, New York | M5.3 | 94 km | 5 km |
| Mar 14, 1996 | 7 km WNW of Saint-Adolphe-d'Howard, Canada | M4.5 | 135 km | 18 km |
| May 17, 1991 | 7 km WNW of Rigaud, Canada | M4.4 | 84 km | 18 km |
| Oct 31, 1999 | 7 km SW of Morin-Heights, Canada | M4.2 | 123 km | 18 km |
| May 24, 1997 | 6 km W of Saint-Adolphe-d'Howard, Canada | M4.2 | 134 km | 10 km |
| Apr 18, 1998 | 4 km N of Plantagenet, Canada | M4.1 | 86 km | 18 km |
| Nov 17, 1992 | 16 km ENE of Saint-André-Avellin, Canada | M4.0 | 107 km | 18 km |
| Feb 25, 2006 | 4 km NE of Thurso, Canada | M4.0 | 97 km | 11 km |
| Jul 30, 1993 | 1 km NE of Salaberry-de-Valleyfield, Canada | M3.9 | 74 km | 8 km |
| Mar 16, 2011 | 6 km ENE of Hawkesbury, Canada | M3.9 | 93 km | 10 km |
| Sep 18, 2011 | 1 km E of Thurso, Canada | M3.8 | 95 km | 5 km |
| Sep 23, 1993 | 11 km SE of La Conception, Canada | M3.8 | 141 km | 18 km |
| Apr 20, 2000 | 7 km WSW of Newcomb, New York | M3.8 | 105 km | 5 km |
| Nov 16, 1993 | 5 km SSE of Saint-Édouard, Canada | M3.8 | 112 km | 17 km |
| Jul 5, 1991 | 7 km WSW of Sainte-Martine, Canada | M3.8 | 86 km | 18 km |
| Oct 6, 2000 | 1 km WSW of Ormstown, Canada | M3.8 | 72 km | 18 km |
| Nov 6, 2012 | Ontario-Quebec border region, Canada | M3.7 | 92 km | 11 km |
| Jan 9, 2006 | 2 km ESE of Franklin, Canada | M3.7 | 77 km | 13 km |
| Sep 12, 1995 | 8 km S of Brownsburg-Chatham, Canada | M3.7 | 95 km | 18 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tornado History
18 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF2. Total: 1 fatality, 4 injuries.
| Date | Rating | Distance | Path | Fatalities |
| Aug 15, 1986 | EF2 | 84 km | 0.2 mi | 1 |
| Sep 19, 1954 | EF2 | 17 km | 0.1 mi | 0 |
| May 6, 1952 | EF2 | 83 km | 4.9 mi | 0 |
| Sep 3, 1993 | EF1 | 97 km | 6.0 mi | 0 |
| Jul 10, 1989 | EF1 | 56 km | 1.7 mi | 0 |
| Jul 26, 1986 | EF1 | 51 km | 1.0 mi | 0 |
| May 31, 1985 | EF1 | 17 km | 5.0 mi | 0 |
| Aug 7, 1972 | EF1 | 50 km | 4.9 mi | 0 |
| Oct 16, 1958 | EF1 | 99 km | 0.3 mi | 0 |
| Aug 11, 2024 | EF0 | 81 km | 0.1 mi | 0 |
| Jul 8, 2004 | EF0 | 99 km | 0.1 mi | 0 |
| Jun 9, 2004 | EF0 | 84 km | 2.0 mi | 0 |
| Jun 9, 2004 | EF0 | 73 km | 0.2 mi | 0 |
| Jun 1, 2004 | EF0 | 44 km | 0.1 mi | 0 |
| Jun 21, 1993 | EF0 | 20 km | 0.4 mi | 0 |
| Nov 16, 1989 | EF0 | 96 km | 1.7 mi | 0 |
| Aug 9, 1988 | EF0 | 19 km | 0.5 mi | 0 |
| Jul 24, 1987 | EF0 | 57 km | 0.4 mi | 0 |
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).
Tsunami History
1 tsunami recorded within 500 km. Highest wave on record: 15.0 m (49 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1908 | NOTRE DAME DE LA SALETTE | Meteorological | 15.0 m | 33 | 124 km |
Source: NOAA/NCEI Historical Tsunami Database.
Wildfire History
1 wildfire (100+ acres) recorded within 100 km. Largest: FLAT ROCK FIRE (658 acres, 2018).
| Year | Name | Acres Burned | Distance |
| 2018 | FLAT ROCK FIRE | 658 | 93 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 17°F (-8°C) | 2.4 in | |
| February | 17°F (-8°C) | 2.1 in | Coldest, Driest |
| March | 28°F (-2°C) | 2.3 in | |
| April | 42°F (6°C) | 3.0 in | |
| May | 55°F (13°C) | 3.0 in | |
| June | 64°F (18°C) | 3.7 in | |
| July | 69°F (21°C) | 3.8 in | Warmest |
| August | 67°F (19°C) | 4.0 in | Wettest |
| September | 58°F (14°C) | 4.0 in | |
| October | 47°F (8°C) | 3.3 in | |
| November | 36°F (2°C) | 3.4 in | |
| December | 22°F (-6°C) | 2.8 in |
Winthrop has a seasonal temperature swing of 52°F / from 17°F in February to 69°F in July. Total annual precipitation is 37.6 inches, with August being the wettest month (4.0") and February the driest (2.1").