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Weather & Climate in Richville, NY
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Richville has a cool climate with an average annual temperature of 44°F (6°C). Winters average 16°F in January while summers reach 68°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 39.6 inches. The area receives 92.4 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 393 feet.
Temperature
16°F Jan (-9°C)
68°F Jul (20°C)
| Annual Average | 43.5°F |
| 19% below US avg | |
| January Average | 16°F (-9°C) |
| July Average | 68°F (20°C) |
| Sunny Days | 270 days/yr |
Geography
| Elevation | 393 ft (120 m) |
| Area | 0.7 sq mi (1.9 km²) |
| Population Density | 376/sq mi |
| Coordinates | 44.4151°N, 75.3925°W |
| Timezone | America/New_York |
| County | St. Lawrence County County |
| Nearest Airport | Ogdensburg International (OGS) 19 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 36.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 77.9 / 100 |
| Social Vulnerability | 64.7 / 100 |
| Community Resilience | 70.4 / 100 |
Hazard Breakdown
| Tornado | Very Low |
| Hurricane | Relatively Low |
| Earthquake | Relatively Low |
| Wildfire | Very Low |
| Flood | Relatively Moderate |
| Hail | Very Low |
| Strong Wind | Relatively Low |
| Heat Wave | Very Low |
| Winter Weather | Relatively High |
| Lightning | Relatively Moderate |
| Ice Storm | Relatively High |
| Drought | No Rating |
| Cold Wave | Relatively Moderate |
| Landslide | Relatively Low |
| Avalanche | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Earthquake History
73 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M5.3.
| Apr 20, 2002 | 8 km NNW of Au Sable Forks, New York | M5.3 | 135 km | 5 km |
| May 17, 1991 | 7 km WNW of Rigaud, Canada | M4.4 | 144 km | 18 km |
| Apr 18, 1998 | 4 km N of Plantagenet, Canada | M4.1 | 132 km | 18 km |
| Feb 25, 2006 | 4 km NE of Thurso, Canada | M4.0 | 136 km | 11 km |
| Jul 30, 1993 | 1 km NE of Salaberry-de-Valleyfield, Canada | M3.9 | 138 km | 8 km |
| Mar 16, 2011 | 6 km ENE of Hawkesbury, Canada | M3.9 | 150 km | 10 km |
| Sep 18, 2011 | 1 km E of Thurso, Canada | M3.8 | 133 km | 5 km |
| Apr 20, 2000 | 7 km WSW of Newcomb, New York | M3.8 | 104 km | 5 km |
| Jul 5, 1991 | 7 km WSW of Sainte-Martine, Canada | M3.8 | 149 km | 18 km |
| Oct 6, 2000 | 1 km WSW of Ormstown, Canada | M3.8 | 134 km | 18 km |
| Nov 6, 2012 | Ontario-Quebec border region, Canada | M3.7 | 148 km | 11 km |
| Jan 9, 2006 | 2 km ESE of Franklin, Canada | M3.7 | 137 km | 13 km |
| Apr 20, 2002 | 5 km NNW of Au Sable Forks, New York | M3.7 | 135 km | 5 km |
| Apr 8, 2003 | 17 km ESE of Saint Regis Falls, New York | M3.7 | 86 km | 10 km |
| Apr 23, 2023 | New York | M3.6 | 79 km | 9 km |
| Jan 13, 2020 | 5 km SW of Franklin, Canada | M3.4 | 130 km | 6 km |
| Jun 9, 1998 | 3 km N of Dannemora, New York | M3.3 | 138 km | 5 km |
| Jun 29, 2024 | 14 km W of Ellisburg, New York | M3.3 | 107 km | 5 km |
| Jun 11, 2008 | 6 km NNE of Buckingham, Canada | M3.3 | 136 km | 18 km |
| Jul 15, 2015 | 15 km SSE of Hawkesbury, Canada | M3.3 | 135 km | 10 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tornado History
26 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF2. Total: 1 fatality, 5 injuries.
| Date | Rating | Distance | Path | Fatalities |
| Aug 15, 1986 | EF2 | 21 km | 0.2 mi | 1 |
| Sep 19, 1954 | EF2 | 60 km | 0.1 mi | 0 |
| Jul 16, 2024 | EF1 | 92 km | 4.1 mi | 0 |
| Jul 10, 2024 | EF1 | 99 km | 2.2 mi | 0 |
| Jul 8, 2014 | EF1 | 72 km | 12.3 mi | 0 |
| Aug 1, 2005 | EF1 | 80 km | 1.5 mi | 0 |
| Sep 3, 1993 | EF1 | 73 km | 6.0 mi | 0 |
| Jul 10, 1989 | EF1 | 33 km | 1.7 mi | 0 |
| Jul 26, 1986 | EF1 | 92 km | 1.0 mi | 0 |
| May 31, 1985 | EF1 | 52 km | 5.0 mi | 0 |
| Aug 28, 1983 | EF1 | 100 km | 6.0 mi | 0 |
| Aug 7, 1972 | EF1 | 14 km | 4.9 mi | 0 |
| Jul 12, 1969 | EF1 | 88 km | 0.8 mi | 0 |
| Jul 1, 1959 | EF1 | 81 km | 0.1 mi | 0 |
| Aug 11, 2024 | EF0 | 18 km | 0.1 mi | 0 |
| Aug 16, 2016 | EF0 | 95 km | 0.2 mi | 0 |
| Oct 2, 2004 | EF0 | 93 km | 0.1 mi | 0 |
| Jun 9, 2004 | EF0 | 11 km | 0.2 mi | 0 |
| Jun 9, 2004 | EF0 | 29 km | 2.0 mi | 0 |
| Aug 5, 2003 | EF0 | 49 km | 0.1 mi | 0 |
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 16°F (-9°C) | 2.3 in | Coldest |
| February | 18°F (-8°C) | 2.0 in | Driest |
| March | 29°F (-2°C) | 2.4 in | |
| April | 43°F (6°C) | 3.0 in | |
| May | 55°F (13°C) | 3.1 in | |
| June | 64°F (18°C) | 3.2 in | |
| July | 68°F (20°C) | 3.2 in | Warmest |
| August | 67°F (19°C) | 3.9 in | |
| September | 58°F (15°C) | 4.1 in | Wettest |
| October | 47°F (8°C) | 3.2 in | |
| November | 36°F (2°C) | 3.7 in | |
| December | 23°F (-5°C) | 3.0 in |
Richville has a seasonal temperature swing of 53°F / from 16°F in January to 68°F in July. Total annual precipitation is 37.0 inches, with September being the wettest month (4.1") and February the driest (2.0").