Weather & Climate in Swan Lake, NY

Temperature, precipitation, air quality, natural hazards, and monthly weather data.

Swan Lake has a cool climate with an average annual temperature of 45°F (7°C). Winters average 22°F in January while summers reach 68°F in July. The area gets 271 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 53.1 inches (wetter than the 38-inch national average). The area receives 69.9 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 1,358 feet.

Temperature

22°F Jan (-6°C) 68°F Jul (20°C)

Annual Average	45.3°F
	16% below US avg
January Average	22°F (-6°C)
July Average	68°F (20°C)
Sunny Days	271 days/yr

Geography

Elevation	1,358 ft (414 m)
Area	1.9 sq mi (5.0 km²)
Population Density	123/sq mi
Coordinates	41.7608°N, 74.7834°W
Timezone	America/New_York
County	Sullivan County County
Nearest Airport	Sullivan County International (MSV) 4 miles away

Precipitation & Snow

Annual Rainfall 53.1"

40% above US avg

Snowfall 69.9"

Wettest Month (May) 4.57"

Driest Month (Feb) 3.07"

Air Quality

AQI Median	36.0
Rating	Good

Natural Hazard Risk

Overall Risk	Relatively Low
Risk Score	78.3 / 100
Social Vulnerability	48.0 / 100
Community Resilience	56.2 / 100

Hazard Breakdown

Tornado	Relatively Moderate
Hurricane	Relatively Low
Earthquake	Relatively Low
Wildfire	Very Low
Flood	Relatively Moderate
Hail	Relatively Low
Strong Wind	Relatively Moderate
Heat Wave	Relatively Low
Winter Weather	Relatively Moderate
Lightning	Relatively Moderate
Ice Storm	Relatively Low
Drought	Very Low
Cold Wave	Relatively Moderate
Landslide	Relatively Low
Avalanche	Very Low

Source: FEMA National Risk Index v1.20 (Dec 2025)

Earthquake History

30 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.8.

Apr 5, 2024	2024 Tewksbury, New Jersey Earthquake	M4.8	118 km	3 km
Jun 17, 1991	7 km NE of Worcester, New York	M4.0	97 km	5 km
Apr 5, 2024	7 km WSW of Gladstone, New Jersey	M3.7	119 km	4 km
Dec 13, 2009	15 km N of Medusa, New York	M3.2	106 km	10 km
Aug 26, 2003	4 km NNW of Milford, New Jersey	M3.1	131 km	3 km
May 18, 2009	15 km N of Medusa, New York	M3.1	106 km	9 km
Jul 24, 2007	12 km SSW of Altamont, New York	M3.1	109 km	15 km
Aug 3, 2025	0 km W of Little Ferry, New Jersey	M3.0	118 km	10 km
Oct 28, 1991	3 km WNW of Stamford, Connecticut	M3.0	127 km	10 km
Feb 3, 2009	1 km ESE of Victory Gardens, New Jersey	M3.0	101 km	0 km
Oct 21, 2009	15 km N of Medusa, New York	M2.9	106 km	7 km
Apr 27, 2024	7 km WSW of Gladstone, New Jersey	M2.9	119 km	5 km
May 24, 2024	6 km E of Califon, New Jersey	M2.9	117 km	7 km
Aug 5, 2025	1 km N of Hillsdale, New Jersey	M2.8	104 km	12 km
Aug 27, 2011	5 km WSW of Altamont, New York	M2.8	117 km	22 km
Mar 22, 2009	9 km SW of Altamont, New York	M2.8	112 km	16 km
Apr 12, 1991	2 km ENE of North Castle, New York	M2.7	116 km	9 km
Aug 25, 2011	5 km WSW of Altamont, New York	M2.7	117 km	18 km
Feb 18, 2009	15 km N of Medusa, New York	M2.7	106 km	9 km
Feb 20, 2009	15 km SSW of Altamont, New York	M2.7	107 km	8 km

Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.

Hurricane History

2 hurricanes (Category 1+) recorded within 500 km since 1980. Strongest on record: Category 2.

Year	Name	Category	Max Wind	Closest
1991	Bob	Category 2	104 mph	271 km
1985	Gloria	Category 1	86 mph	165 km

Source: NOAA IBTrACS (Category 1+, 1980–2026).

Tornado History

156 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF3. Total: 10 fatalities, 63 injuries.

Date	Rating	Distance	Path	Fatalities
May 31, 1998	EF3	58 km	20.0 mi	0
May 31, 1998	EF3	89 km	5.0 mi	0
Jul 14, 1988	EF3	52 km	7.2 mi	0
Mar 21, 1976	EF3	93 km	0.5 mi	0
Jun 16, 1974	EF3	96 km	49.1 mi	0
Apr 22, 2023	EF2	13 km	10.0 mi	0
May 15, 2018	EF2	96 km	1.2 mi	0
Feb 25, 2017	EF2	99 km	12.5 mi	0
Jul 23, 2010	EF2	50 km	25.7 mi	0
Jul 29, 2009	EF2	59 km	7.4 mi	0
Jul 21, 2003	EF2	83 km	1.5 mi	0
May 18, 2000	EF2	68 km	0.2 mi	0
May 31, 1998	EF2	59 km	2.0 mi	0
May 31, 1998	EF2	54 km	3.0 mi	0
May 29, 1995	EF2	96 km	15.0 mi	0
Sep 18, 1991	EF2	62 km	4.0 mi	0
Jul 10, 1989	EF2	99 km	0.5 mi	0
Oct 1, 1986	EF2	60 km	0.1 mi	0
Jul 26, 1986	EF2	32 km	0.5 mi	0
Oct 26, 1981	EF2	99 km	0.8 mi	0

Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).

Tsunami History

1 tsunami recorded within 500 km.

Year	Location	Cause	Max Wave	Deaths	Distance
1895	HIGH BRIDGE, NJ	Earthquake	—	—	122 km

Source: NOAA/NCEI Historical Tsunami Database.

Wildfire History

13 wildfires (100+ acres) recorded within 100 km. Largest: UNNAMED (23,000 acres, 1985).

Year	Name	Acres Burned	Distance
1985	UNNAMED	23,000	84 km
2016	16 MILE	7,896	70 km
2024	JENNINGS CREEK	5,069	77 km
2015	ROOSA GAP	2,747	33 km
2008	UNNAMED	2,224	42 km
2016	SAMS POINT FIRE-VERKEERDER FIRE	1,929	38 km
2006	CHERRYTOWN FIRE	943	36 km
1988	UNNAMED	833	79 km
2020	SEVEN PINES	790	81 km
2016	BEAR TOWN	649	74 km
2016	SHERWOOD	642	86 km
2024	WHITEHOUSE	607	32 km
1999	WORTHINGTO	514	90 km

Source: NIFC/IRWIN Wildfire Records (100+ acres).

Monthly Weather

Month	Avg Temperature	Precipitation	Summary
January	22°F (-6°C)	3.2 in	Coldest
February	23°F (-5°C)	3.1 in	Driest
March	32°F (0°C)	3.5 in
April	44°F (6°C)	4.1 in
May	55°F (13°C)	4.6 in	Wettest
June	63°F (17°C)	4.4 in
July	68°F (20°C)	4.2 in	Warmest
August	67°F (19°C)	4.3 in
September	59°F (15°C)	3.9 in
October	48°F (9°C)	3.7 in
November	38°F (3°C)	4.1 in
December	27°F (-3°C)	3.8 in

Swan Lake has a seasonal temperature swing of 46°F / from 22°F in January to 68°F in July. Total annual precipitation is 46.8 inches, with May being the wettest month (4.6") and February the driest (3.1").

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