Weather & Climate in Ulster, PA

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

Ulster experiences four distinct seasons with an average annual temperature of 49°F (10°C). Winters average 26°F in January while summers reach 72°F in July. Annual precipitation totals 38.6 inches. The area receives 37.8 inches of snow annually, a moderate snowfall amount. Air quality is rated Good with a median AQI of 37. 82% of days have good air quality. The city sits at an elevation of 800 feet.

Temperature

26°F Jan (-3°C) 72°F Jul (22°C)
Annual Average49.1°F
9% below US avg
January Average26°F (-3°C)
July Average72°F (22°C)

Geography

Elevation800 ft (244 m)
Area0.8 sq mi (2.0 km²)
Population Density387/sq mi
Coordinates41.8485°N, 76.5070°W
TimezoneAmerica/New_York
CountyBradford County County
Nearest AirportElmira/Corning Regional (ELM)
32 miles away

Precipitation & Snow

Annual Rainfall 38.6"
2% above US avg
Snowfall 37.8"
Wettest Month (Jul) 4.02"
Driest Month (Feb) 1.90"

Air Quality

AQI Median37.0
RatingGood
Good Days %82.1%
Unhealthy Days0

Natural Hazard Risk

Overall RiskRelatively Low
Risk Score73.1 / 100
Social Vulnerability37.8 / 100
Community Resilience67.0 / 100

Hazard Breakdown

Tornado Relatively Low
Hurricane Relatively Low
Earthquake Very Low
Wildfire Very Low
Flood Relatively Moderate
Hail Very Low
Strong Wind Relatively Low
Heat Wave Very Low
Winter Weather Very Low
Lightning Relatively High
Ice Storm Relatively Low
Drought No Rating
Cold Wave Relatively Low
Landslide Relatively Low
Avalanche Very Low
Source: FEMA National Risk Index v1.20 (Dec 2025)

Earthquake History

3 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M3.2.

Feb 3, 2001 6 km W of Bath, New York M3.2 92 km 0 km
Jun 10, 2025 10 km NW of Forksville, Pennsylvania M2.8 35 km 8 km
Jan 25, 1999 New York M2.5 148 km 3 km
Source: USGS Earthquake Catalog (M2.5+, 1990-2025). Sorted by magnitude.

Tornado History

191 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF3. Total: 13 fatalities, 144 injuries.

Date Rating Distance Path Fatalities
Jun 2, 1998 EF3 46 km 26.0 mi 2
May 31, 1998 EF3 38 km 62.0 mi 0
May 31, 1985 EF3 92 km 19.0 mi 6
May 2, 1983 EF3 17 km 2.0 mi 0
May 2, 1983 EF3 25 km 15.0 mi 0
Jul 29, 1976 EF3 96 km 25.0 mi 0
Aug 30, 1955 EF3 64 km 1.0 mi 0
Apr 14, 2019 EF2 74 km 3.7 mi 0
Oct 2, 2018 EF2 65 km 2.2 mi 0
Jun 13, 2018 EF2 21 km 5.2 mi 0
Jun 13, 2018 EF2 87 km 2.9 mi 0
Feb 25, 2017 EF2 91 km 12.5 mi 0
Jul 8, 2014 EF2 33 km 6.7 mi 0
Apr 28, 2011 EF2 99 km 7.4 mi 0
Apr 27, 2011 EF2 40 km 0.9 mi 0
Jul 23, 2010 EF2 96 km 25.7 mi 0
Dec 1, 2006 EF2 93 km 20.0 mi 0
Sep 18, 1991 EF2 81 km 4.0 mi 0
Aug 28, 1990 EF2 78 km 2.5 mi 0
Oct 14, 1989 EF2 95 km 2.0 mi 2
Source: NOAA Storm Prediction Center (EF0+, 1950-2024, US only).

Wildfire History

5 wildfires (100+ acres) recorded within 100 km. Largest: PENOBSCOT (2,091 acres, 2009).

Year Name Acres Burned Distance
2009 PENOBSCOT 2,091 90 km
2008 BULL RUN 2,003 84 km
2004 CRYSTAL LAKE 1,838 95 km
2009 WOODRUFF 757 82 km
2006 OKOME ROAD 573 89 km
Source: NIFC/IRWIN Wildfire Records (100+ acres).

Monthly Weather

Month Avg Temperature Precipitation Summary
January 26°F (-3°C) 2.4 in Coldest
February 28°F (-2°C) 1.9 in Driest
March 35°F (2°C) 3.1 in
April 47°F (8°C) 3.5 in
May 58°F (15°C) 3.4 in
June 67°F (20°C) 3.7 in
July 72°F (22°C) 4.0 in Warmest, Wettest
August 70°F (21°C) 3.9 in
September 63°F (17°C) 3.8 in
October 51°F (11°C) 3.7 in
November 41°F (5°C) 2.6 in
December 32°F (-0°C) 2.7 in

Ulster has a seasonal temperature swing of 45°F / from 26°F in January to 72°F in July. Total annual precipitation is 38.6 inches, with July being the wettest month (4.0") and February the driest (1.9").

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