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Weather & Climate in Hereford, PA

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

Hereford experiences four distinct seasons with an average annual temperature of 52°F (11°C). Winters average 30°F in January while summers reach 74°F in July. The area gets 275 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 45.3 inches. Air quality is rated Good with a median AQI of 40. The city sits at an elevation of 537 feet.

Temperature

30°F Jan (-1°C) 74°F Jul (23°C)
Annual Average51.9°F
4% below US avg
January Average30°F (-1°C)
July Average74°F (23°C)
Sunny Days275 days/yr

Geography

Elevation537 ft (164 m)
Area1.0 sq mi (2.6 km²)
Population Density1,509/sq mi
Coordinates40.4509°N, 75.5504°W
TimezoneAmerica/New_York
CountyLehigh County County
Nearest AirportLehigh Valley International (ABE)
15 miles away

Precipitation & Snow

Annual Rainfall 45.3"
19% above US avg
Wettest Month (May) 4.61"
Driest Month (Feb) 2.87"

Air Quality

AQI Median40.0
RatingGood

Natural Hazard Risk

Overall RiskRelatively Moderate
Risk Score93.9 / 100
Social Vulnerability58.5 / 100
Community Resilience73.6 / 100

Hazard Breakdown

Tornado Relatively Moderate
Hurricane Relatively Moderate
Earthquake Relatively Low
Wildfire Very Low
Flood Relatively High
Hail Relatively Low
Strong Wind Relatively High
Heat Wave Relatively Moderate
Winter Weather Very High
Lightning Relatively High
Ice Storm Relatively Moderate
Drought Relatively Moderate
Cold Wave Very High
Landslide Relatively Low
Avalanche Very Low
Source: FEMA National Risk Index v1.20 (Dec 2025)

Earthquake History

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

Apr 5, 2024 2024 Tewksbury, New Jersey Earthquake M4.8 72 km 3 km
Jan 16, 1994 2 km W of Sinking Spring, Pennsylvania M4.6 43 km 5 km
Jan 16, 1994 0 km E of Sinking Spring, Pennsylvania M4.2 41 km 5 km
Apr 5, 2024 7 km WSW of Gladstone, New Jersey M3.7 73 km 4 km
Oct 23, 1990 3 km W of Hancocks Bridge, New Jersey M3.2 105 km 10 km
Jan 9, 1992 4 km WNW of Robertsville, New Jersey M3.1 103 km 8 km
Aug 26, 2003 4 km NNW of Milford, New Jersey M3.1 41 km 3 km
Jun 3, 2010 4 km ENE of Franklintown, Pennsylvania M3.1 127 km 2 km
Aug 3, 2025 0 km W of Little Ferry, New Jersey M3.0 134 km 10 km
Nov 14, 1997 0 km S of Rothsville, Pennsylvania M3.0 69 km 5 km
Feb 3, 2009 1 km ESE of Victory Gardens, New Jersey M3.0 98 km 0 km
Apr 24, 2009 1 km S of Franklintown, Pennsylvania M2.9 132 km 1 km
Apr 27, 2024 7 km WSW of Gladstone, New Jersey M2.9 73 km 5 km
Jan 16, 1994 0 km SSE of Sinking Spring, Pennsylvania M2.9 41 km 5 km
May 24, 2024 6 km E of Califon, New Jersey M2.9 73 km 7 km
Sep 15, 2019 5 km ESE of East Berlin, Pennsylvania M2.8 130 km 5 km
May 10, 1993 1 km NW of Whitfield, Pennsylvania M2.8 41 km 5 km
Aug 5, 2025 1 km N of Hillsdale, New Jersey M2.8 142 km 12 km
Jul 1, 2009 3 km ESE of Pennsville, New Jersey M2.8 90 km 5 km
Oct 25, 2009 4 km ENE of Franklintown, Pennsylvania M2.8 127 km 1 km
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.

Hurricane History

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

Year Name Category Max Wind Closest
2011 Irene Category 1 75 mph 266 km
1991 Bob Category 2 109 mph 278 km
1985 Gloria Category 2 98 mph 173 km
Source: NOAA IBTrACS (Category 1+, 1980–2026).

Tornado History

370 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF3. Total: 9 fatalities, 250 injuries.

Date Rating Distance Path Fatalities
Sep 1, 2021 EF3 90 km 12.4 mi 0
Jul 29, 2021 EF3 58 km 3.4 mi 0
Jul 14, 2004 EF3 89 km 7.5 mi 0
May 31, 1998 EF3 30 km 8.3 mi 0
Jul 27, 1994 EF3 83 km 4.0 mi 0
Jul 27, 1994 EF3 25 km 2.0 mi 3
Oct 18, 1990 EF3 66 km 0.5 mi 0
Jul 26, 1981 EF3 36 km 3.3 mi 0
Sep 26, 1977 EF3 88 km 5.9 mi 0
Mar 21, 1976 EF3 67 km 0.5 mi 0
May 28, 1973 EF3 97 km 0.4 mi 0
May 28, 1973 EF3 83 km 0.4 mi 0
Jun 18, 1970 EF3 64 km 1.9 mi 1
Apr 28, 1961 EF3 87 km 0.3 mi 0
Jun 24, 1960 EF3 69 km 12.9 mi 0
Mar 22, 1955 EF3 54 km 9.6 mi 1
Nov 4, 1950 EF3 56 km 15.9 mi 0
Feb 21, 2023 EF2 74 km 5.8 mi 0
Sep 1, 2021 EF2 47 km 8.3 mi 1
Sep 1, 2021 EF2 84 km 5.9 mi 0
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).

Tsunami History

2 tsunamis recorded within 500 km.

Year Location Cause Max Wave Deaths Distance
1895 HIGH BRIDGE, NJ Earthquake — — 61 km
1840 PHILADELPHIA, PENNSYLVANIA Earthquake — — 78 km
Source: NOAA/NCEI Historical Tsunami Database.

Wildfire History

20 wildfires (100+ acres) recorded within 100 km. Largest: 16 MILE (7,896 acres, 2016).

Year Name Acres Burned Distance
2016 16 MILE 7,896 90 km
2010 FORT DIX RANGE 1-14 2,615 100 km
1996 UNNAMED 2,122 100 km
2009 PENOBSCOT 2,091 87 km
1993 UNNAMED 1,860 100 km
2004 CRYSTAL LAKE 1,838 82 km
1985 UNNAMED 1,685 100 km
1995 UNNAMED 877 100 km
2012 HOPEWELL FIRE 812 31 km
2020 SEVEN PINES 790 81 km
1985 UNNAMED 737 98 km
2002 FIVE MILE FIRE 732 99 km
2015 RAZOR FIRE 728 38 km
2023 DRAGWAY 703 97 km
2015 PIPELINE 1 666 76 km
2016 BEAR TOWN 649 86 km
2001 UNNAMED 592 99 km
2014 TURKEY RUN ROAD 546 98 km
1999 UNNAMED 544 100 km
2024 COUNTY LINE WILDFIRE 515 99 km
Source: NIFC/IRWIN Wildfire Records (100+ acres).

Monthly Weather

Month Avg Temperature Precipitation Summary
January 30°F (-1°C) 3.4 in
February 29°F (-1°C) 2.9 in Coldest, Driest
March 38°F (4°C) 3.5 in
April 48°F (9°C) 3.9 in
May 59°F (15°C) 4.6 in Wettest
June 67°F (20°C) 4.2 in
July 74°F (23°C) 4.3 in Warmest
August 71°F (22°C) 4.2 in
September 64°F (18°C) 4.1 in
October 53°F (12°C) 3.4 in
November 43°F (6°C) 3.9 in
December 34°F (1°C) 3.6 in

Hereford has a seasonal temperature swing of 45°F / from 29°F in February to 74°F in July. Total annual precipitation is 45.9 inches, with May being the wettest month (4.6") and February the driest (2.9").

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