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Weather & Climate in Dauphin, PA
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Dauphin experiences four distinct seasons with an average annual temperature of 52°F (11°C). Winters average 29°F in January while summers reach 75°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 45.2 inches. The area receives 23.9 inches of snow annually, a moderate snowfall amount. Air quality is rated Good with a median AQI of 48. 56% of days have good air quality. The city sits at an elevation of 424 feet.
Temperature
29°F Jan (-2°C)
75°F Jul (24°C)
| Annual Average | 51.9°F |
| 4% below US avg | |
| January Average | 29°F (-2°C) |
| July Average | 75°F (24°C) |
| Sunny Days | 275 days/yr |
Geography
| Elevation | 424 ft (129 m) |
| Area | 0.2 sq mi (0.4 km²) |
| Population Density | 2,477/sq mi |
| Coordinates | 40.3683°N, 76.9302°W |
| Timezone | America/New_York |
| County | Dauphin County County |
| Nearest Airport | Harrisburg International (MDT) 15 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 48.0 |
| Rating | Good |
| Good Days % | 56.3% |
| Unhealthy Days | 2 |
Natural Hazard Risk
| Overall Risk | Relatively Moderate |
| Risk Score | 91.1 / 100 |
| Social Vulnerability | 37.9 / 100 |
| Community Resilience | 96.6 / 100 |
Hazard Breakdown
| Tornado | Relatively Moderate |
| Hurricane | Relatively Moderate |
| Earthquake | Relatively Low |
| Wildfire | Very Low |
| Flood | Relatively High |
| Hail | Very Low |
| Strong Wind | Relatively High |
| Heat Wave | Relatively Moderate |
| Winter Weather | Very High |
| Lightning | Relatively High |
| Ice Storm | Relatively Low |
| Drought | Relatively Low |
| Cold Wave | Relatively Moderate |
| Landslide | Relatively Low |
| Avalanche | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Earthquake History
26 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.6.
| Jan 16, 1994 | 2 km W of Sinking Spring, Pennsylvania | M4.6 | 76 km | 5 km |
| Jan 16, 1994 | 0 km E of Sinking Spring, Pennsylvania | M4.2 | 78 km | 5 km |
| Jul 16, 2010 | 5 km NNW of Barnesville, Maryland | M3.6 | 130 km | 7 km |
| Jun 13, 2019 | 9 km N of Blain, Pennsylvania | M3.4 | 49 km | 27 km |
| Jun 3, 2010 | 4 km ENE of Franklintown, Pennsylvania | M3.1 | 32 km | 2 km |
| Jan 17, 2016 | 3 km NE of Ranson, West Virginia | M3.0 | 140 km | 5 km |
| Nov 14, 1997 | 0 km S of Rothsville, Pennsylvania | M3.0 | 63 km | 5 km |
| Apr 24, 2009 | 1 km S of Franklintown, Pennsylvania | M2.9 | 35 km | 1 km |
| Jan 16, 1994 | 0 km SSE of Sinking Spring, Pennsylvania | M2.9 | 78 km | 5 km |
| Sep 15, 2019 | 5 km ESE of East Berlin, Pennsylvania | M2.8 | 49 km | 5 km |
| Jun 10, 2025 | 10 km NW of Forksville, Pennsylvania | M2.8 | 135 km | 8 km |
| May 10, 1993 | 1 km NW of Whitfield, Pennsylvania | M2.8 | 77 km | 5 km |
| Jul 1, 2009 | 3 km ESE of Pennsville, New Jersey | M2.8 | 147 km | 5 km |
| Oct 25, 2009 | 4 km ENE of Franklintown, Pennsylvania | M2.8 | 31 km | 1 km |
| Mar 15, 1993 | 5 km W of Columbia, Maryland | M2.7 | 126 km | 5 km |
| Oct 28, 1994 | 1 km E of Mount Vernon, Maryland | M2.7 | 122 km | - |
| Mar 11, 1995 | 0 km ENE of Landisville, Pennsylvania | M2.7 | 54 km | 5 km |
| Jan 25, 2015 | 4 km ESE of Downingtown, Pennsylvania | M2.6 | 116 km | 2 km |
| Jan 13, 1990 | 6 km ENE of Eldersburg, Maryland | M2.6 | 105 km | 5 km |
| Jun 25, 2021 | 2 km SE of Woodlawn, Maryland | M2.6 | 120 km | 3 km |
Source: USGS Earthquake Catalog (M2.5+, 1990-2025). Sorted by magnitude.
Hurricane History
1 hurricane (Category 1+) recorded within 500 km since 1980. Strongest on record: Category 1.
| Year | Name | Category | Max Wind | Closest |
| 1985 | Gloria | Category 2 | 98 mph | 286 km |
Source: NOAA IBTrACS (Category 1+, 1980-2026).
Tornado History
329 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF3. Total: 8 fatalities, 190 injuries.
| Date | Rating | Distance | Path | Fatalities |
| Jul 14, 2004 | EF3 | 31 km | 7.5 mi | 0 |
| May 31, 1998 | EF3 | 88 km | 8.3 mi | 0 |
| Jul 19, 1996 | EF3 | 97 km | 2.2 mi | 0 |
| May 31, 1985 | EF3 | 92 km | 19.0 mi | 6 |
| May 22, 1983 | EF3 | 79 km | 2.0 mi | 0 |
| Jun 7, 1980 | EF3 | 49 km | 1.5 mi | 0 |
| Jul 29, 1976 | EF3 | 97 km | 25.0 mi | 0 |
| Jun 18, 1970 | EF3 | 54 km | 1.9 mi | 1 |
| Apr 16, 1961 | EF3 | 61 km | 0.1 mi | 0 |
| Apr 5, 1952 | EF3 | 63 km | 17.5 mi | 0 |
| Nov 4, 1950 | EF3 | 71 km | 15.9 mi | 0 |
| May 28, 2019 | EF2 | 90 km | 3.1 mi | 0 |
| Apr 19, 2019 | EF2 | 61 km | 4.9 mi | 0 |
| Apr 19, 2019 | EF2 | 94 km | 2.9 mi | 0 |
| Feb 24, 2016 | EF2 | 86 km | 4.9 mi | 0 |
| May 23, 2011 | EF2 | 39 km | 4.7 mi | 0 |
| Apr 28, 2011 | EF2 | 29 km | 2.6 mi | 0 |
| Apr 28, 2011 | EF2 | 32 km | 1.1 mi | 0 |
| Sep 18, 2004 | EF2 | 88 km | 2.0 mi | 0 |
| Sep 24, 2001 | EF2 | 71 km | 5.0 mi | 0 |
Source: NOAA Storm Prediction Center (EF0+, 1950-2024, US only).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 29°F (-2°C) | 2.8 in | Coldest |
| February | 31°F (-1°C) | 2.8 in | Driest |
| March | 39°F (4°C) | 3.4 in | |
| April | 50°F (10°C) | 3.5 in | |
| May | 60°F (16°C) | 4.3 in | Wettest |
| June | 68°F (20°C) | 4.2 in | |
| July | 75°F (24°C) | 3.8 in | Warmest |
| August | 72°F (22°C) | 3.4 in | |
| September | 65°F (18°C) | 3.9 in | |
| October | 53°F (12°C) | 3.2 in | |
| November | 43°F (6°C) | 3.6 in | |
| December | 34°F (1°C) | 3.2 in |
Dauphin has a seasonal temperature swing of 46°F / from 29°F in January to 75°F in July. Total annual precipitation is 42.1 inches, with May being the wettest month (4.3") and February the driest (2.8").