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Weather & Climate in Mars, PA
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Mars experiences four distinct seasons with an average annual temperature of 53°F (11°C). Winters average 30°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 38.3 inches. Air quality is rated Good with a median AQI of 40. The city sits at an elevation of 1,093 feet.
Temperature
30°F Jan (-1°C)
75°F Jul (24°C)
| Annual Average | 52.6°F |
| 3% below US avg | |
| January Average | 30°F (-1°C) |
| July Average | 75°F (24°C) |
| Sunny Days | 275 days/yr |
Geography
| Elevation | 1,093 ft (333 m) |
| Area | 0.2 sq mi (0.5 km²) |
| Population Density | 2,670/sq mi |
| Coordinates | 40.6970°N, 80.0141°W |
| Timezone | America/New_York |
| County | Beaver County County |
| Nearest Airport | Pittsburgh/Butler Regional (BTP) 6 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 40.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 75.3 / 100 |
| Social Vulnerability | 37.7 / 100 |
| Community Resilience | 91.8 / 100 |
Hazard Breakdown
| Tornado | Relatively Low |
| Hurricane | Very Low |
| Earthquake | Very Low |
| Wildfire | Very Low |
| Flood | Relatively Moderate |
| Hail | Relatively Moderate |
| Strong Wind | Relatively Moderate |
| Heat Wave | Relatively Low |
| Winter Weather | Relatively Low |
| Lightning | Relatively Moderate |
| Ice Storm | Relatively Moderate |
| Drought | No Rating |
| Cold Wave | Very Low |
| Landslide | Relatively Low |
| Avalanche | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Earthquake History
19 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.5.
| Sep 25, 1998 | 2 km SW of Adamsville, Pennsylvania | M4.5 | 94 km | 5 km |
| Mar 12, 2007 | Ohio | M3.7 | 132 km | 5 km |
| Oct 16, 1993 | 8 km SSE of Madison, Ohio | M3.6 | 139 km | 5 km |
| Aug 28, 2023 | 7 km SE of Madison, Ohio | M3.6 | 140 km | 5 km |
| Jun 3, 2001 | 3 km N of Edgewood, Ohio | M3.4 | 148 km | 5 km |
| Jun 3, 2017 | 1 km WNW of Batesville, Ohio | M3.4 | 139 km | 2 km |
| Jun 30, 2004 | 2 km WNW of Madison, Ohio | M3.3 | 150 km | 5 km |
| Apr 25, 2010 | 2 km WNW of Madison, Ohio | M3.0 | 150 km | 5 km |
| Mar 30, 2024 | 2 km SSW of Maple Ridge, Ohio | M3.0 | 91 km | 6 km |
| Aug 7, 2000 | 2 km S of Limaville, Ohio | M2.9 | 100 km | 5 km |
| Feb 23, 1995 | 3 km W of Ashtabula, Ohio | M2.9 | 147 km | 5 km |
| May 17, 2010 | 2 km S of Boston Heights, Ohio | M2.7 | 139 km | 5 km |
| Jun 1, 2024 | 1 km E of Madison, Ohio | M2.6 | 147 km | 5 km |
| Jan 5, 2024 | 3 km SE of Madison, Ohio | M2.6 | 144 km | 9 km |
| Jan 20, 2001 | 0 km NNW of Edgewood, Ohio | M2.6 | 146 km | 5 km |
| May 12, 2025 | 4 km ESE of Madison, Ohio | M2.5 | 144 km | 4 km |
| Jul 17, 2003 | 1 km SE of Edgewood, Ohio | M2.5 | 144 km | 3 km |
| Sep 11, 2024 | 4 km WNW of Claysville, Pennsylvania | M2.5 | 73 km | 4 km |
| Dec 17, 1990 | 5 km SSE of Middleboro, Pennsylvania | M2.5 | 140 km | 5 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tornado History
319 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF4. Total: 35 fatalities, 731 injuries.
| Date | Rating | Distance | Path | Fatalities |
| Jun 2, 1998 | EF4 | 99 km | 36.5 mi | 0 |
| May 31, 1985 | EF4 | 97 km | 56.2 mi | 16 |
| Jun 3, 1980 | EF4 | 25 km | 11.8 mi | 0 |
| May 31, 1985 | EF3 | 41 km | 39.0 mi | 9 |
| Oct 12, 1978 | EF3 | 77 km | 7.3 mi | 0 |
| Jul 11, 1976 | EF3 | 58 km | 11.8 mi | 1 |
| May 2, 1972 | EF3 | 88 km | 7.9 mi | 0 |
| Aug 3, 1963 | EF3 | 43 km | 0.1 mi | 2 |
| Aug 5, 1956 | EF3 | 77 km | 0.1 mi | 2 |
| Mar 1, 1955 | EF3 | 84 km | 2.5 mi | 1 |
| Jun 26, 2024 | EF2 | 45 km | 10.8 mi | 0 |
| May 11, 2024 | EF2 | 48 km | 5.8 mi | 0 |
| May 7, 2024 | EF2 | 68 km | 15.3 mi | 0 |
| Aug 25, 2023 | EF2 | 94 km | 2.0 mi | 0 |
| Aug 1, 2022 | EF2 | 87 km | 1.8 mi | 0 |
| Mar 31, 2022 | EF2 | 56 km | 8.6 mi | 0 |
| Oct 21, 2021 | EF2 | 67 km | 15.7 mi | 0 |
| Jul 29, 2021 | EF2 | 83 km | 6.2 mi | 0 |
| Oct 2, 2018 | EF2 | 81 km | 1.6 mi | 0 |
| Oct 2, 2018 | EF2 | 87 km | 4.1 mi | 0 |
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 30°F (-1°C) | 2.5 in | |
| February | 29°F (-2°C) | 2.2 in | Coldest, Driest |
| March | 38°F (3°C) | 3.2 in | |
| April | 49°F (9°C) | 3.2 in | |
| May | 59°F (15°C) | 3.9 in | |
| June | 67°F (20°C) | 4.1 in | Wettest |
| July | 75°F (24°C) | 4.0 in | Warmest |
| August | 70°F (21°C) | 3.5 in | |
| September | 63°F (17°C) | 3.4 in | |
| October | 52°F (11°C) | 2.7 in | |
| November | 42°F (5°C) | 3.2 in | |
| December | 32°F (-0°C) | 3.0 in |
Mars has a seasonal temperature swing of 46°F / from 29°F in February to 75°F in July. Total annual precipitation is 38.8 inches, with June being the wettest month (4.1") and February the driest (2.2").