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Weather & Climate in San Marco, Italy
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
San Marco enjoys a temperate climate with an average annual temperature of 58°F (15°C). Winters average 43°F in January while summers reach 77°F in July. The area gets 299 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 41.1 inches. The area receives 12.1 inches of snow annually. The city sits at an elevation of 112 feet.
Temperature
43°F Jan (6°C)
77°F Jul (25°C)
| Annual Average | 58.4°F |
| 8% above US avg | |
| January Average | 43°F (6°C) |
| July Average | 77°F (25°C) |
| Sunny Days | 299 days/yr |
Geography
| Elevation | 112 ft (34 m) |
| Area | 9.9 sq mi (25.5 km²) |
| Population Density | 57/sq mi |
| Coordinates | 43.2105°N, 13.7497°W |
| Timezone | Europe/Rome |
Precipitation & Snow
Air Quality
Earthquake History
1,638 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M6.3.
| Apr 6, 2009 | 3 km SE of Sassa, Italy | M6.3 | 103 km | 9 km |
| Aug 24, 2016 | 5 km WNW of Accumoli, Italy | M6.2 | 71 km | 4 km |
| Sep 26, 1997 | 3 km SSE of Nocera Umbra, Italy | M6.0 | 77 km | 10 km |
| Jan 18, 2017 | 5 km ESE of Cittareale, Italy | M5.7 | 80 km | 7 km |
| Sep 26, 1997 | 6 km WSW of Serravalle di Chienti, Italy | M5.7 | 73 km | 10 km |
| Jan 18, 2017 | 4 km SE of Cittareale, Italy | M5.6 | 83 km | 10 km |
| Aug 24, 2016 | 5 km S of Castelsantangelo sul Nera, Italy | M5.6 | 64 km | 3 km |
| Oct 14, 1997 | 8 km NNW of Sellano, Italy | M5.5 | 75 km | 10 km |
| Apr 7, 2009 | 1 km SW of San Panfilo d'Ocre, Italy | M5.5 | 107 km | 15 km |
| Mar 29, 2003 | 51 km W of Komiža, Croatia | M5.5 | 140 km | 10 km |
| Oct 6, 1997 | 6 km E of Valtopina, Italy | M5.5 | 77 km | 10 km |
| Mar 26, 1998 | 1 km E of Esanatoglia, Italy | M5.4 | 63 km | 10 km |
| Apr 9, 2009 | 5 km SE of Capitignano, Italy | M5.4 | 87 km | 15 km |
| Jul 21, 2013 | 3 km ENE of Marcelli, Italy | M5.4 | 33 km | 8 km |
| Jan 18, 2017 | 4 km SW of Accumoli, Italy | M5.3 | 75 km | 10 km |
| Oct 3, 1997 | 3 km ENE of Valtopina, Italy | M5.3 | 79 km | 10 km |
| Oct 12, 1997 | 2 km NW of Sellano, Italy | M5.3 | 77 km | 10 km |
| Apr 9, 2009 | 2 km ESE of Capitignano, Italy | M5.2 | 85 km | 3 km |
| Jan 18, 2017 | 3 km N of Montereale, Italy | M5.2 | 83 km | 7 km |
| Apr 3, 1998 | 8 km E of Valfabbrica, Italy | M5.2 | 85 km | 10 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tsunami History
3 tsunamis recorded within 500 km.
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1930 | CENTRAL ADRIATIC | Earthquake | — | 18 | 79 km |
| 1916 | CENTRAL ADRIATIC | Earthquake | — | 4 | 109 km |
| 1672 | CENTRAL ADRIATIC | Earthquake | — | 1,500 | 124 km |
Source: NOAA/NCEI Historical Tsunami Database.
Nearby Volcanoes
2 volcanoes within 200 km. Closest: Vulsini (163 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Vulsini | Caldera | 800 m (2,625 ft) | -104 | 163 km |
| Colli Albani | Caldera | 949 m (3,114 ft) | Unknown | 186 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 43°F (6°C) | 1.9 in | Coldest |
| February | 44°F (7°C) | 1.7 in | |
| March | 48°F (9°C) | 2.1 in | |
| April | 54°F (12°C) | 2.2 in | |
| May | 62°F (17°C) | 1.9 in | |
| June | 69°F (21°C) | 2.3 in | |
| July | 77°F (25°C) | 1.7 in | Warmest, Driest |
| August | 74°F (23°C) | 2.3 in | |
| September | 68°F (20°C) | 2.8 in | |
| October | 60°F (15°C) | 2.8 in | |
| November | 51°F (10°C) | 3.0 in | Wettest |
| December | 45°F (7°C) | 2.4 in |
San Marco has a seasonal temperature swing of 34°F / from 43°F in January to 77°F in July. Total annual precipitation is 27.0 inches, with November being the wettest month (3.0") and July the driest (1.7").