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Weather & Climate in Gromlongo, Italy
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Gromlongo enjoys a temperate climate with an average annual temperature of 58°F (14°C). Winters average 40°F in January while summers reach 76°F in July. The area gets 288 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 53.6 inches (wetter than the 38-inch national average). The area receives 1.6 inches of snow annually. The city sits at an elevation of 915 feet.
Temperature
40°F Jan (4°C)
76°F Jul (24°C)
| Annual Average | 57.9°F |
| 7% above US avg | |
| January Average | 40°F (4°C) |
| July Average | 76°F (24°C) |
| Sunny Days | 288 days/yr |
Geography
| Elevation | 915 ft (279 m) |
| Area | 3.9 sq mi (10.0 km²) |
| Population Density | 371/sq mi |
| Coordinates | 45.7290°N, 9.5410°W |
| Timezone | Europe/Rome |
Precipitation & Snow
Air Quality
Earthquake History
1,078 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M5.5.
| May 29, 2012 | 2 km NE of San Possidonio, Italy | M5.5 | 148 km | 7 km |
| Oct 15, 1996 | 2 km N of Correggio, Italy | M5.4 | 142 km | 10 km |
| May 29, 2012 | 2 km W of San Possidonio, Italy | M5.1 | 146 km | 10 km |
| Jun 3, 2012 | 3 km ENE of Novi di Modena, Italy | M5.1 | 143 km | 9 km |
| Jan 27, 2012 | 4 km SE of Berceto, Italy | M5.0 | 144 km | 60 km |
| Apr 11, 2003 | 1 km SSW of Carezzano Maggiore, Italy | M5.0 | 116 km | 4 km |
| Aug 21, 2000 | 1 km WNW of Oviglio, Italy | M4.9 | 127 km | 10 km |
| Apr 18, 2005 | 2 km WSW of Marsaglia, Italy | M4.9 | 115 km | 0 km |
| Jan 25, 2012 | 1 km N of Poviglio, Italy | M4.9 | 125 km | 33 km |
| Oct 29, 1995 | 0 km WNW of Adro, Italy | M4.9 | 34 km | 10 km |
| Dec 29, 1999 | 12 km N of Isolaccia, Italy | M4.8 | 114 km | 10 km |
| Feb 21, 1998 | 2 km ENE of Campagnola Emilia, Italy | M4.8 | 139 km | 10 km |
| May 29, 2012 | 3 km ENE of Novi di Modena, Italy | M4.8 | 143 km | 3 km |
| May 29, 2012 | 2 km W of San Possidonio, Italy | M4.8 | 146 km | 11 km |
| May 29, 2012 | 2 km NW of San Possidonio, Italy | M4.7 | 145 km | 5 km |
| Jul 18, 2001 | 3 km S of Masio, Italy | M4.7 | 133 km | 0 km |
| Oct 15, 1996 | 3 km WSW of Correggio, Italy | M4.7 | 144 km | 10 km |
| Nov 20, 1991 | 1 km WSW of Churwalden, Switzerland | M4.7 | 117 km | 10 km |
| Mar 5, 2012 | 3 km NNW of Santo Stefano d'Aveto, Italy | M4.7 | 129 km | 9 km |
| Aug 13, 2019 | 4 km SW of Stazione Valmozzola, Italy | M4.6 | 134 km | 10 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tsunami History
3 tsunamis recorded within 500 km. Highest wave on record: 95.0 m (312 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1987 | VALTELLINA | Meteorological | 95.0 m | 27 | 95 km |
| 1601 | LAKE LUCERNE | Eruption + Earthquake | 4.0 m | 8 | 144 km |
| 1868 | LAKE GARDA | Earthquake | — | — | 90 km |
Source: NOAA/NCEI Historical Tsunami Database.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 40°F (4°C) | 2.6 in | |
| February | 38°F (3°C) | 1.8 in | Driest |
| March | 45°F (7°C) | 2.8 in | |
| April | 50°F (10°C) | 3.5 in | |
| May | 59°F (15°C) | 4.8 in | Wettest |
| June | 65°F (19°C) | 4.5 in | |
| July | 76°F (24°C) | 3.7 in | Warmest |
| August | 70°F (21°C) | 4.1 in | |
| September | 63°F (17°C) | 4.7 in | |
| October | 53°F (12°C) | 4.7 in | |
| November | 43°F (6°C) | 3.3 in | |
| December | 37°F (3°C) | 2.3 in | Coldest |
Gromlongo has a seasonal temperature swing of 39°F / from 37°F in December to 76°F in July. Total annual precipitation is 42.8 inches, with May being the wettest month (4.8") and February the driest (1.8").