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Weather & Climate in Isolaccia, Italy
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Isolaccia has a cool climate with an average annual temperature of 32°F (-0°C). Winters average 18°F in January while summers reach 47°F in July. The area gets 290 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 25.3 inches (drier than the 38-inch national average). The area receives 12.0 inches of snow annually. The city sits at an elevation of 4,429 feet.
Temperature
18°F Jan (-8°C)
47°F Jul (8°C)
| Annual Average | 31.5°F |
| 42% below US avg | |
| January Average | 18°F (-8°C) |
| July Average | 47°F (8°C) |
| Sunny Days | 290 days/yr |
Geography
| Elevation | 4,429 ft (1,350 m) |
| Area | 78.9 sq mi (204.3 km²) |
| Population Density | 15/sq mi |
| Coordinates | 46.4890°N, 10.2941°W |
| Timezone | Europe/Rome |
Precipitation & Snow
Air Quality
Earthquake History
633 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.9.
| Oct 29, 1995 | 0 km WNW of Adro, Italy | M4.9 | 100 km | 10 km |
| Dec 29, 1999 | 12 km N of Isolaccia, Italy | M4.8 | 13 km | 10 km |
| Jul 17, 2001 | 3 km NNE of Rifiano, Italy | M4.7 | 75 km | 10 km |
| Nov 20, 1991 | 1 km WSW of Churwalden, Switzerland | M4.7 | 67 km | 10 km |
| Mar 31, 1994 | 2 km W of Warth, Austria | M4.7 | 85 km | 14 km |
| Jun 5, 1997 | 2 km ESE of Namlos, Austria | M4.6 | 100 km | 5 km |
| Aug 28, 1994 | 6 km SSW of Muotathal, Switzerland | M4.5 | 128 km | 8 km |
| Apr 6, 2000 | 11 km WSW of Tubre, Italy | M4.5 | 13 km | 5 km |
| Oct 1, 2001 | 11 km WSW of Tubre, Italy | M4.5 | 14 km | 10 km |
| Feb 17, 1992 | 4 km NNE of Scharans, Switzerland | M4.5 | 69 km | 10 km |
| Jan 4, 2009 | 3 km S of Wildhaus, Switzerland | M4.5 | 104 km | 3 km |
| Nov 22, 1997 | 4 km SSW of Krummenau, Switzerland | M4.4 | 118 km | 10 km |
| May 15, 1992 | 1 km W of Sennwald, Switzerland | M4.4 | 106 km | 5 km |
| May 8, 1992 | 2 km WSW of Sennwald, Switzerland | M4.4 | 106 km | 5 km |
| May 8, 1992 | 0 km NNW of Sennwald, Switzerland | M4.4 | 106 km | 5 km |
| Nov 16, 1995 | 1 km ENE of Einsiedeln, Switzerland | M4.3 | 137 km | 5 km |
| Feb 22, 2021 | 2 km SSE of Brentonico, Italy | M4.3 | 93 km | 11 km |
| May 6, 2003 | 7 km WSW of Linthal, Switzerland | M4.3 | 116 km | 6 km |
| Oct 24, 1994 | 3 km ESE of Piazza, Italy | M4.3 | 99 km | 18 km |
| Dec 31, 1999 | 11 km WSW of Tubre, Italy | M4.3 | 13 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 | 13 km |
| 1601 | LAKE LUCERNE | Eruption + Earthquake | 4.0 m | 8 | 141 km |
| 1868 | LAKE GARDA | Earthquake | — | — | 93 km |
Source: NOAA/NCEI Historical Tsunami Database.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 18°F (-8°C) | 1.6 in | Coldest |
| February | 18°F (-8°C) | 1.3 in | Driest |
| March | 22°F (-5°C) | 1.7 in | |
| April | 27°F (-3°C) | 1.9 in | |
| May | 36°F (2°C) | 2.3 in | |
| June | 42°F (6°C) | 2.8 in | |
| July | 47°F (8°C) | 2.9 in | Wettest |
| August | 47°F (8°C) | 2.9 in | Warmest |
| September | 42°F (5°C) | 2.4 in | |
| October | 35°F (1°C) | 2.2 in | |
| November | 25°F (-4°C) | 1.9 in | |
| December | 20°F (-7°C) | 1.6 in |
Isolaccia has a seasonal temperature swing of 29°F / from 18°F in January to 47°F in August. Total annual precipitation is 25.3 inches, with July being the wettest month (2.9") and February the driest (1.3").