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Weather & Climate in Grignasco, Italy
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Grignasco enjoys a temperate climate with an average annual temperature of 56°F (13°C). Winters average 38°F in January while summers reach 74°F in July. The area gets 291 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 53.5 inches (wetter than the 38-inch national average). The area receives 2.9 inches of snow annually. The city sits at an elevation of 1,056 feet.
Temperature
38°F Jan (4°C)
74°F Jul (23°C)
| Annual Average | 56.1°F |
| 4% above US avg | |
| January Average | 38°F (4°C) |
| July Average | 74°F (23°C) |
| Sunny Days | 291 days/yr |
Geography
| Elevation | 1,056 ft (322 m) |
| Area | 10.9 sq mi (28.1 km²) |
| Population Density | 366/sq mi |
| Coordinates | 45.6798°N, 8.3444°W |
| Timezone | Europe/Rome |
Precipitation & Snow
Air Quality
Earthquake History
1,217 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M5.0.
| Apr 11, 2003 | 1 km SSW of Carezzano Maggiore, Italy | M5.0 | 108 km | 4 km |
| Oct 29, 1995 | 0 km WNW of Adro, Italy | M4.9 | 126 km | 10 km |
| Apr 18, 2005 | 2 km WSW of Marsaglia, Italy | M4.9 | 134 km | 0 km |
| Aug 21, 2000 | 1 km WNW of Oviglio, Italy | M4.9 | 91 km | 10 km |
| Jul 18, 2001 | 3 km S of Masio, Italy | M4.7 | 94 km | 0 km |
| Jan 20, 1994 | 1 km NE of Melle, Italy | M4.6 | 147 km | 10 km |
| Oct 3, 2012 | 1 km WSW of Lugagnano Val d'Arda, Italy | M4.5 | 150 km | 22 km |
| Oct 3, 2012 | 2 km N of Melle, Italy | M4.5 | 146 km | 10 km |
| Apr 19, 2009 | 1 km ENE of Bandito, Italy | M4.5 | 113 km | 40 km |
| Feb 17, 1992 | 4 km NNE of Scharans, Switzerland | M4.5 | 148 km | 10 km |
| Apr 16, 2020 | 2 km SE of Marsaglia, Italy | M4.5 | 137 km | 10 km |
| Aug 28, 1994 | 6 km SSW of Muotathal, Switzerland | M4.5 | 141 km | 8 km |
| Jun 14, 1993 | 3 km S of Vogogna, Italy | M4.4 | 34 km | 10 km |
| Nov 21, 1995 | 1 km SW of Collegno, Italy | M4.4 | 92 km | 22 km |
| Jul 25, 2011 | 5 km NW of Cantalupa, Italy | M4.4 | 114 km | 25 km |
| Feb 11, 1990 | northern Italy | M4.3 | 94 km | 10 km |
| Jan 20, 1994 | 1 km SW of Melle, Italy | M4.3 | 149 km | 10 km |
| Apr 29, 2003 | 2 km SSW of Varen, Switzerland | M4.3 | 90 km | 8 km |
| Mar 31, 1996 | 7 km NNW of Bionaz, Italy | M4.3 | 79 km | 5 km |
| Jun 30, 2010 | 3 km NW of Saint-Martin-de-Belleville, France | M4.3 | 149 km | 2 km |
Source: USGS Earthquake Catalog (M2.5+, 1990-2025). Sorted by magnitude.
Tsunami History
3 tsunamis recorded within 500 km. Highest wave on record: 4.0 m (13 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1601 | LAKE LUCERNE | Eruption + Earthquake | 4.0 m | 8 | 125 km |
| 1996 | LAKE BRIENZ | Meteorological | 0.5 m | - | 120 km |
| 563 | LAKE GENEVA | Meteorological | - | - | 140 km |
Source: NOAA/NCEI Historical Tsunami Database.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 38°F (4°C) | 2.3 in | |
| February | 37°F (3°C) | 2.4 in | |
| March | 44°F (6°C) | 3.3 in | |
| April | 50°F (10°C) | 3.9 in | |
| May | 58°F (14°C) | 5.1 in | Wettest |
| June | 64°F (18°C) | 4.2 in | |
| July | 74°F (23°C) | 3.0 in | Warmest |
| August | 68°F (20°C) | 4.0 in | |
| September | 61°F (16°C) | 3.7 in | |
| October | 51°F (11°C) | 4.2 in | |
| November | 41°F (5°C) | 3.3 in | |
| December | 35°F (2°C) | 2.0 in | Coldest, Driest |
Grignasco has a seasonal temperature swing of 39°F / from 35°F in December to 74°F in July. Total annual precipitation is 41.5 inches, with May being the wettest month (5.1") and December the driest (2.0").