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Weather & Climate in Saint-Denis, Italy
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Saint-Denis has a cool climate with an average annual temperature of 42°F (6°C). Winters average 29°F in January while summers reach 58°F in July. The area gets 267 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 38.0 inches. The area receives 15.8 inches of snow annually, a moderate snowfall amount. The city sits at an elevation of 2,690 feet.
Temperature
29°F Jan (-2°C)
58°F Jul (15°C)
| Annual Average | 42.1°F |
| 22% below US avg | |
| January Average | 29°F (-2°C) |
| July Average | 58°F (15°C) |
| Sunny Days | 267 days/yr |
Geography
| Elevation | 2,690 ft (820 m) |
| Area | 19.9 sq mi (51.6 km²) |
| Population Density | 5/sq mi |
| Coordinates | 45.7526°N, 7.5553°W |
| Timezone | Europe/Rome |
Precipitation & Snow
Air Quality
Earthquake History
1,536 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 | 150 km | 4 km |
| Aug 21, 2000 | 1 km WNW of Oviglio, Italy | M4.9 | 122 km | 10 km |
| Apr 7, 2014 | 7 km SE of Guillestre, France | M4.8 | 144 km | 8 km |
| Feb 14, 1999 | 3 km NNE of Belfaux, Switzerland | M4.7 | 127 km | 10 km |
| Jul 18, 2001 | 3 km S of Masio, Italy | M4.7 | 122 km | 0 km |
| Jan 20, 1994 | 1 km NE of Melle, Italy | M4.6 | 133 km | 10 km |
| Feb 11, 1991 | 5 km ESE of Briançon, France | M4.6 | 119 km | 14 km |
| Dec 14, 1994 | 7 km SSE of Amancy, France | M4.5 | 97 km | 10 km |
| Apr 19, 2009 | 1 km ENE of Bandito, Italy | M4.5 | 116 km | 40 km |
| Mar 12, 2022 | 3 km S of Faverges, France | M4.5 | 99 km | 3 km |
| Oct 3, 2012 | 2 km N of Melle, Italy | M4.5 | 131 km | 10 km |
| Jul 15, 1996 | 3 km NE of Chilly, France | M4.5 | 126 km | 5 km |
| Jul 25, 2011 | 5 km NW of Cantalupa, Italy | M4.4 | 88 km | 25 km |
| May 24, 1995 | 7 km NE of Le Chenit, Switzerland | M4.4 | 138 km | 6 km |
| Jul 23, 1996 | 4 km W of Choisy, France | M4.4 | 123 km | 10 km |
| Jun 14, 1993 | 3 km S of Vogogna, Italy | M4.4 | 63 km | 10 km |
| Nov 21, 1995 | 1 km SW of Collegno, Italy | M4.4 | 76 km | 22 km |
| Apr 29, 2003 | 2 km SSW of Varen, Switzerland | M4.3 | 61 km | 8 km |
| Jan 20, 1994 | 1 km SW of Melle, Italy | M4.3 | 134 km | 10 km |
| Jun 30, 2010 | 3 km NW of Saint-Martin-de-Belleville, France | M4.3 | 92 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 | 137 km |
| 1996 | LAKE BRIENZ | Meteorological | 0.5 m | — | 113 km |
| 563 | LAKE GENEVA | Meteorological | — | — | 88 km |
Source: NOAA/NCEI Historical Tsunami Database.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 29°F (-2°C) | 3.0 in | Coldest |
| February | 30°F (-1°C) | 3.1 in | |
| March | 33°F (1°C) | 3.0 in | |
| April | 38°F (3°C) | 3.3 in | |
| May | 46°F (8°C) | 3.8 in | Wettest |
| June | 53°F (11°C) | 3.2 in | |
| July | 58°F (15°C) | 2.5 in | Driest |
| August | 58°F (15°C) | 3.0 in | Warmest |
| September | 52°F (11°C) | 2.7 in | |
| October | 44°F (7°C) | 3.8 in | |
| November | 35°F (2°C) | 3.5 in | |
| December | 30°F (-1°C) | 3.2 in |
Saint-Denis has a seasonal temperature swing of 29°F / from 29°F in January to 58°F in August. Total annual precipitation is 38.0 inches, with May being the wettest month (3.8") and July the driest (2.5").