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Weather & Climate in Saint-Ismier, France
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Saint-Ismier enjoys a temperate climate with an average annual temperature of 56°F (13°C). Winters average 38°F in January while summers reach 73°F in July. The area gets 283 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 76.7 inches (wetter than the 38-inch national average). The area receives 42.3 inches of snow annually, making winter weather a significant factor for residents. The city sits at an elevation of 1,204 feet.
Temperature
38°F Jan (3°C)
73°F Jul (23°C)
| Annual Average | 55.7°F |
| 3% above US avg | |
| January Average | 38°F (3°C) |
| July Average | 73°F (23°C) |
| Sunny Days | 283 days/yr |
Geography
| Elevation | 1,204 ft (367 m) |
| Area | 8.4 sq mi (21.8 km²) |
| Population Density | 788/sq mi |
| Coordinates | 45.2523°N, 5.8307°W |
| Timezone | Europe/Paris |
Precipitation & Snow
Air Quality
Earthquake History
1,440 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.8.
| Oct 31, 1997 | 12 km SE of Seyne-les-Alpes, France | M4.8 | 120 km | 10 km |
| Apr 7, 2014 | 7 km SE of Guillestre, France | M4.8 | 100 km | 8 km |
| Feb 11, 1991 | 5 km ESE of Briançon, France | M4.6 | 81 km | 14 km |
| Jan 20, 1994 | 1 km NE of Melle, Italy | M4.6 | 141 km | 10 km |
| Dec 14, 1994 | 7 km SSE of Amancy, France | M4.5 | 94 km | 10 km |
| Jul 15, 1996 | 3 km NE of Chilly, France | M4.5 | 86 km | 5 km |
| Mar 2, 2012 | 8 km NNW of Jausiers, France | M4.5 | 109 km | 10 km |
| Oct 3, 2012 | 2 km N of Melle, Italy | M4.5 | 138 km | 10 km |
| Mar 12, 2022 | 3 km S of Faverges, France | M4.5 | 63 km | 3 km |
| Nov 21, 1995 | 1 km SW of Collegno, Italy | M4.4 | 136 km | 22 km |
| Jul 23, 1996 | 4 km W of Choisy, France | M4.4 | 84 km | 10 km |
| Jul 25, 2011 | 5 km NW of Cantalupa, Italy | M4.4 | 118 km | 25 km |
| Feb 11, 1990 | northern Italy | M4.3 | 142 km | 10 km |
| Jan 20, 1994 | 1 km SW of Melle, Italy | M4.3 | 140 km | 10 km |
| Jun 30, 2010 | 3 km NW of Saint-Martin-de-Belleville, France | M4.3 | 53 km | 2 km |
| Mar 31, 1996 | 7 km NNW of Bionaz, Italy | M4.3 | 144 km | 5 km |
| Jan 11, 1999 | 2 km W of Saint-Paul-de-Varces, France | M4.2 | 26 km | 10 km |
| Jul 30, 2016 | 0 km SSW of Fleccia-Chianavasso, Italy | M4.2 | 114 km | 11 km |
| May 14, 2004 | 0 km SSE of Chiusa di San Michele, Italy | M4.2 | 119 km | 10 km |
| Feb 26, 2012 | 13 km ESE of Embrun, France | M4.2 | 103 km | 2 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tsunami History
1 tsunami recorded within 500 km.
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 563 | LAKE GENEVA | Meteorological | — | — | 145 km |
Source: NOAA/NCEI Historical Tsunami Database.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 38°F (3°C) | 3.5 in | |
| February | 36°F (2°C) | 3.3 in | |
| March | 41°F (5°C) | 3.5 in | |
| April | 46°F (8°C) | 3.5 in | |
| May | 55°F (13°C) | 4.1 in | |
| June | 61°F (16°C) | 3.9 in | |
| July | 73°F (23°C) | 2.7 in | Warmest, Driest |
| August | 65°F (18°C) | 3.1 in | |
| September | 58°F (15°C) | 4.2 in | |
| October | 50°F (10°C) | 4.5 in | |
| November | 41°F (5°C) | 4.6 in | Wettest |
| December | 36°F (2°C) | 3.7 in | Coldest |
Saint-Ismier has a seasonal temperature swing of 37°F / from 36°F in December to 73°F in July. Total annual precipitation is 44.5 inches, with November being the wettest month (4.6") and July the driest (2.7").