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Weather & Climate in Saint-Just-Chaleyssin, France
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Saint-Just-Chaleyssin enjoys a temperate climate with an average annual temperature of 56°F (13°C). Winters average 40°F in January while summers reach 73°F in July. The area gets 261 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 35.0 inches. The area receives 5.1 inches of snow annually. The city sits at an elevation of 1,010 feet.
Temperature
40°F Jan (4°C)
73°F Jul (23°C)
| Annual Average | 55.9°F |
| 4% above US avg | |
| January Average | 40°F (4°C) |
| July Average | 73°F (23°C) |
| Sunny Days | 261 days/yr |
Geography
| Elevation | 1,010 ft (308 m) |
| Area | 14.7 sq mi (38.1 km²) |
| Population Density | 165/sq mi |
| Coordinates | 45.5942°N, 4.9985°W |
| Timezone | Europe/Paris |
Precipitation & Snow
Air Quality
Earthquake History
420 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.5.
| Jul 15, 1996 | 3 km NE of Chilly, France | M4.5 | 89 km | 5 km |
| Dec 14, 1994 | 7 km SSE of Amancy, France | M4.5 | 115 km | 10 km |
| Mar 12, 2022 | 3 km S of Faverges, France | M4.5 | 101 km | 3 km |
| Jul 23, 1996 | 4 km W of Choisy, France | M4.4 | 90 km | 10 km |
| Jun 30, 2010 | 3 km NW of Saint-Martin-de-Belleville, France | M4.3 | 117 km | 2 km |
| Jan 11, 1999 | 2 km W of Saint-Paul-de-Varces, France | M4.2 | 75 km | 10 km |
| May 30, 2001 | 6 km N of Beaufort, France | M4.1 | 125 km | 2 km |
| Jan 11, 2006 | 1 km S of Saint-Rambert-en-Bugey, France | M4.1 | 51 km | 5 km |
| Sep 13, 1999 | 1 km NE of Biol, France | M4.0 | 33 km | 2 km |
| May 25, 2003 | 4 km ESE of Valloire, France | M4.0 | 126 km | 6 km |
| May 15, 1997 | 4 km WNW of Modane, France | M3.9 | 133 km | 5 km |
| Jan 28, 2004 | 2 km ESE of Châbons, France | M3.8 | 40 km | 3 km |
| Feb 3, 1994 | 6 km WSW of Yenne, France | M3.8 | 54 km | 22 km |
| Dec 28, 1992 | 3 km NE of Villebois, France | M3.8 | 47 km | 12 km |
| Sep 4, 1995 | 5 km SE of Gruffy, France | M3.8 | 89 km | 9 km |
| Apr 10, 2005 | 5 km ESE of Saint-Martin-de-Belleville, France | M3.8 | 125 km | 3 km |
| Sep 4, 1995 | 5 km SE of Gruffy, France | M3.8 | 88 km | 11 km |
| Jul 20, 1996 | 1 km NNE of La Balme-de-Sillingy, France | M3.7 | 92 km | 10 km |
| Feb 2, 2002 | 9 km SE of Valloire, France | M3.7 | 130 km | 1 km |
| Feb 28, 2004 | 1 km E of Biol, France | M3.7 | 33 km | 10 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Nearby Volcanoes
1 volcano within 200 km. Closest: Chaine des Puys (159 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Chaine des Puys | Lava dome(s) | 1,464 m (4,803 ft) | -4040 | 159 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 40°F (4°C) | 2.2 in | |
| February | 40°F (5°C) | 2.1 in | Driest |
| March | 46°F (8°C) | 2.3 in | |
| April | 50°F (10°C) | 3.0 in | |
| May | 58°F (15°C) | 3.4 in | |
| June | 64°F (18°C) | 3.1 in | |
| July | 73°F (23°C) | 2.4 in | Warmest |
| August | 69°F (20°C) | 2.6 in | |
| September | 62°F (17°C) | 3.6 in | |
| October | 54°F (12°C) | 3.9 in | Wettest |
| November | 44°F (7°C) | 3.0 in | |
| December | 39°F (4°C) | 2.2 in | Coldest |
Saint-Just-Chaleyssin has a seasonal temperature swing of 34°F / from 39°F in December to 73°F in July. Total annual precipitation is 33.6 inches, with October being the wettest month (3.9") and February the driest (2.1").