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Weather & Climate in Jassans-Riottier, France
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Jassans-Riottier enjoys a temperate climate with an average annual temperature of 56°F (13°C). Winters average 40°F in January while summers reach 72°F in July. The area gets 257 sunny days per year, above the national average. Annual precipitation totals 42.6 inches. The area receives 2.7 inches of snow annually. The city sits at an elevation of 686 feet.
Temperature
40°F Jan (4°C)
72°F Jul (22°C)
| Annual Average | 55.5°F |
| 3% above US avg | |
| January Average | 40°F (4°C) |
| July Average | 72°F (22°C) |
| Sunny Days | 257 days/yr |
Geography
| Elevation | 686 ft (209 m) |
| Area | 1.9 sq mi (4.8 km²) |
| Population Density | 3,139/sq mi |
| Coordinates | 45.9813°N, 4.7614°W |
| Timezone | Europe/Paris |
Precipitation & Snow
Air Quality
Earthquake History
335 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.5.
| Mar 12, 2022 | 3 km S of Faverges, France | M4.5 | 122 km | 3 km |
| Dec 14, 1994 | 7 km SSE of Amancy, France | M4.5 | 123 km | 10 km |
| Jul 15, 1996 | 3 km NE of Chilly, France | M4.5 | 94 km | 5 km |
| Jul 23, 1996 | 4 km W of Choisy, France | M4.4 | 96 km | 10 km |
| May 24, 1995 | 7 km NE of Le Chenit, Switzerland | M4.4 | 140 km | 6 km |
| Jun 30, 2010 | 3 km NW of Saint-Martin-de-Belleville, France | M4.3 | 147 km | 2 km |
| Jan 11, 1999 | 2 km W of Saint-Paul-de-Varces, France | M4.2 | 121 km | 10 km |
| May 30, 2001 | 6 km N of Beaufort, France | M4.1 | 143 km | 2 km |
| Jan 11, 2006 | 1 km S of Saint-Rambert-en-Bugey, France | M4.1 | 53 km | 5 km |
| Sep 13, 1999 | 1 km NE of Biol, France | M4.0 | 73 km | 2 km |
| Dec 28, 1992 | 3 km NE of Villebois, France | M3.8 | 56 km | 12 km |
| Sep 4, 1995 | 5 km SE of Gruffy, France | M3.8 | 108 km | 11 km |
| Jan 28, 2004 | 2 km ESE of Châbons, France | M3.8 | 81 km | 3 km |
| Feb 3, 1994 | 6 km WSW of Yenne, France | M3.8 | 78 km | 22 km |
| Sep 4, 1995 | 5 km SE of Gruffy, France | M3.8 | 108 km | 9 km |
| Feb 28, 2004 | 1 km E of Biol, France | M3.7 | 74 km | 10 km |
| Aug 6, 1995 | 7 km SSW of Vallorbe, Switzerland | M3.7 | 142 km | 10 km |
| Jul 20, 1996 | 1 km NNE of La Balme-de-Sillingy, France | M3.7 | 100 km | 10 km |
| Aug 23, 2003 | 1 km NNW of Saint-Georges-de-Mons, France | M3.7 | 149 km | 10 km |
| Feb 1, 2008 | 8 km ENE of Saint-Gervais-d'Auvergne, France | M3.6 | 142 km | 3 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Nearby Volcanoes
1 volcano within 200 km. Closest: Chaine des Puys (141 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Chaine des Puys | Lava dome(s) | 1,464 m (4,803 ft) | -4040 | 141 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 (4°C) | 2.1 in | Driest |
| March | 46°F (8°C) | 2.1 in | |
| April | 50°F (10°C) | 2.7 in | |
| May | 58°F (15°C) | 3.3 in | |
| June | 64°F (18°C) | 3.2 in | |
| July | 72°F (22°C) | 2.4 in | Warmest |
| August | 68°F (20°C) | 2.7 in | |
| September | 62°F (16°C) | 3.4 in | Wettest |
| October | 53°F (12°C) | 3.4 in | |
| November | 44°F (7°C) | 2.8 in | |
| December | 39°F (4°C) | 2.3 in | Coldest |
Jassans-Riottier has a seasonal temperature swing of 33°F / from 39°F in December to 72°F in July. Total annual precipitation is 32.4 inches, with September being the wettest month (3.4") and February the driest (2.1").