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Weather & Climate in Saint-Symphorien-de-Lay, France
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Saint-Symphorien-de-Lay experiences four distinct seasons with an average annual temperature of 54°F (12°C). Winters average 39°F in January while summers reach 69°F in July. The area gets 255 sunny days per year, above the national average. Annual precipitation totals 34.3 inches. The area receives 6.3 inches of snow annually. The city sits at an elevation of 1,460 feet.
Temperature
39°F Jan (4°C)
69°F Jul (21°C)
| Annual Average | 54.2°F |
| 0% below US avg | |
| January Average | 39°F (4°C) |
| July Average | 69°F (21°C) |
| Sunny Days | 255 days/yr |
Geography
| Elevation | 1,460 ft (445 m) |
| Area | 5.0 sq mi (12.8 km²) |
| Population Density | 292/sq mi |
| Coordinates | 45.9477°N, 4.2132°W |
| Timezone | Europe/Paris |
Precipitation & Snow
Air Quality
Earthquake History
333 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 | 137 km | 5 km |
| Jul 23, 1996 | 4 km W of Choisy, France | M4.4 | 139 km | 10 km |
| Jan 11, 1999 | 2 km W of Saint-Paul-de-Varces, France | M4.2 | 146 km | 10 km |
| May 9, 2022 | 5 km SW of Villebret, France | M4.2 | 129 km | 11 km |
| Jan 11, 2006 | 1 km S of Saint-Rambert-en-Bugey, France | M4.1 | 95 km | 5 km |
| Sep 13, 1999 | 1 km NE of Biol, France | M4.0 | 105 km | 2 km |
| Jan 28, 2004 | 2 km ESE of Châbons, France | M3.8 | 112 km | 3 km |
| Sep 4, 1995 | 5 km SE of Gruffy, France | M3.8 | 149 km | 9 km |
| Dec 28, 1992 | 3 km NE of Villebois, France | M3.8 | 97 km | 12 km |
| Feb 3, 1994 | 6 km WSW of Yenne, France | M3.8 | 117 km | 22 km |
| Aug 19, 2003 | 5 km NNW of Saint-Georges-de-Mons, France | M3.8 | 109 km | 5 km |
| Sep 4, 1995 | 5 km SE of Gruffy, France | M3.8 | 149 km | 11 km |
| Feb 28, 2004 | 1 km E of Biol, France | M3.7 | 105 km | 10 km |
| Aug 23, 2003 | 1 km NNW of Saint-Georges-de-Mons, France | M3.7 | 107 km | 10 km |
| Jul 20, 1996 | 1 km NNE of La Balme-de-Sillingy, France | M3.7 | 142 km | 10 km |
| Feb 1, 2008 | 8 km ENE of Saint-Gervais-d'Auvergne, France | M3.6 | 100 km | 3 km |
| Aug 6, 1997 | 5 km NNE of Bletterans, France | M3.6 | 135 km | 10 km |
| Sep 8, 1995 | 1 km NW of Crolles, France | M3.5 | 148 km | 5 km |
| Jun 27, 1991 | 7 km WNW of Saint-Flour, France | M3.5 | 138 km | 10 km |
| Feb 21, 1993 | 9 km NNE of Beaurepaire, France | M3.5 | 90 km | 9 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Nearby Volcanoes
1 volcano within 200 km. Closest: Chaine des Puys (98 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Chaine des Puys | Lava dome(s) | 1,464 m (4,803 ft) | -4040 | 98 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 39°F (4°C) | 2.1 in | |
| February | 38°F (3°C) | 1.8 in | Driest |
| March | 43°F (6°C) | 2.0 in | |
| April | 47°F (8°C) | 2.3 in | |
| May | 55°F (13°C) | 3.1 in | |
| June | 61°F (16°C) | 3.5 in | Wettest |
| July | 69°F (21°C) | 2.7 in | Warmest |
| August | 66°F (19°C) | 3.2 in | |
| September | 59°F (15°C) | 3.4 in | |
| October | 52°F (11°C) | 2.7 in | |
| November | 42°F (6°C) | 2.6 in | |
| December | 38°F (3°C) | 2.1 in | Coldest |
Saint-Symphorien-de-Lay has a seasonal temperature swing of 31°F / from 38°F in December to 69°F in July. Total annual precipitation is 31.6 inches, with June being the wettest month (3.5") and February the driest (1.8").