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Weather & Climate in Illiat, France
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Illiat 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 722 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 | 722 ft (220 m) |
| Area | 0.8 sq mi (1.9 km²) |
| Population Density | 675/sq mi |
| Coordinates | 46.1890°N, 4.8844°W |
| Timezone | Europe/Paris |
Precipitation & Snow
Air Quality
Earthquake History
298 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.5.
| 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 | 120 km | 3 km |
| Jul 15, 1996 | 3 km NE of Chilly, France | M4.5 | 86 km | 5 km |
| Jul 23, 1996 | 4 km W of Choisy, France | M4.4 | 89 km | 10 km |
| May 24, 1995 | 7 km NE of Le Chenit, Switzerland | M4.4 | 121 km | 6 km |
| Jan 11, 1999 | 2 km W of Saint-Paul-de-Varces, France | M4.2 | 136 km | 10 km |
| May 30, 2001 | 6 km N of Beaufort, France | M4.1 | 139 km | 2 km |
| Jan 11, 2006 | 1 km S of Saint-Rambert-en-Bugey, France | M4.1 | 52 km | 5 km |
| Sep 13, 1999 | 1 km NE of Biol, France | M4.0 | 86 km | 2 km |
| Feb 14, 1990 | 4 km SE of Saint-Paul-en-Chablais, France | M4.0 | 138 km | 10 km |
| Feb 24, 2003 | 9 km NNE of Levier, France | M3.9 | 136 km | 2 km |
| Feb 3, 1994 | 6 km WSW of Yenne, France | M3.8 | 83 km | 22 km |
| Sep 4, 1995 | 5 km SE of Gruffy, France | M3.8 | 107 km | 11 km |
| Dec 28, 1992 | 3 km NE of Villebois, France | M3.8 | 57 km | 12 km |
| Sep 4, 1995 | 5 km SE of Gruffy, France | M3.8 | 107 km | 9 km |
| Jan 28, 2004 | 2 km ESE of Châbons, France | M3.8 | 95 km | 3 km |
| Sep 14, 1996 | 5 km SE of Morzine, France | M3.7 | 144 km | 5 km |
| Aug 6, 1995 | 7 km SSW of Vallorbe, Switzerland | M3.7 | 123 km | 10 km |
| Feb 28, 2004 | 1 km E of Biol, France | M3.7 | 87 km | 10 km |
| Jul 20, 1996 | 1 km NNE of La Balme-de-Sillingy, France | M3.7 | 93 km | 10 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 | — | — | 150 km |
Source: NOAA/NCEI Historical Tsunami Database.
Nearby Volcanoes
1 volcano within 200 km. Closest: Chaine des Puys (155 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Chaine des Puys | Lava dome(s) | 1,464 m (4,803 ft) | -4040 | 155 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 40°F (4°C) | 2.5 in | |
| February | 39°F (4°C) | 2.4 in | |
| March | 45°F (7°C) | 2.2 in | Driest |
| April | 50°F (10°C) | 2.8 in | |
| May | 58°F (15°C) | 3.4 in | |
| June | 64°F (18°C) | 3.1 in | |
| July | 72°F (22°C) | 2.5 in | Warmest |
| August | 68°F (20°C) | 2.6 in | |
| September | 61°F (16°C) | 3.5 in | Wettest |
| October | 53°F (12°C) | 3.4 in | |
| November | 43°F (6°C) | 3.1 in | |
| December | 38°F (4°C) | 2.7 in | Coldest |
Illiat has a seasonal temperature swing of 34°F / from 38°F in December to 72°F in July. Total annual precipitation is 34.1 inches, with September being the wettest month (3.5") and March the driest (2.2").