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Weather & Climate in Saint-Glen, France
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Saint-Glen experiences four distinct seasons with an average annual temperature of 55°F (13°C). Winters average 45°F in January while summers reach 64°F in July / relatively mild seasonal variation. The area gets 239 sunny days per year, above the national average. Annual precipitation totals 34.8 inches. The area receives 1.9 inches of snow annually. The city sits at an elevation of 489 feet.
Temperature
45°F Jan (7°C)
64°F Jul (18°C)
| Annual Average | 54.8°F |
| 1% above US avg | |
| January Average | 45°F (7°C) |
| July Average | 64°F (18°C) |
| Sunny Days | 239 days/yr |
Geography
| Elevation | 489 ft (149 m) |
| Area | 9.6 sq mi (24.9 km²) |
| Population Density | 56/sq mi |
| Coordinates | 48.3587°N, 2.5238°W |
| Timezone | Europe/Paris |
Precipitation & Snow
Air Quality
Earthquake History
234 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.6.
| Mar 13, 1993 | 1 km WSW of Pénestin, France | M4.6 | 98 km | 10 km |
| Nov 21, 2013 | 1 km WSW of Plescop, France | M4.5 | 77 km | 4 km |
| Apr 30, 1990 | 5 km SE of Saint Helier, Jersey | M4.2 | 95 km | 22 km |
| Sep 30, 2002 | 3 km W of Languidic, France | M4.2 | 78 km | 10 km |
| Sep 30, 2002 | 1 km E of Languidic, France | M4.1 | 74 km | 4 km |
| Oct 11, 1995 | 1 km SSE of Querrien, France | M3.9 | 87 km | 10 km |
| Jul 11, 2014 | 23 km W of Saint Helier, Jersey | M3.9 | 88 km | 12 km |
| Mar 28, 2002 | 36 km WSW of Le Palais, France | M3.8 | 148 km | 15 km |
| Apr 23, 2002 | 1 km ESE of Melgven, France | M3.8 | 108 km | 6 km |
| Apr 7, 2005 | 18 km WNW of Noirmoutier-en-l'Île, France | M3.8 | 145 km | 0 km |
| Jul 18, 2004 | 6 km WSW of Groix, France | M3.8 | 112 km | 16 km |
| Jul 11, 2002 | 3 km NW of Pluduno, France | M3.8 | 27 km | 10 km |
| Jun 24, 1995 | 1 km SE of Andouillé, France | M3.7 | 132 km | 5 km |
| Feb 25, 2015 | 30 km SW of Saint Helier, Jersey | M3.7 | 72 km | 2 km |
| Feb 19, 2020 | 3 km ESE of Brest, France | M3.7 | 142 km | 10 km |
| Sep 28, 2017 | 1 km WNW of Tresbœuf, France | M3.6 | 89 km | 2 km |
| Aug 22, 1998 | 38 km SSE of Plobannalec-Lesconil, France | M3.6 | 146 km | 19 km |
| Dec 11, 2013 | 6 km WSW of Le Faou, France | M3.5 | 128 km | 2 km |
| May 3, 1999 | 1 km SE of Gouesnach, France | M3.5 | 128 km | 15 km |
| Apr 22, 1995 | 6 km E of Binic, France | M3.5 | 32 km | 10 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 45°F (7°C) | 3.9 in | |
| February | 43°F (6°C) | 3.1 in | Coldest |
| March | 47°F (8°C) | 2.9 in | |
| April | 49°F (9°C) | 2.4 in | |
| May | 55°F (13°C) | 2.5 in | |
| June | 59°F (15°C) | 2.0 in | |
| July | 64°F (18°C) | 1.8 in | Warmest, Driest |
| August | 64°F (18°C) | 2.0 in | |
| September | 60°F (16°C) | 2.7 in | |
| October | 55°F (13°C) | 3.5 in | |
| November | 48°F (9°C) | 4.1 in | Wettest |
| December | 44°F (7°C) | 3.9 in |
Saint-Glen has a seasonal temperature swing of 21°F / from 43°F in February to 64°F in July. Total annual precipitation is 34.8 inches, with November being the wettest month (4.1") and July the driest (1.8").