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Weather & Climate in Briis-sous-Forges, France
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Briis-sous-Forges experiences four distinct seasons with an average annual temperature of 55°F (13°C). Winters average 42°F in January while summers reach 67°F in July. The area gets 231 sunny days per year, above the national average. Annual precipitation totals 32.8 inches. The area receives 2.1 inches of snow annually. The city sits at an elevation of 331 feet.
Temperature
42°F Jan (5°C)
67°F Jul (20°C)
| Annual Average | 54.6°F |
| 1% above US avg | |
| January Average | 42°F (5°C) |
| July Average | 67°F (20°C) |
| Sunny Days | 231 days/yr |
Geography
| Elevation | 331 ft (101 m) |
| Area | 4.2 sq mi (10.9 km²) |
| Population Density | 809/sq mi |
| Coordinates | 48.6240°N, 2.1211°W |
| Timezone | Europe/Paris |
Precipitation & Snow
Air Quality
Earthquake History
16 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M3.8.
| Jan 25, 1993 | 7 km SSE of Souesmes, France | M3.8 | 137 km | 18 km |
| Mar 6, 1999 | 2 km W of Vienne-en-Val, France | M3.3 | 92 km | 4 km |
| Aug 29, 1992 | 2 km ESE of Radon, France | M3.2 | 146 km | 10 km |
| Oct 25, 1998 | 6 km NNE of Montdidier, France | M3.2 | 125 km | 7 km |
| Feb 22, 1999 | France | M3.1 | 104 km | 4 km |
| Jun 1, 2005 | 3 km N of Grandvilliers, France | M3.1 | 120 km | 10 km |
| Jan 20, 1992 | 9 km NNW of Château-Renault, France | M3.0 | 142 km | 10 km |
| Jun 7, 2008 | 3 km ENE of Cangey, France | M3.0 | 149 km | 3 km |
| Jan 5, 1994 | 0 km SSE of Saint-Martin-de-Boscherville, France | M2.7 | 124 km | 10 km |
| Dec 24, 1997 | 8 km WSW of Savigny-en-Sancerre, France | M2.7 | 143 km | 5 km |
| May 21, 2003 | France | M2.7 | 146 km | 3 km |
| Nov 3, 2000 | 5 km ESE of Ouzouer-le-Marché, France | M2.6 | 91 km | 5 km |
| Jan 26, 2000 | 3 km N of Neuvy-sur-Barangeon, France | M2.6 | 142 km | 12 km |
| Dec 13, 1992 | 1 km SW of La Mailleraye-sur-Seine, France | M2.5 | 137 km | 10 km |
| Jan 12, 1999 | 5 km ESE of Ouzouer-le-Marché, France | M2.5 | 89 km | 18 km |
| Jun 11, 1997 | 4 km NE of Voves, France | M2.5 | 49 km | 10 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 42°F (5°C) | 2.1 in | |
| February | 39°F (4°C) | 1.9 in | Coldest |
| March | 45°F (7°C) | 1.9 in | |
| April | 49°F (9°C) | 2.0 in | |
| May | 56°F (13°C) | 2.4 in | Wettest |
| June | 61°F (16°C) | 2.0 in | |
| July | 67°F (20°C) | 2.2 in | Warmest |
| August | 65°F (19°C) | 1.7 in | Driest |
| September | 59°F (15°C) | 2.1 in | |
| October | 52°F (11°C) | 2.3 in | |
| November | 44°F (7°C) | 2.1 in | |
| December | 40°F (4°C) | 2.2 in |
Briis-sous-Forges has a seasonal temperature swing of 28°F / from 39°F in February to 67°F in July. Total annual precipitation is 24.8 inches, with May being the wettest month (2.4") and August the driest (1.7").