Weather & Climate in Les Ulis, France
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Les Ulis 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. Annual precipitation totals 32.8 inches. The area receives 2.1 inches of snow annually. The city sits at an elevation of 285 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) |
Geography
| Elevation | 285 ft (87 m) |
| Area | 2.0 sq mi (5.2 km²) |
| Population Density | 12,943/sq mi |
| Coordinates | 48.6817°N, 2.1694°E |
| Timezone | Europe/Paris |
Precipitation & Snow
Air Quality
Earthquake History
15 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 | 143 km | 18 km |
| Mar 6, 1999 | 2 km W of Vienne-en-Val, France | M3.3 | 98 km | 4 km |
| Oct 25, 1998 | 6 km NNE of Montdidier, France | M3.2 | 118 km | 7 km |
| Feb 22, 1999 | France | M3.1 | 110 km | 4 km |
| Jun 1, 2005 | 3 km N of Grandvilliers, France | M3.1 | 114 km | 10 km |
| Jan 20, 1992 | 9 km NNW of Château-Renault, France | M3.0 | 150 km | 10 km |
| Jan 5, 1994 | 0 km SSE of Saint-Martin-de-Boscherville, France | M2.7 | 121 km | 10 km |
| Dec 24, 1997 | 8 km WSW of Savigny-en-Sancerre, France | M2.7 | 148 km | 5 km |
| May 21, 2003 | France | M2.7 | 148 km | 3 km |
| Nov 3, 2000 | 5 km ESE of Ouzouer-le-Marché, France | M2.6 | 98 km | 5 km |
| Jan 26, 2000 | 3 km N of Neuvy-sur-Barangeon, France | M2.6 | 149 km | 12 km |
| Dec 13, 1992 | 1 km SW of La Mailleraye-sur-Seine, France | M2.5 | 135 km | 10 km |
| Jan 12, 1999 | 5 km ESE of Ouzouer-le-Marché, France | M2.5 | 97 km | 18 km |
| Jun 11, 1997 | 4 km NE of Voves, France | M2.5 | 56 km | 10 km |
| Jun 22, 1999 | 5 km NNE of Oisemont, France | M2.5 | 149 km | 2 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 | 40°F (4°C) | 1.9 in | Coldest |
| March | 45°F (7°C) | 1.9 in | |
| April | 50°F (10°C) | 2.1 in | |
| May | 57°F (14°C) | 2.5 in | Wettest |
| June | 62°F (17°C) | 2.1 in | |
| July | 67°F (20°C) | 2.3 in | Warmest |
| August | 67°F (19°C) | 1.7 in | Driest |
| September | 60°F (16°C) | 2.1 in | |
| October | 53°F (12°C) | 2.3 in | |
| November | 45°F (7°C) | 2.1 in | |
| December | 41°F (5°C) | 2.3 in |
Les Ulis has a seasonal temperature swing of 27°F / from 40°F in February to 67°F in July. Total annual precipitation is 25.3 inches, with May being the wettest month (2.5") and August the driest (1.7").