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Weather & Climate in Lagny-sur-Marne, France
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Lagny-sur-Marne 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 226 sunny days per year, above the national average. Annual precipitation totals 39.4 inches. The area receives 1.3 inches of snow annually. The city sits at an elevation of 354 feet.
Temperature
42°F Jan (5°C)
67°F Jul (20°C)
| Annual Average | 54.5°F |
| 1% above US avg | |
| January Average | 42°F (5°C) |
| July Average | 67°F (20°C) |
| Sunny Days | 226 days/yr |
Geography
| Elevation | 354 ft (108 m) |
| Area | 2.2 sq mi (5.7 km²) |
| Population Density | 9,343/sq mi |
| Coordinates | 48.8667°N, 2.7167°W |
| Timezone | Europe/Paris |
Precipitation & Snow
Air Quality
Earthquake History
9 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M3.3.
| Mar 6, 1999 | 2 km W of Vienne-en-Val, France | M3.3 | 127 km | 4 km |
| Oct 25, 1998 | 6 km NNE of Montdidier, France | M3.2 | 93 km | 7 km |
| Jun 1, 2005 | 3 km N of Grandvilliers, France | M3.1 | 108 km | 10 km |
| Jan 5, 1994 | 0 km SSE of Saint-Martin-de-Boscherville, France | M2.7 | 142 km | 10 km |
| May 21, 2003 | France | M2.7 | 141 km | 3 km |
| Nov 3, 2000 | 5 km ESE of Ouzouer-le-Marché, France | M2.6 | 137 km | 5 km |
| Jan 12, 1999 | 5 km ESE of Ouzouer-le-Marché, France | M2.5 | 136 km | 18 km |
| Jun 11, 1997 | 4 km NE of Voves, France | M2.5 | 99 km | 10 km |
| Jun 22, 1999 | 5 km NNE of Oisemont, France | M2.5 | 142 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 | 39°F (4°C) | 1.8 in | Coldest, Driest |
| March | 44°F (7°C) | 1.9 in | |
| April | 49°F (9°C) | 1.9 in | |
| May | 56°F (13°C) | 2.3 in | Wettest |
| June | 61°F (16°C) | 2.3 in | |
| July | 67°F (20°C) | 2.2 in | Warmest |
| August | 65°F (18°C) | 1.9 in | |
| 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 |
Lagny-sur-Marne has a seasonal temperature swing of 28°F / from 39°F in February to 67°F in July. Total annual precipitation is 24.9 inches, with May being the wettest month (2.3") and February the driest (1.8").