Weather & Climate in Mont-Saint-Aignan, France
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Mont-Saint-Aignan experiences four distinct seasons with an average annual temperature of 54°F (12°C). Winters average 42°F in January while summers reach 64°F in July. Annual precipitation totals 37.0 inches. The area receives 1.4 inches of snow annually. The city sits at an elevation of 420 feet.
Temperature
42°F Jan (6°C)
64°F Jul (18°C)
| Annual Average | 53.6°F |
| 1% below US avg | |
| January Average | 42°F (6°C) |
| July Average | 64°F (18°C) |
Geography
| Elevation | 420 ft (128 m) |
| Area | 3.1 sq mi (8.0 km²) |
| Population Density | 6,568/sq mi |
| Coordinates | 49.4631°N, 1.0936°E |
| Timezone | Europe/Paris |
Precipitation & Snow
Air Quality
Earthquake History
36 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.6.
| Oct 6, 1999 | 34 km NNW of Fécamp, France | M4.6 | 89 km | 1 km |
| Nov 30, 1994 | 17 km N of Courseulles-sur-Mer, France | M4.1 | 111 km | 6 km |
| Dec 14, 1991 | 3 km SSE of Longfossé, France | M4.0 | 140 km | 10 km |
| Jan 27, 1998 | 27 km W of Le Touquet-Paris-Plage, France | M3.8 | 116 km | 2 km |
| Nov 2, 1997 | 7 km NW of Villers-sur-Mer, France | M3.7 | 85 km | 10 km |
| Sep 23, 2003 | 41 km WNW of Étretat, France | M3.6 | 111 km | 10 km |
| Jan 27, 1992 | 6 km SSE of Longfossé, France | M3.5 | 138 km | 10 km |
| Aug 8, 1998 | 1 km SE of Cairon, France | M3.5 | 114 km | 10 km |
| Aug 1, 2007 | 2 km SSE of Blonville-sur-Mer, France | M3.5 | 78 km | 5 km |
| Sep 24, 2003 | 22 km WNW of Cauville-sur-Mer, France | M3.5 | 93 km | 17 km |
| Jun 16, 1998 | 18 km NNW of Yport, France | M3.3 | 80 km | 5 km |
| Aug 29, 1992 | 2 km ESE of Radon, France | M3.2 | 128 km | 10 km |
| Oct 19, 2002 | 9 km NW of Trouville-sur-Mer, France | M3.2 | 79 km | 10 km |
| Feb 13, 1997 | 26 km W of Le Touquet-Paris-Plage, France | M3.2 | 118 km | 5 km |
| Oct 25, 1998 | 6 km NNE of Montdidier, France | M3.2 | 112 km | 7 km |
| Feb 22, 1999 | France | M3.1 | 131 km | 4 km |
| Jun 1, 2005 | 3 km N of Grandvilliers, France | M3.1 | 67 km | 10 km |
| Aug 26, 2002 | 40 km NNW of Étretat, France | M3.0 | 103 km | 4 km |
| May 1, 1997 | 21 km W of Fort-Mahon-Plage, France | M3.0 | 97 km | 5 km |
| Nov 12, 1992 | 5 km NW of Cabourg, France | M2.8 | 92 km | 10 km |
Source: USGS Earthquake Catalog (M2.5+, 1990-2025). Sorted by magnitude.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 42°F (6°C) | 2.6 in | |
| February | 41°F (5°C) | 2.2 in | Coldest |
| March | 45°F (7°C) | 2.1 in | |
| April | 49°F (9°C) | 1.9 in | |
| May | 55°F (13°C) | 2.4 in | |
| June | 60°F (16°C) | 2.2 in | |
| July | 64°F (18°C) | 1.9 in | |
| August | 64°F (18°C) | 1.9 in | Warmest, Driest |
| September | 59°F (15°C) | 2.5 in | |
| October | 53°F (12°C) | 2.8 in | |
| November | 46°F (8°C) | 3.0 in | |
| December | 42°F (5°C) | 3.0 in | Wettest |
Mont-Saint-Aignan has a seasonal temperature swing of 23°F / from 41°F in February to 64°F in August. Total annual precipitation is 28.5 inches, with December being the wettest month (3.0") and August the driest (1.9").