Saint-Jean-de-Moirans, France

Full City Profile

3.6 /5.0

B+ Good

2,901 Population 343/sq mi density

830 ft Elevation 253 meters

54°F Avg Temperature 12°C

B+

Overall

3.6 / 5.0

Good overall score based on economy, affordability, safety and education

C+

Economy

2.8 / 5.0

$29,182 median income, 6.4% unemployment

Affordability

4.4 / 5.0

$120,000 home value, $600/mo rent

Saint-Jean-de-Moirans experiences four distinct seasons with an average annual temperature of 54°F (12°C). Winters average 38°F in January while summers reach 71°F in July. The area gets 269 sunny days per year. Annual precipitation totals 45.4 inches. The area receives 7.8 inches of snow annually.

Temperature

38°F Jan (3°C) 71°F Jul (22°C)

Annual Average	54.1°F
	0% below US avg
January Average	38°F (3°C)
July Average	71°F (22°C)
Sunny Days	269 days/yr

Geography

Elevation	830 ft (253 m)
Area	8.5 sq mi (21.9 km²)
Population Density	343/sq mi
Coordinates	45.3451°N, 5.5854°W
Timezone	Europe/Paris

Precipitation & Snow

Annual Rainfall 45.4"

19% above US avg

Snowfall 7.8"

Wettest Month (Sep) 4.37"

Driest Month (Jul) 2.80"

Air Quality

Earthquake History

1,111 earthquakes (M2.5+) within 150 km since 1990. Strongest: M4.8. Most recent: M3.3 on May 6, 2025.

Oct 31, 1997	12 km SE of Seyne-les-Alpes, France	M4.8	138 km
Apr 7, 2014	7 km SE of Guillestre, France	M4.8	121 km
Feb 11, 1991	5 km ESE of Briançon, France	M4.6	102 km
Dec 14, 1994	7 km SSE of Amancy, France	M4.5	95 km
Mar 12, 2022	3 km S of Faverges, France	M4.5	69 km
Mar 2, 2012	8 km NNW of Jausiers, France	M4.5	130 km
Jul 15, 1996	3 km NE of Chilly, France	M4.5	81 km
Jul 25, 2011	5 km NW of Cantalupa, Italy	M4.4	139 km
Jul 23, 1996	4 km W of Choisy, France	M4.4	80 km
Jun 30, 2010	3 km NW of Saint-Martin-de-Belleville, France	M4.3	70 km
Aug 3, 2011	4 km ESE of Barjac, France	M4.3	149 km
May 14, 2004	0 km SSE of Chiusa di San Michele, Italy	M4.2	139 km
Jul 30, 2016	0 km SSW of Fleccia-Chianavasso, Italy	M4.2	135 km
Feb 26, 2012	13 km ESE of Embrun, France	M4.2	123 km
Jan 11, 1999	2 km W of Saint-Paul-de-Varces, France	M4.2	30 km
Feb 27, 2012	8 km NNW of Jausiers, France	M4.1	129 km
Apr 11, 1998	1 km SW of Oncino, Italy	M4.1	146 km
Feb 18, 1996	13 km ESE of Saint-Martin-de-Queyrières, France	M4.1	111 km
Jan 11, 2006	1 km S of Saint-Rambert-en-Bugey, France	M4.1	66 km
Jul 14, 2014	8 km NNW of Jausiers, France	M4.1	129 km

Source: USGS (M2.5+, 1990–2025)

Tsunami History

1 tsunami recorded within 500 km.

Year	Location	Cause	Max Wave	Deaths	Distance
563	LAKE GENEVA	Meteorological	—	—	148 km

Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.

Monthly Weather

Month	Avg Temperature	Precipitation	Summary
January	38°F (3°C)	3.1 in
February	37°F (3°C)	3.1 in
March	43°F (6°C)	3.4 in
April	48°F (9°C)	3.5 in
May	56°F (14°C)	4.1 in
June	62°F (17°C)	3.8 in
July	71°F (22°C)	2.8 in	Warmest, Driest
August	67°F (19°C)	3.0 in
September	60°F (15°C)	4.4 in	Wettest
October	52°F (11°C)	4.4 in
November	42°F (5°C)	4.1 in
December	37°F (3°C)	3.4 in	Coldest

Saint-Jean-de-Moirans has a seasonal temperature swing of 34°F / from 37°F in December to 71°F in July. Total annual precipitation is 42.9 inches, with September being the wettest month (4.4") and July the driest (2.8").

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