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Weather & Climate in Mjøndalen, Norway
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Mjøndalen has a cool climate with an average annual temperature of 42°F (6°C). Winters average 24°F in January while summers reach 62°F in July. The area gets 200 sunny days per year. Annual precipitation totals 47.3 inches (wetter than the 38-inch national average). The area receives 123.6 inches of snow annually, making winter weather a significant factor for residents. The city sits at an elevation of 23 feet.
Temperature
24°F Jan (-4°C)
62°F Jul (16°C)
| Annual Average | 41.9°F |
| 22% below US avg | |
| January Average | 24°F (-4°C) |
| July Average | 62°F (16°C) |
| Sunny Days | 200 days/yr |
Geography
| Elevation | 23 ft (7 m) |
| Area | 160.5 sq mi (415.6 km²) |
| Population Density | 0/sq mi |
| Coordinates | 59.7508°N, 10.0248°W |
| Timezone | Europe/Oslo |
Precipitation & Snow
Air Quality
Earthquake History
18 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M3.8.
| Feb 19, 1992 | 5 km SE of Fredrikstad, Norway | M3.8 | 84 km | 10 km |
| Nov 19, 1994 | 0 km WNW of Jessheim, Norway | M3.5 | 77 km | 10 km |
| Nov 12, 1993 | 2 km SE of Åmotfors, Sweden | M3.4 | 133 km | 10 km |
| Apr 7, 2004 | 11 km N of Sand, Norway | M3.4 | 117 km | 23 km |
| Nov 29, 2000 | 9 km E of Strömstad, Sweden | M3.4 | 117 km | 10 km |
| Jun 29, 2004 | 17 km E of Hovden, Norway | M3.1 | 134 km | 8 km |
| Nov 27, 1993 | 4 km SW of Sand, Norway | M3.1 | 106 km | 10 km |
| Sep 28, 1993 | 44 km WSW of Grebbestad, Sweden | M2.9 | 133 km | 10 km |
| May 25, 2008 | 4 km WSW of Åneby, Norway | M2.9 | 57 km | 15 km |
| Aug 1, 1994 | 30 km N of Noresund, Norway | M2.7 | 81 km | 5 km |
| Nov 21, 1994 | 6 km NNW of Jessheim, Norway | M2.7 | 79 km | 10 km |
| Nov 19, 1994 | 7 km NW of Jessheim, Norway | M2.7 | 76 km | 10 km |
| Aug 22, 1994 | 21 km S of Reinsvoll, Norway | M2.7 | 89 km | 10 km |
| Aug 15, 1991 | 7 km ESE of Stavern, Norway | M2.7 | 86 km | 10 km |
| Dec 12, 1994 | 8 km S of Rotnes, Norway | M2.6 | 53 km | 5 km |
| Feb 1, 1991 | 5 km SSE of Melsomvik, Norway | M2.6 | 67 km | 10 km |
| Jan 29, 2005 | 7 km NNE of Hvittingfoss, Norway | M2.6 | 24 km | 15 km |
| May 23, 1990 | 50 km WNW of Smögen, Sweden | M2.5 | 136 km | 10 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tsunami History
1 tsunami recorded within 500 km. Highest wave on record: 6.0 m (20 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1966 | EASTERN NORWAY | Meteorological | 6.0 m | — | 38 km |
Source: NOAA/NCEI Historical Tsunami Database.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 24°F (-4°C) | 2.2 in | Coldest |
| February | 25°F (-4°C) | 1.5 in | Driest |
| March | 32°F (-0°C) | 2.3 in | |
| April | 40°F (4°C) | 1.8 in | |
| May | 51°F (11°C) | 2.1 in | |
| June | 58°F (14°C) | 2.9 in | |
| July | 62°F (16°C) | 3.2 in | Warmest |
| August | 59°F (15°C) | 3.3 in | |
| September | 51°F (11°C) | 3.6 in | |
| October | 42°F (6°C) | 4.0 in | Wettest |
| November | 33°F (0°C) | 3.5 in | |
| December | 26°F (-3°C) | 2.3 in |
Mjøndalen has a seasonal temperature swing of 37°F / from 24°F in January to 62°F in July. Total annual precipitation is 32.7 inches, with October being the wettest month (4.0") and February the driest (1.5").