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Weather & Climate in Järna, Sweden
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Järna has a cool climate with an average annual temperature of 39°F (4°C). Winters average 20°F in January while summers reach 60°F in July. The area gets 290 sunny days per year, well above the U.S. average of 205 / making it one of the sunnier locations in the country. Annual precipitation totals 25.3 inches (drier than the 38-inch national average). The area receives 7.5 inches of snow annually. The city sits at an elevation of 768 feet.
Temperature
20°F Jan (-7°C)
60°F Jul (15°C)
| Annual Average | 38.6°F |
| 29% below US avg | |
| January Average | 20°F (-7°C) |
| July Average | 60°F (15°C) |
| Sunny Days | 290 days/yr |
Geography
| Elevation | 768 ft (234 m) |
| Area | 1.4 sq mi (3.6 km²) |
| Population Density | 1,250/sq mi |
| Coordinates | 60.5333°N, 14.3667°W |
| Timezone | Europe/Stockholm |
Precipitation & Snow
Air Quality
Earthquake History
2 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M3.7.
| Apr 11, 1993 | 2 km NNE of Ludvika, Sweden | M3.7 | 62 km | 10 km |
| Nov 12, 1993 | 2 km SE of Åmotfors, Sweden | M3.4 | 140 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: 5.0 m (16 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1969 | NORSALV RIVER | Meteorological | 5.0 m | — | 135 km |
Source: NOAA/NCEI Historical Tsunami Database.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 20°F (-7°C) | 1.4 in | Coldest |
| February | 20°F (-7°C) | 1.0 in | Driest |
| March | 28°F (-2°C) | 1.3 in | |
| April | 37°F (3°C) | 1.8 in | |
| May | 48°F (9°C) | 1.9 in | |
| June | 56°F (13°C) | 2.8 in | |
| July | 60°F (15°C) | 3.4 in | Warmest, Wettest |
| August | 57°F (14°C) | 3.2 in | |
| September | 48°F (9°C) | 2.6 in | |
| October | 39°F (4°C) | 2.3 in | |
| November | 30°F (-1°C) | 2.1 in | |
| December | 22°F (-6°C) | 1.6 in |
Järna has a seasonal temperature swing of 40°F / from 20°F in January to 60°F in July. Total annual precipitation is 25.3 inches, with July being the wettest month (3.4") and February the driest (1.0").