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Weather & Climate in Heimiswil, Switzerland
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Heimiswil experiences four distinct seasons with an average annual temperature of 49°F (10°C). Winters average 32°F in January while summers reach 66°F in July. The area gets 267 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 53.7 inches (wetter than the 38-inch national average). The area receives 26.1 inches of snow annually, a moderate snowfall amount. The city sits at an elevation of 2,100 feet.
Temperature
32°F Jan (0°C)
66°F Jul (19°C)
| Annual Average | 49.3°F |
| 9% below US avg | |
| January Average | 32°F (0°C) |
| July Average | 66°F (19°C) |
| Sunny Days | 267 days/yr |
Geography
| Elevation | 2,100 ft (640 m) |
| Area | 6.0 sq mi (15.6 km²) |
| Population Density | 261/sq mi |
| Coordinates | 47.0676°N, 7.6667°W |
| Timezone | Europe/Zurich |
Precipitation & Snow
Air Quality
Earthquake History
863 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.7.
| Feb 14, 1999 | 3 km NNE of Belfaux, Switzerland | M4.7 | 47 km | 10 km |
| Nov 20, 1991 | 1 km WSW of Churwalden, Switzerland | M4.7 | 144 km | 10 km |
| Jan 4, 2009 | 3 km S of Wildhaus, Switzerland | M4.5 | 129 km | 3 km |
| Aug 28, 1994 | 6 km SSW of Muotathal, Switzerland | M4.5 | 83 km | 8 km |
| Feb 17, 1992 | 4 km NNE of Scharans, Switzerland | M4.5 | 142 km | 10 km |
| May 24, 1995 | 7 km NE of Le Chenit, Switzerland | M4.4 | 113 km | 6 km |
| Jun 14, 1993 | 3 km S of Vogogna, Italy | M4.4 | 130 km | 10 km |
| May 8, 1992 | 2 km WSW of Sennwald, Switzerland | M4.4 | 138 km | 5 km |
| May 8, 1992 | 0 km NNW of Sennwald, Switzerland | M4.4 | 140 km | 5 km |
| Mar 22, 2023 | 1 km NW of Pont-de-Roide, France | M4.4 | 78 km | 12 km |
| Feb 23, 2004 | 5 km SSE of Roulans, France | M4.4 | 108 km | 17 km |
| May 15, 1992 | 1 km W of Sennwald, Switzerland | M4.4 | 139 km | 5 km |
| Nov 22, 1997 | 4 km SSW of Krummenau, Switzerland | M4.4 | 114 km | 10 km |
| Nov 16, 1995 | 1 km ENE of Einsiedeln, Switzerland | M4.3 | 83 km | 5 km |
| Apr 29, 2003 | 2 km SSW of Varen, Switzerland | M4.3 | 86 km | 8 km |
| Mar 31, 1996 | 7 km NNW of Bionaz, Italy | M4.3 | 128 km | 5 km |
| May 6, 2003 | 7 km WSW of Linthal, Switzerland | M4.3 | 95 km | 6 km |
| May 20, 1999 | 4 km SSE of Plaffeien, Switzerland | M4.2 | 50 km | 2 km |
| Aug 24, 1996 | 1 km E of Sirnach, Switzerland | M4.2 | 111 km | 20 km |
| Aug 22, 2003 | 6 km NNW of Savièse, Switzerland | M4.2 | 90 km | 4 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tsunami History
3 tsunamis recorded within 500 km. Highest wave on record: 4.0 m (13 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1601 | LAKE LUCERNE | Eruption + Earthquake | 4.0 m | 8 | 70 km |
| 1996 | LAKE BRIENZ | Meteorological | 0.5 m | — | 44 km |
| 563 | LAKE GENEVA | Meteorological | — | — | 102 km |
Source: NOAA/NCEI Historical Tsunami Database.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 32°F (0°C) | 2.7 in | Coldest, Driest |
| February | 35°F (2°C) | 2.7 in | |
| March | 41°F (5°C) | 2.7 in | |
| April | 46°F (8°C) | 3.4 in | |
| May | 55°F (13°C) | 4.3 in | |
| June | 60°F (15°C) | 4.9 in | Wettest |
| July | 66°F (19°C) | 4.3 in | Warmest |
| August | 64°F (18°C) | 4.2 in | |
| September | 57°F (14°C) | 3.5 in | |
| October | 49°F (9°C) | 3.4 in | |
| November | 39°F (4°C) | 3.6 in | |
| December | 34°F (1°C) | 3.1 in |
Heimiswil has a seasonal temperature swing of 33°F / from 32°F in January to 66°F in July. Total annual precipitation is 42.9 inches, with June being the wettest month (4.9") and January the driest (2.7").