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Weather & Climate in Marsh Lake, YT
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Marsh Lake has a cool climate with an average annual temperature of 30°F (-1°C). Winters average -3°F in January while summers reach 56°F in July. The area gets 318 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 10.1 inches (drier than the 38-inch national average). The area receives 4.1 inches of snow annually. The city sits at an elevation of 2,215 feet.
Temperature
-3°F Jan (-20°C)
56°F Jul (13°C)
| Annual Average | 29.5°F |
| 45% below US avg | |
| January Average | -3°F (-20°C) |
| July Average | 56°F (13°C) |
| Sunny Days | 318 days/yr |
Geography
| Elevation | 2,215 ft (675 m) |
| Area | 315.5 sq mi (817.1 km²) |
| Population Density | 2/sq mi |
| Coordinates | 60.5185°N, 134.3346°W |
| Timezone | America/Whitehorse |
Precipitation & Snow
Air Quality
Earthquake History
132 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.9.
| May 1, 2017 | 38 km NW of Mosquito Lake, Alaska | M4.9 | 150 km | 11 km |
| Apr 4, 1990 | 83 km NW of Whitehorse, Canada | M4.6 | 125 km | 10 km |
| Sep 11, 1999 | 56 km SSE of Haines Junction, Canada | M4.6 | 149 km | 10 km |
| May 1, 2017 | 49 km NW of Mosquito Lake, Alaska | M4.3 | 149 km | 5 km |
| Aug 3, 2000 | 58 km SE of Haines Junction, Canada | M4.3 | 129 km | 10 km |
| May 1, 2017 | 48 km NW of Mosquito Lake, Alaska | M4.1 | 146 km | 10 km |
| Jan 8, 2011 | 14 km SE of Skagway, Alaska | M4.0 | 137 km | 4 km |
| Jun 22, 2017 | 38 km NW of Mosquito Lake, Alaska | M4.0 | 148 km | 3 km |
| Dec 10, 1990 | 23 km NW of Mosquito Lake, Alaska | M4.0 | 147 km | 10 km |
| May 5, 2017 | 42 km NW of Mosquito Lake, Alaska | M3.9 | 150 km | 4 km |
| May 1, 2017 | 49 km NW of Mosquito Lake, Alaska | M3.9 | 149 km | 4 km |
| May 1, 2017 | 46 km NW of Mosquito Lake, Alaska | M3.8 | 150 km | 7 km |
| Jan 20, 2020 | 37 km NW of Mosquito Lake, Alaska | M3.7 | 150 km | 10 km |
| May 1, 2017 | 53 km NW of Mosquito Lake, Alaska | M3.7 | 147 km | 10 km |
| May 1, 2017 | 42 km NW of Mosquito Lake, Alaska | M3.7 | 147 km | 10 km |
| May 5, 2017 | 46 km NW of Mosquito Lake, Alaska | M3.6 | 150 km | 10 km |
| Jun 13, 2016 | 86 km SE of Whitehorse, Canada | M3.6 | 49 km | 20 km |
| May 6, 2017 | 52 km NW of Mosquito Lake, Alaska | M3.6 | 150 km | 4 km |
| May 1, 2017 | 47 km NW of Mosquito Lake, Alaska | M3.6 | 148 km | 2 km |
| Apr 27, 1998 | 92 km NE of Whitehorse, Canada | M3.6 | 87 km | 33 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tsunami History
3 tsunamis recorded within 500 km. Highest wave on record: 9.0 m (30 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1994 | SKAGWAY, AK | Meteorological | 9.0 m | 1 | 125 km |
| 2024 | WHITEHORSE, YUKON | Meteorological | 2.5 m | — | 70 km |
| 1907 | SKAGWAY, AK | Eruption + Earthquake | 0.7 m | — | 131 km |
Source: NOAA/NCEI Historical Tsunami Database.
Nearby Volcanoes
2 volcanoes within 200 km. Closest: Alligator Lake (61 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Alligator Lake | Volcanic field | 2,217 m (7,274 ft) | Unknown | 61 km |
| Atlin Volcanic Field | Pyroclastic cone(s) | 1,880 m (6,168 ft) | Unknown | 109 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | -3°F (-20°C) | 0.8 in | Coldest |
| February | 5°F (-15°C) | 0.6 in | |
| March | 18°F (-8°C) | 0.4 in | |
| April | 31°F (-0°C) | 0.2 in | Driest |
| May | 43°F (6°C) | 0.6 in | |
| June | 52°F (11°C) | 1.1 in | |
| July | 56°F (13°C) | 1.5 in | Warmest, Wettest |
| August | 54°F (12°C) | 1.4 in | |
| September | 45°F (7°C) | 1.3 in | |
| October | 34°F (1°C) | 0.8 in | |
| November | 16°F (-9°C) | 0.8 in | |
| December | 4°F (-16°C) | 0.7 in |
Marsh Lake has a seasonal temperature swing of 60°F / from -3°F in January to 56°F in July. Total annual precipitation is 10.1 inches, with July being the wettest month (1.5") and April the driest (0.2").