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Weather & Climate in Stewart, BC
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Stewart has a cool climate with an average annual temperature of 35°F (2°C). Winters average 20°F in January while summers reach 50°F in July. The area gets 207 sunny days per year. Annual precipitation totals 71.2 inches (wetter than the 38-inch national average). The area receives 49.1 inches of snow annually, making winter weather a significant factor for residents. The city sits at an elevation of 118 feet.
Temperature
20°F Jan (-7°C)
50°F Jul (10°C)
| Annual Average | 34.7°F |
| 36% below US avg | |
| January Average | 20°F (-7°C) |
| July Average | 50°F (10°C) |
| Sunny Days | 207 days/yr |
Geography
| Elevation | 118 ft (36 m) |
| Area | 213.0 sq mi (551.6 km²) |
| Population Density | 2/sq mi |
| Coordinates | 55.9360°N, 129.9866°W |
| Timezone | America/Vancouver |
Precipitation & Snow
Air Quality
Earthquake History
9 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.3.
| Apr 29, 2013 | 60 km ENE of Thoms Place, Alaska | M4.3 | 92 km | 13 km |
| Sep 7, 2004 | 71 km ENE of Wrangell, Alaska | M4.2 | 128 km | 5 km |
| Jan 18, 2008 | 17 km E of Hyder, Alaska | M3.1 | 15 km | 5 km |
| Apr 12, 2019 | 22 km WNW of Hyder, Alaska | M3.0 | 24 km | 8 km |
| Jan 18, 2008 | 11 km N of Hyder, Alaska | M2.9 | 10 km | 16 km |
| May 7, 2004 | 48 km ENE of Wrangell, Alaska | M2.8 | 128 km | 6 km |
| May 12, 2016 | 20 km NW of Hyder, Alaska | M2.8 | 20 km | 4 km |
| Sep 11, 2015 | 5 km SE of Hyder, Alaska | M2.8 | 6 km | 11 km |
| Jun 21, 2020 | 62 km WNW of Terrace, Canada | M2.8 | 145 km | 0 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Nearby Volcanoes
3 volcanoes within 200 km. Closest: Iskut-Unuk River Cones (80 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Iskut-Unuk River Cones | Pyroclastic cone(s) | 1,880 m (6,168 ft) | 1800 | 80 km |
| Hoodoo Mountain | Subglacial | 1,850 m (6,070 ft) | -7050 | 123 km |
| Spectrum Range | Shield | 2,430 m (7,972 ft) | Unknown | 171 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 20°F (-7°C) | 8.2 in | Coldest |
| February | 24°F (-5°C) | 6.2 in | |
| March | 26°F (-3°C) | 5.0 in | |
| April | 33°F (0°C) | 3.3 in | |
| May | 40°F (5°C) | 3.3 in | |
| June | 47°F (8°C) | 3.2 in | Driest |
| July | 50°F (10°C) | 3.4 in | Warmest |
| August | 50°F (10°C) | 4.7 in | |
| September | 44°F (7°C) | 7.5 in | |
| October | 35°F (2°C) | 9.7 in | Wettest |
| November | 26°F (-4°C) | 8.0 in | |
| December | 22°F (-6°C) | 8.8 in |
Stewart has a seasonal temperature swing of 30°F / from 20°F in January to 50°F in July. Total annual precipitation is 71.2 inches, with October being the wettest month (9.7") and June the driest (3.2").