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Weather & Climate in Tillicum, BC
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Tillicum experiences four distinct seasons with an average annual temperature of 52°F (11°C). Winters average 42°F in January while summers reach 66°F in July. The area gets 248 sunny days per year, above the national average. Annual precipitation totals 32.0 inches. The area receives 10.4 inches of snow annually. The city sits at an elevation of 52 feet.
Temperature
42°F Jan (5°C)
66°F Jul (19°C)
| Annual Average | 51.6°F |
| 4% below US avg | |
| January Average | 42°F (5°C) |
| July Average | 66°F (19°C) |
| Sunny Days | 248 days/yr |
Geography
| Elevation | 52 ft (16 m) |
| Area | 55.8 sq mi (144.5 km²) |
| Population Density | 181/sq mi |
| Coordinates | 48.4500°N, 123.4000°W |
| Timezone | America/Vancouver |
Precipitation & Snow
Air Quality
Earthquake History
617 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M5.4.
| May 3, 1996 | 8 km NNE of Lake Marcel-Stillwater, Washington | M5.4 | 137 km | 4 km |
| Jun 10, 2001 | 18 km N of Satsop, Washington | M5.0 | 143 km | 40 km |
| Apr 14, 1990 | 4 km ENE of Deming, Washington | M5.0 | 101 km | 12 km |
| Jan 29, 1995 | 3 km WSW of Des Moines, Washington | M5.0 | 141 km | 15 km |
| Jun 23, 1997 | 2 km NE of Enetai, Washington | M4.9 | 113 km | 13 km |
| Feb 21, 2025 | 28 km W of Squamish, Canada | M4.8 | 139 km | 10 km |
| Apr 25, 2003 | 26 km W of Brinnon, Washington | M4.8 | 87 km | 51 km |
| Jan 30, 2009 | 6 km ESE of Lofall, Washington | M4.7 | 95 km | 62 km |
| Jul 12, 2019 | 2 km S of Roosevelt, Washington | M4.6 | 121 km | 29 km |
| Jan 24, 2020 | 46 km WNW of Neah Bay, Washington | M4.5 | 132 km | 10 km |
| Mar 3, 2025 | 2025 Orcas Island, Washington | M4.5 | 47 km | 16 km |
| Jun 24, 1997 | 19 km SSW of Gibsons, Canada | M4.4 | 89 km | 3 km |
| Apr 2, 1990 | 2 km ENE of Deming, Washington | M4.3 | 99 km | 0 km |
| Feb 19, 1991 | 31 km E of Squamish, Canada | M4.3 | 147 km | 5 km |
| Sep 21, 2002 | 9 km SW of Friday Harbor, Washington | M4.1 | 21 km | 23 km |
| Feb 23, 2017 | 11 km NE of Hoodsport, Washington | M4.1 | 111 km | 15 km |
| Jun 15, 1994 | 1 km WNW of Hoodsport, Washington | M4.0 | 117 km | 44 km |
| Apr 3, 1990 | 3 km ENE of Deming, Washington | M4.0 | 100 km | 1 km |
| Apr 14, 1990 | 2 km ESE of Deming, Washington | M4.0 | 98 km | 3 km |
| Sep 26, 2024 | 12 km E of Saanichton, Canada | M4.0 | 18 km | 52 km |
Source: USGS Earthquake Catalog (M2.5+, 1990-2025). Sorted by magnitude.
Tsunami History
4 tsunamis recorded within 500 km. Highest wave on record: 3.0 m (10 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1894 | PUYALLUP RIVER DELTA, TACOMA, WA | Meteorological | 3.0 m | 2 | 148 km |
| 1891 | WASHINGTON | Eruption + Earthquake | 2.4 m | - | 51 km |
| 1949 | PUGET SOUND, WA | Meteorological | 2.4 m | - | 143 km |
| 1820 | CAMANO ISLAND, WA | Meteorological | - | - | 88 km |
Source: NOAA/NCEI Historical Tsunami Database.
Nearby Volcanoes
5 volcanoes within 200 km. Closest: Baker (122 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Baker | Stratovolcano(es) | 3,285 m (10,778 ft) | 1880 | 122 km |
| Garibaldi | Stratovolcano | 2,678 m (8,786 ft) | -8060 | 158 km |
| Garibaldi Lake | Volcanic field | 2,316 m (7,598 ft) | Unknown | 167 km |
| Glacier Peak | Stratovolcano | 3,213 m (10,541 ft) | 1700 | 173 km |
| Cayley Volcanic Field | Volcanic field | 2,375 m (7,792 ft) | Unknown | 186 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
Wildfire History
5 wildfires (100+ acres) recorded within 100 km. Largest: DELABARRE (4,176 acres, 2023).
| Year | Name | Acres Burned | Distance |
| 2023 | DELABARRE | 4,176 | 75 km |
| 2018 | MAPLE | 3,547 | 99 km |
| 2015 | PARADISE | 2,818 | 88 km |
| 2016 | HAYES TWO | 2,679 | 72 km |
| 2011 | BIG HUMP | 1,400 | 87 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 42°F (5°C) | 5.0 in | |
| February | 42°F (5°C) | 3.6 in | |
| March | 45°F (7°C) | 2.8 in | |
| April | 49°F (9°C) | 1.8 in | |
| May | 54°F (12°C) | 1.3 in | |
| June | 59°F (15°C) | 1.1 in | |
| July | 66°F (19°C) | 0.7 in | Warmest, Driest |
| August | 63°F (17°C) | 0.9 in | |
| September | 59°F (15°C) | 1.2 in | |
| October | 51°F (10°C) | 2.8 in | |
| November | 44°F (6°C) | 5.4 in | Wettest |
| December | 40°F (4°C) | 5.3 in | Coldest |
Tillicum has a seasonal temperature swing of 27°F / from 40°F in December to 66°F in July. Total annual precipitation is 31.9 inches, with November being the wettest month (5.4") and July the driest (0.7").