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Dease Lake Weather

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Live forecasts update automatically; written guidance last reviewed 16 June 2026 by the Canada Perspective Weather Desk. Data from Environment and Climate Change Canada and other national met services via Open-Meteo.

C
Partly cloudyDease LakeFeels like 7° · Wind 6 km/h · Humidity 89%
UV 4 ModerateSunrise 06:08Sunset 21:18
Today☁️19°💧2%
Wed☁️19°💧2%
Thu☁️22°💧2%
Fri🌦️21°10°💧31%
Sat🌦️18°💧43%
Sun☁️14°💧60%
Mon🌦️13°💧61%

Live data from Open-Meteo · updates automatically ·

Dease Lake is seeing conditions typical of its northern interior location, with the live forecast above showing the current temperature and sky cover. This small community along Highway 37, near the headwaters of the Stikine River, sits in a valley that funnels cool air even in summer.

What is driving today’s weather in Dease Lake?

The pattern over the Cassiar Mountains and the nearby Tanzilla Plateau is the main influence. A ridge of high pressure or a passing trough will determine whether you get clear skies or cloud build-up, common for this time of year. For broader regional context, check the Canada weather hub for updates on systems moving through northern B.C.

How does Dease Lake compare to nearby communities?

Dease Lake often runs a few degrees cooler than Watson Lake weather to the east, due to its higher elevation and valley position. It is generally milder than Iskut weather to the south, but can see more persistent cloud than Tatogga weather near the lake. For a look at the territorial capital, see Whitehorse weather for a comparison of northern interior patterns.

Elevationapprox. 800 metres (2,625 ft)
RegionNorthern B.C., Cassiar Country
Nearest major centreDease Lake is about 360 km south of Whitehorse
Typical July high18°C to 22°C, but can dip to single digits overnight
What is the Dease Lake weather 14 day forecast reliability?

For a remote northern location like Dease Lake, a 14-day outlook is a general trend guide, not a precise prediction. Day-to-day accuracy is best within the first 3–5 days due to shifting mountain weather patterns.

Is there a Dease Lake weather cam available?

There is no official public webcam operated by Environment Canada at Dease Lake. Travellers often rely on the Dease Lake weather cam feeds from local lodges or the highway maintenance cams along Highway 37 for real-time visuals.

How does the weather affect driving on Highway 37?

Fog and sudden rain or snow can reduce visibility, especially near the lake and mountain passes. Always check the weather warning page before heading out, and compare conditions with Vancouver Weather for a sense of the coastal-to-interior gradient.