THUNDER BAY – WEATHER DESK – Northwestern Ontario is starting 2026 under a firm grip of Arctic cold. Many communities will see sun or clearing skies, but the bigger story is dangerous wind chills—routinely in the -30s, and pushing into the -40s in parts of the Far North.

In several locations, Environment Canada notes frostbite risk, and in the coldest zones frostbite can occur within minutes.

Pets: Dogs, Cats, Livestock

In extreme cold and wind chill, the safest choice for dogs and cats is indoors. Keep walks short and purposeful (potty break only), and choose sheltered routes out of the wind. Watch closely for signs they’re getting too cold: shivering, lifting paws, refusing to walk, whining, hunching, or trying to turn back.

Wipe off snow and ice when you come inside, especially between toes, and check paws for cracks—ice and road salt can burn. If you use booties, make sure they fit well; if not, paw balm can help. Cats should not be left to roam in this weather—provide a warm, quiet indoor spot away from drafts.

Livestock will feel the cold too. Take precautions.

Regional Weather Snapshot

Thunder Bay

Mainly sunny today with a high near -14°C, but wind chills remain harsh (around -30 this morning). Clear tonight near -20°C with a continued frostbite risk.

Dryden and Vermilion Bay

Bitter cold continues with sun and a high near -18°C. Wind chills are expected to dip into the -30s overnight, keeping frostbite risk elevated for anyone outside for long.

Kenora and Lake of the Woods region

A cold but generally brighter day: mainly sunny with a high near -17°C and wind chills in the -20s to -30s at times. Cold persists tonight and into Friday.

Sioux Lookout

Sunny, but very cold with a high near -19°C and wind chill around -39 this morning (frostbite risk). Cold continues tonight with wind chill near -33.

Ogoki Post

Cloudy with a 60% chance of light snow and local blowing snow. High near -21°C with wind chill near -41 this morning and about -33 this afternoon—Environment Canada flags frostbite in minutes in these conditions.

Sandy Lake

Increasing cloud with a high near -21°C and a brutal wind chill near -43 this morning. A 60% chance of light snowarrives late today/overnight with wind chills staying deep in the -30s.

Sachigo Lake

One of the coldest spots in today’s set: increasing cloud with a 60% chance of flurries and strong winds. High near -22°C, with wind chill near -45 this morning and around -36 this afternoon—again, frostbite in minutes territory. Light snow continues tonight.

Traveller Notes

• The cold is the hazard even where skies are sunny: limit time outside during fuel stops and keep exposed skin covered.

• If you’re driving, conditions can change quickly in bands of light snow and blowing snow in the west and Far North.

• Always check 511on.ca before you go for the latest road conditions, closures, and advisories.

Wardrobe Recommendations

Today is “full winter protection” across the region:

• Insulated coat with a windproof shell, warm base layer, toque, thick mitts, and insulated boots.

• Use a neck warmer/face covering—wind chill in the -30 to -45 range can cause frostbite fast.

Weather Trivia

A sunny sky can be misleading in Arctic air. With low humidity and brisk wind, your body loses heat rapidly—so “nice weather” can still be dangerous weather when wind chills push into the -30s and -40s.

Weather Summary

Northwestern Ontario weather summary for Jan. 1, 2026: widespread Arctic cold with dangerous wind chills in the -30s to -40s across Thunder Bay, Dryden, Kenora, Sioux Lookout, Ogoki Post, Sandy Lake and Sachigo Lake. Frostbite risk is high; check 511on.ca for road conditions.