THUNDER BAY – WEATHER – Across Northwestern Ontario Tuesday starts under cooler, cloudier skies compared to Monday’s heat and storms.

While some areas will enjoy dry conditions, others will see scattered showers or even an isolated thunderstorm.

Local smoke remains a factor in parts of the region. Travellers should check 511ON.ca for the latest road conditions.

Current Conditions (Morning Observations)

Thunder Bay – 8:00 AM EDT

• Temp: 16.3°C | Humidity: 96% | Wind: WNW 4 km/h

• Mostly cloudy, visibility 15 km

Kenora – 7:00 AM CDT

• Temp: ~15°C | Humidity: High | Wind: Light W

• Cloudy with showers nearby

Fort Frances – 7:00 AM CDT

• Temp: ~16°C | Humidity: High | Wind: Light NW

• Partly cloudy

Dryden – 7:00 AM CDT

• Temp: ~15°C | Humidity: Near 100% | Wind: Light NW

• Cloudy

Sioux Lookout – 7:00 AM CDT

• Temp: ~14°C | Humidity: Near 100% | Wind: Calm

• Mostly cloudy

Ogoki Post – Early Morning

• Temp: ~14°C | Humidity: High | Wind: Light W

• Mostly cloudy with haze

Neskantaga – Early Morning

• Temp: ~13°C | Humidity: High | Wind: Calm

• Mainly cloudy

Fort Hope – Early Morning

• Temp: ~13°C | Humidity: High | Wind: Light NW

• Mostly cloudy

Regional Forecasts for Today – Tuesday, August 12, 2025

• Thunder Bay: Mainly cloudy with 40% chance of showers and risk of a thunderstorm this afternoon. Local smoke possible. High 24°C, humidex 29. UV 6 – High. Winds W 20 km/h gusting 40.

• Kenora: Cloudy with 40% chance of showers. High 19°C, UV 4 – Moderate.

• Fort Frances: Cloudy with 30% chance of showers. High 21°C, UV 5 – Moderate.

• Dryden: Cloudy with 40% chance of showers. High 19°C, UV 4 – Moderate.

• Sioux Lookout: Cloudy with 40% chance of showers, risk of early thunderstorm. High 19°C.

• Ogoki Post: Mainly cloudy, slight chance of showers. High 20°C.

• Neskantaga: Mostly cloudy, light winds. High 20°C.

• Fort Hope: Mainly cloudy, chance of isolated showers. High 20°C.

Tonight – Tuesday, August 12, 2025

• Thunder Bay: Partly cloudy, 30% chance of showers, local smoke early. Low 14°C.

• Kenora/Dryden/Sioux Lookout: Cloudy periods, 30% chance of showers. Lows 12–13°C.

• Fort Frances: Cloudy periods, low 12°C.

• Ogoki Post/Neskantaga/Fort Hope: Mostly cloudy, low 11–12°C.

Wednesday, August 13, 2025

• Thunder Bay: Mainly cloudy. High 23°C, humidex 26.

• Kenora/Dryden/Sioux Lookout: Cloudy. High 20°C.

• Fort Frances: Cloudy with sunny breaks. High 21°C.

• Ogoki Post/Neskantaga/Fort Hope: Partly cloudy. High 21°C.

Wardrobe Recommendations

• Light layers for cool mornings and milder afternoons.

• Keep a windbreaker or light rain jacket handy for scattered showers.

• Sunglasses for areas that see breaks in the cloud.

• For smoke-sensitive individuals, consider a mask in affected areas.

Traveller Information

Road Conditions (as of this morning):

• Thunder Bay to Kenora via Hwy. 11/17: Mostly clear and dry; localized smoke may reduce visibility.

• Fort Frances to Kenora (Hwy. 71): Dry with possible wet sections after showers.

• Dryden to Sioux Lookout (Hwy. 72): Clear early, chance of showers later.

• Ogoki Post/Neskantaga/Fort Hope winter road corridors: Closed for the season; summer travel by air or boat only.

✅ Check 511ON.ca for live road updates, closures, traffic cameras, and travel alerts before departing.

Weather Trivia

Kenora, Dryden, and Sioux Lookout often share nearly identical summer patterns because they sit in the same air mass corridor between the Prairies and the Great Lakes. When storms hit one, the others usually aren’t far behind.