Sioux Lookout – Weather – A muggy and stormy day is setting up for Sioux Lookout, with cloud cover, high humidity, and potential thunderstorms on the way. After a warm and breezy night, conditions will stay unsettled through Friday before skies start to improve over the weekend.

Today’s Weather Overview

Current Conditions (6:00 AM CDT – Sioux Lookout Airport)

• Temperature: 16.8°C

• Condition: Mostly Cloudy

• Wind: SSE at 15 km/h, gusting to 27 km/h

• Pressure: 101.2 kPa and falling

• Dew Point: 9.0°C

• Humidity: 60%

• Visibility: 24 km

Skies are mainly cloudy this morning with a 40% chance of showers and risk of a thunderstorm. The day will remain warm and muggy, with a high of 27°C and a humidex of 35. Winds will stay moderate from the southeast and the UV index is 8 — classified as very high, so sun protection is essential during breaks in the cloud cover.

Tonight’s Forecast

• 🌧️ 30% chance of evening showers, rising to 70% near midnight.

• ⛈️ Risk of a thunderstorm throughout the night.

• 🌡️ Low: 17°C

• Winds stay light to moderate.

Tomorrow’s Forecast – Friday, July 11

• ☁️ Morning: Cloudy with a 70% chance of showers and risk of a morning thunderstorm.

• 🌦️ Afternoon: Rain chances ease to 30%.

• 🌡️ High: 23°C

• 💧 Humidex: 30

• 🌞 UV Index: 6 (High)

• 🌙 Night: Showers continue | Low: 16°C

Saturday Outlook

• ☁️ Day: Cloudy with a 40% chance of showers

  • High: 21°C

• 🌙 Night: Clearing skies

  • Low: 15°C

Wardrobe & Activity Tips

• Today: Dress for heat and humidity. Light, moisture-wicking clothing is ideal. Carry a rain jacket or umbrella just in case. Stay hydrated.

• Tonight–Friday: Keep waterproof layers handy with thunderstorm risk persisting. Avoid outdoor evening events without cover.

• Saturday: Mild, cooler air makes it more comfortable for outdoor activities once skies clear overnight.

Weather Trivia

Did you know?
Sioux Lookout’s humidex rarely climbs above 35 — but today, it will push into that uncomfortable range. High humidex values not only impact comfort but increase the risk of heat-related illness, especially during physically demanding activity.