July 6, 2025: Sioux Lookout Weather Forecast – Sunny and Calm Today, Thunderstorm Risk Returns Monday

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Spring weather

Sioux Lookout – Weather – It’s a refreshingly cool and clear start to the day in Sioux Lookout, offering residents a break from the heat and storms that marked the start of July. Today will feature sunshine, comfortable temperatures, and a great opportunity to enjoy the outdoors.

However, keep your eyes on the forecast—thunderstorms may return Monday afternoon as conditions turn warmer and more humid.

Today’s Weather Overview

Current Conditions – 5:00 AM CDT

  • Temperature: 9.9°C

  • Humidity: 94%

  • Dew Point: 8.9°C

  • Wind: North at 5 km/h

  • Pressure: 102.0 kPa (rising)

  • Visibility: 24 km

  • Sky: Partly Cloudy

Sunday Forecast

  • Sky: A mix of sun and cloud

  • High: 24°C

  • UV Index: 8 – Very High; use sun protection

  • Tonight: Partly cloudy, with a low of 15°C

Tomorrow’s Outlook – Monday, July 7

  • Sky: Sun and cloud with a 30% chance of showers late in the afternoon

  • Risk: Thunderstorms possible in the evening

  • High: 26°C | Humidex: 28 – A more humid feel

  • UV Index: 7 – High

  • Night: Cloudy with a 40% chance of showers, low of 14°C

Extended Forecast

  • Tuesday, July 8: Cloudy with 40% chance of showers, high of 23°C

  • Wednesday, July 9: Sunny and pleasant, high of 25°C

  • Wednesday Night: Clear skies, low near 16°C


Wardrobe Recommendations

  • Today: Start your morning with a light jacket or sweater, but shift to short sleeves or summer wear by midday.

  • Tomorrow: Consider layers and a rain jacket, especially if you’re out late in the afternoon when thunderstorms may develop.

Health & Safety Tips

  • UV Alert: With a UV index of 8 today and 7 tomorrow, make sure to apply sunscreen, wear a hat, and use sunglasses.

  • Storm Prep Monday: Be alert for quick-developing showers or storms—a good day to check weather apps or alerts if outdoors.

  • Mosquito Watch: Mild, humid nights create ideal conditions for mosquito activity. Bring repellent for evening outings.

Weather Trivia

Sioux Lookout’s climate makes it prone to sudden convective thunderstorm development, especially after warm, sunny mornings. The area averages over 100 mm of rainfall in July, making it one of the wetter communities in northwestern Ontario.

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