Winter Keeps Its Grip—Flurries, Freezing Drizzle, and Cold Nights
Sioux Lookout stays cloudy and cold, with flurries and freezing drizzle possible. Wind chills drop to -16°C overnight. Snow chances increase later in the week.
SIOUX LOOKOUT – WEATHER DESK – Sioux Lookout is in for a typical March week in Northwestern Ontario, with cloudy skies, occasional flurries, and some bitterly cold nights ahead. If you were hoping for a hint of spring, you’ll have to wait a little longer. For now, it’s all about staying bundled up and watching for slippery conditions, especially with the risk of freezing drizzle this morning.
Current Conditions (March 4, 2025 – 6:00 AM CST)
At Sioux Lookout Airport, it’s currently -3°C under cloudy skies. The humidity sits at 76%, and a north-northeast wind at 15 km/h makes it feel closer to -8°C with the wind chill. Visibility is solid at 24 km, and barometric pressure is 101.0 kPa and rising, meaning the weather will hold steady for now.
Historically, March 4 in Sioux Lookout has seen everything from an early taste of spring to deep winter cold. The warmest recorded temperature on this date was 8.7°C, while the coldest was -37.2°C—so today’s -3°C doesn’t seem so bad in comparison!
Today’s Forecast: Cloudy with a Few Flurries and a Wind Chill
Expect a cloudy day with a 30% chance of flurries throughout. There’s also a risk of freezing drizzle this morning, so watch for slick roads and sidewalks. Winds will increase from the north to 20 km/h by late afternoon, keeping temperatures feeling colder than the actual high of -2°C. The wind chill will hover near -11°C, making it feel brisk all day. The UV index is low at 1, meaning not much sunshine will break through the clouds.
Tonight, cloudy skies persist with another 30% chance of flurries. Winds will be light, but temperatures drop to -11°C, and the wind chill will make it feel like -16°C overnight.
Wednesday: More Clouds, More Cold
Wednesday brings another cloudy day with light winds up to 15 km/h. The high will only reach -5°C, but with the wind chill, it will feel like -16°C in the morning and -9°C by the afternoon.
Wednesday Night: Cloud cover thickens overnight, with a low of -16°C.
Thursday and Beyond: Flurries and Deep Cold
Thursday remains cloudy with a 40% chance of flurries, and the temperature rises slightly to -4°C.
Thursday night looks partly cloudy but frigid, with the temperature dropping to -21°C.
Friday offers a sunny but very cold day, with a high of -10°C and a clear but chilly night at -16°C.
Wardrobe Recommendations
It’s layering season! The cold wind and risk of freezing drizzle today mean you’ll need a warm, waterproof jacket, gloves, a hat, and sturdy boots to handle the slippery conditions. Wednesday and Thursday bring even colder wind chills, so a scarf and extra layers will help keep the frost at bay.
Weather Trivia: Sioux Lookout’s Coldest Winter Ever?
Did you know that Sioux Lookout has recorded temperatures below -40°C multiple times in history? The region is no stranger to brutal Arctic air masses, often making it one of the coldest places in Ontario during deep winter!
