Fog Fades, Sunshine Simmers: Sioux Lookout’s Spring Forecast Takes Flight

Sioux Lookout, Ontario – April 24, 2025 – It’s a damp but promising start to the day in Sioux Lookout, where early morning clouds and fog hint at a quietly changing sky. As of 5:00 AM CDT at Sioux Lookout Airport, the temperature sits at a mild 2.2°C with the dew point matching exactly, making the humidity a perfect 100%—so yes, it’s quite literally in the air. Visibility stretches to 16 km, despite mostly cloudy skies. Winds are light from the northeast at 5 km/h, and the barometric pressure is on the rise at 102.6 kPa, a good sign for stability moving into the weekend.

Thursday Forecast: Clouds in Charge with Gentle Hints of Rain

This morning brings a 30 percent chance of drizzle or light showers as fog patches slowly lift with the sunrise. Skies will remain mostly cloudy through the day, but with luck, a few sunbeams might sneak through. The temperature will top out at a comfortable 10°C—enough to loosen the winter scarf but not quite T-shirt weather yet. The UV index will reach 4, a moderate level that calls for some light sun protection if you’re out and about.

Tonight: A Cool and Calm One

By tonight, skies will clear up just a bit, becoming partly cloudy as fog patches begin to creep in again after midnight. Temperatures will dip to a frosty -2°C, so if you’re headed out stargazing or night hiking, layer up. It may feel like a spring day, but it’s still acting like winter overnight.

Friday Forecast: A Taste of What’s to Come

Friday brightens up with a mix of sun and cloud, though there’s a 30 percent chance of a quick afternoon shower. Morning fog will dissipate quickly, and winds will pick up from the north at 20 km/h by afternoon. It’ll be warmer, with a daytime high of 14°C, but the morning wind chill might still bite a bit, making it feel like -4°C. The UV index rises slightly to 5, so sunglasses and sunscreen wouldn’t go amiss.

Friday night clears out beautifully, with the temperature falling just below freezing to -1°C—another night for flannel sheets or a cozy fire.

The Weekend Forecast: Flip the Switch to Spring

Saturday, April 26: Sunny skies and spring vibes abound! Expect a gorgeous high of 18°C, perfect for picnics, hiking, or soaking in some much-needed Vitamin D.

Saturday Night: The clouds creep back with a 30 percent chance of showers. Temperatures stay mild with a low of +5°C.

Sunday, April 27: A mix of sun and cloud returns with a 30 percent chance of showers. The high will reach a solid 15°C, and Sunday night brings a 40 percent chance of rain with a low of 7°C.

What to Wear in Sioux Lookout

Today calls for layers you can peel off—start with something warm for the morning fog and chill, then scale back as temperatures rise. Waterproof footwear might be wise if you’re out early, and keep a toque or hood handy for tonight’s frosty dip. By Saturday, though? Break out the sunglasses and maybe even those spring sneakers!

Historic Weather Glimpse

On April 24, Sioux Lookout has seen both spring heat and winter leftovers. The warmest recorded temp on this date was 21.7°C back in 1980, while the coldest reached a biting -11.5°C in 1966. So today’s 10°C is downright civil in comparison.

Weather Trivia: Welcome to the “Hub of the North”

Sioux Lookout isn’t just a gateway to adventure—its unique location between lakes and boreal forest means it gets frequent fog and dramatic spring transitions. That’s why locals know: in April, you dress for all four seasons… just in case.