Late September Serving Up Fall Vibes with a Side of Sunshine
SIOUX LOOKOUT – WEATHER – If you’re in Sioux Lookout this morning, chances are you’re feeling that cool, damp northern air clinging to your sleeves. The day began mostly cloudy, and while it’s not exactly sweater weather yet, the brisk mornings and comfortable afternoons are definitely whispering, “Autumn is coming…”
But don’t worry—it’s not all grey skies ahead. There’s a gentle mix of sun and seasonal warmth on the way, with just a little rain sprinkled in for good measure.
Today: Foggy Feel, Clearing Skies by Noon
As of 6:00 AM CDT, it was a mostly cloudy start to the day at Sioux Lookout Airport, with a current temperature of 11.6°C. Humidity is nearly maxed out at 99%, giving the morning a foggy, saturated feeling, while a gentle breeze from the east-northeast at 3 km/h keeps things calm. Visibility is great at 24 km, and barometric pressure is at 102.4 kPa and falling, hinting at a change in the air later today or tomorrow.
By midday, skies are expected to transition to a mix of sun and cloud, offering up a more cheerful atmosphere. The daytime high will hit 19°C, which feels just right for mid-September. The UV index sits at 5, so if you’re spending your afternoon outdoors—yes, sunscreen is still a smart choice.
Tonight: Chilly but Calm
The skies remain partly cloudy tonight, and temperatures will dip to a cool low of 8°C. It’s not cold enough for frost, but it is the kind of night where a cozy hoodie or light jacket is a must for any late-night stargazing or campfire chats.
Friday: Cloud Returns, Rain Possible After Dark
Friday, September 19, brings a mix of sun and cloud in the morning, but expect increasing cloudiness as the day goes on. The high climbs to a warm 21°C, making it a great day for errands, walks, or sneaking in that last patio lunch of the season.
By Friday night, we’re looking at cloudy periods and a 30 percent chance of showers, with the overnight low around 9°C. Bring the umbrella if you’re heading out—you may or may not need it, but better safe than soggy.
Weekend Outlook: Mild, Mixed, and Slightly Soggy
Saturday, September 20, continues with a mix of sun and cloud, and again a 30 percent chance of showers throughout the day. The high of 19°C keeps things mild and manageable for outdoor plans.
Saturday night mirrors the day with cloudy periods, a continued 30 percent chance of showers, and a low of 10°C.
Sunday, September 21, shapes up nicely with a mix of sun and cloud and a high of 20°C—perfect for wrapping up your weekend on a pleasant note. Sunday night remains cloudy with no major rain threat, and a mild low of 10°C.
What to Wear?
Layers are your best friend this weekend. You’ll want long sleeves or light jackets in the morning and evening, with breathable gear for those afternoon warm-ups. Keep a rain jacket or umbrella on standby Friday evening into Saturday, just in case those scattered showers make an appearance.
Weather Trivia: Sioux Lookout’s Fall Fog Factor
Sioux Lookout’s location in a heavily forested and lake-rich region means it’s especially prone to early morning fog in the fall. When warm daytime temps meet cool overnight air, that moisture from the lakes rises and settles, creating those classic misty northern mornings we all love—or cautiously drive through!
