\Monday Kicks Off Wet and Wild in Atikokan

Atikokan, Ontario – Monday, September 1, 2025 – It’s the start of September, but Mother Nature isn’t easing into fall gently. Instead, she’s kicking off the month with the threat of highly localized thunderstorms that could drop buckets of rain in short order. At 6:00 AM, the temperature sits at a damp and foggy 13.2°C, with humidity hovering near saturation at 99%. The wind is calm for now, but the atmosphere is far from it.

Special Weather Statement – Rainfall Roulette

Environment Canada has issued a Special Weather Statement for Atikokan, Shebandowan, and Quetico Park, warning of localized heavy rainfall of 40 to 60 mm, particularly where slow-moving thunderstorms decide to linger. While not everyone will get drenched, those caught under a stubborn cell could see flash-flood-like conditions—umbrellas may not be enough if you’re in the wrong spot at the wrong time.

Today’s forecast calls for mainly cloudy skies with a 70 percent chance of showers and a risk of thunderstorms. Fog patches will lift by late morning, but the moisture in the air will linger, driving the humidex to a sticky 31. The UV index is moderate at 4, so there’s still reason to pack some sunscreen between the storms.

By tonight, skies will partly clear, but not before a 60 percent chance of showers and more potential thunder. Temperatures dip back to a cool 13°C, giving us a bit of relief.

Looking Ahead – Rollercoaster Weather Continues

Tuesday, September 2nd, brings a mix of everything: increasing cloudiness, a 40 percent chance of showers in the late morning, and a higher chance of rain and storms by afternoon. The wind will swing in from the north at 20 km/h, gusting up to 40 km/h by late afternoon, cooling things off with a high of 22°C, feeling like 27 with the humidex. Expect a cloudy night with more showers and a low of 8°C.

Wednesday ushers in a noticeable temperature drop, with highs only reaching 9°C and continued cloudy skies with a 40 percent chance of rain—a definite hint that fall is knocking at the door. The mercury falls to +3°C overnight, and Thursday looks only slightly warmer, with highs near 10°C and continued unsettled conditions.

Atmospheric Stats and History

• Current Temperature: 13.2°C

• Wind: Calm

• Barometric Pressure: 102.3 kPa, falling

• Humidity: 99%

• Historic High for Sept 1: 30.2°C (1999)

• Historic Low for Sept 1: 1.0°C (1976)

What to Wear?

If you’re venturing out today, layers are your best friend. A light waterproof jacket and rain boots are smart picks, and don’t forget an umbrella that won’t betray you at the first gust of wind. You might even want to stash a dry pair of socks—you’ll thank us later.

Weather Trivia – Quetico’s Quirks

Did you know Quetico Provincial Park, just west of Atikokan, averages over 750 mm of precipitation annually, much of it in the summer months? It’s a haven for canoe trippers—but not always for their rain gear!