Sault Ste. Marie – Weather – The Soo is sitting under a damp, mostly cloudy sky this morning. The barometric pressure is rising, which often points to more stable weather, but the near-saturated air (very high humidity) means fog, drizzle, and flurries can still develop easily—especially with a risk of freezing drizzle at times today and again late tonight.

Today’s Weather Overview

Current Conditions (Observed 7:00 AM EST, Wednesday March 4, 2026)

• Condition: Mostly cloudy

• Temperature: -4.5°C (23.9°F) (headline: -5°C)

• Wind: ESE 3 km/h

• Wind Chill: -6

• Pressure: 102.3 kPa, rising

• Humidity: 96%

• Dew Point: -5.1°C (22.8°F)

• Visibility: 24 km

With humidity at 96% and the dew point nearly matching the air temperature, it won’t take much for low cloud and light precipitation to cause slick, glazed surfaces if temperatures hover around freezing.

Today (Wednesday)

• Sky: Cloudy

• Morning: 30% chance of flurries

• Afternoon: 30% chance of drizzle

• Main risk: Freezing drizzle this morning

• Fog: Fog patches dissipating this morning

• Wind: Up to 15 km/h

• High: +3°C (37°F)

• Wind Chill: Near -5 this morning

• UV Index: 2 (Low)

Expected Conditions (Next Three Days)

Tonight (Wednesday Night)

• Sky: Cloudy

• Precip: 30% chance of drizzle changing to 30% chance of flurries this evening

• Main risk: Freezing drizzle late this evening and overnight

• Wind: Up to 15 km/h

• Low: -5°C (23°F)

• Wind Chill: Near -11 overnight

Thursday, March 5

• Sky: Cloudy, becoming a mix of sun and cloud in the morning

• Wind: Southeast 20 km/h

• High: +1°C (34°F)

• Wind Chill: Near -9 in the morning

• UV Index: 3 (Moderate)

• Night: Cloudy, low +1°C (34°F)

Friday, March 6

• Sky: Cloudy

• High: +6°C (43°F)

• Night: Cloudy with 60% chance of showers, low +2°C (36°F)

Wardrobe Recommendations

• This morning: Dress for damp cold—winter coat, warm hat, gloves, and a neck warmer. Even with light wind, it’ll feel chilly near -5°C.

• Freezing drizzle risk (today + late tonight): Prioritize boots with good grip. Sidewalks, steps, and parking lots can become slippery fast even if precipitation looks light.

• This afternoon: With +3°C, go with layers you can adjust (mid-layer + water-resistant outer shell).

• Thursday/Friday: Milder temperatures mean more melt—water-resistant footwear will help, especially with the shift toward showers by Friday night.

Weather Trivia

Freezing drizzle is most common when temperatures hover near 0°C and clouds contain supercooled water droplets. Those droplets freeze on contact with cold surfaces, creating a thin glaze that can be harder to spot than fresh snow—one reason it’s such a travel hazard.

Summary

Sault Ste. Marie weather forecast for Wednesday, March 4, 2026: mostly cloudy and -5°C early with rising pressure and very high humidity. A 30% chance of flurries this morning then a 30% chance of drizzle this afternoon, with a risk of freezing drizzle this morning. Tonight brings drizzle changing to flurries with freezing drizzle risk late, low -5°C. Thursday turns brighter with a mix of sun and cloud and a high of +1°C.