Cloudy, Damp, and Humid Days Continue as Soo Settles into Classic Lake-Effect Spring

SAULT STE. MARIE – WEATHER REPORT – Sault Ste. Marie continues to soak up a classic northern Ontario spring pattern—mild temperatures, high humidity, and a parade of fog, mist, and drizzle. With the city locked under a moist air mass and the influence of Lake Superior and Lake Huron adding to the soup, the Soo is in for several days of grey skies, scattered showers, and plenty of moisture in the air.

Fog and Showers Stick Around: Midweek Forecast

As of 5:23 AM EDT, it’s a mild 15.3°C at Sault Ste. Marie Airport with mist hanging in the air. The dew point is practically matching the temperature at 15.2°C, resulting in a steamy 99% humidity. Visibility is reduced to just 8 km, giving the city a foggy start to the day. Winds are from the east at 13 km/h, and the barometric pressure is 101.1 kPa and falling—indicating the sticky, unsettled pattern is hanging on.

Today’s forecast calls for cloudy skies with a 30 percent chance of showers or drizzle through the day. Fog patches will gradually dissipate later this morning, but the humidity will remain high. Winds will increase from the east at 20 km/h by early afternoon. The high will reach a comfortable but damp-feeling 19°C, and the UV index will climb to 6—high—meaning some sun might sneak through the clouds later in the day.

Tonight will see more of the same, with cloudy skies and a 30 percent chance of drizzle or showers returning, accompanied by fog patches developing again overnight. Winds will ease to light late this evening, and the low will settle at 12°C.

Thursday will bring a mix of sun and cloud, but still with a 40 percent chance of showers or drizzle. Morning fog will clear, but the air will stay muggy with a high of 19°C. Winds will shift to the southeast at 20 km/h in the afternoon, and the UV index will be 5—moderate. Thursday night will bring cloudy periods with a 30 percent chance of showers and a mild low of 11°C.

Friday will feature widespread showers and a high of 19°C, continuing into the night with a 40 percent chance of showers and a low of 9°C.

Saturday will stay cloudy with a 40 percent chance of showers and a cooler high of 14°C, with a cloudy and damp night dipping to 5°C.

Dressing for Soo’s Spring Soupy Stretch

It’s a raincoat and umbrella kind of week in the Soo, with waterproof footwear a must. Morning fog may make commutes tricky, so allow extra time and drive with caution. With humidity this high, breathable clothing will help you feel more comfortable during these damp days.

Historical Weather for May 14

Sault Ste. Marie’s record high for today is 27.6°C, while the record low is a chilly -1.2°C. Today’s high of 19°C sits well within the typical spring range for the region, though the fog and drizzle will make it feel cooler and damper than the thermometer suggests.

Sault Ste. Marie Weather Trivia

Did you know? The Soo’s position between two Great Lakes means it frequently experiences “lake-lock” during spring—when moist, warm air collides with the cool lake surfaces, leading to persistent fog, drizzle, and low visibility. This is especially common in May, when the lakes are still cold but the air above begins to warm rapidly.