From -2°C to 25°C: A Wild Weekend Temperature Swing in the Soo
SAULT STE. MARIE – WEATHER REPORT – It’s a frosty start to the day in Sault Ste. Marie, where a chilly -2.1°C and shallow morning fog are setting a wintry tone—but not for long. Spring is ready to take the wheel, with a major temperature rebound in store and sunny skies leading the charge into the week. By Monday, it’ll feel more like late June than mid-May.
From Freezer to Sunbather: Forecast Through Tuesday
At 6:00 AM EDT, conditions at Sault Ste. Marie Airport are frosty and foggy, with shallow fog reducing early visibility. The temperature reads -2.1°C, with matching dew point and 100% humidity—perfect ingredients for fog. The wind is light from the southeast at 4 km/h, contributing to a wind chill of -4°C. Barometric pressure is a stable 103.0 kPa and rising—an encouraging sign of clearing skies.
Today, fog will burn off, and a mix of sun and cloud will dominate. Winds will pick up out of the southeast at 30 km/h by late morning, and the high will climb to a far more reasonable 15°C. The UV index is 7, so despite the cool start, sun protection is still important.
Tonight, expect clear skies and gentle winds from the east at 20 km/h, becoming light overnight. The low will be a much milder 7°C—a full 9 degrees warmer than this morning’s frost.
Monday brings full-on spring glory with sunshine all day and a high of 25°C. Winds will stay modest from the east at 20 km/h late in the afternoon. The UV index climbs to 8, classified as “very high,” so make sunglasses and sunscreen your Monday essentials. Monday night remains clear with a low of 8°C.
Tuesday stays bright and beautiful with full sun and a high of 23°C. Some cloud may roll in overnight with cloudy periods and a mild low of 10°C.
Dress for the Swing: Layer, Then Shed
Today’s wardrobe challenge? Dressing for a -2°C morning that turns into a 15°C afternoon. Start with a warm jacket, but have a T-shirt ready underneath. As the week progresses, light spring clothes, sunglasses, and sun hats will become your daily go-tos.
Historic Weather for May 11
On this date, Sault Ste. Marie has seen a record high of 28.0°C and a record low of -5.6°C. This morning’s chill is definitely on the colder end of the scale, but the coming highs will swing us back toward the upper historical range in a hurry.
Soo Weather Trivia
Sault Ste. Marie’s microclimate—thanks to its proximity to both Lake Superior and Lake Huron—can bring wild temperature fluctuations, especially in spring. This morning’s frost and Monday’s high of 25°C? Classic Soo weather whiplash!
