Sault Ste. Marie will enjoy bright, warm weather on Friday with temperatures reaching about 24°C, although pockets of morning fog should clear early in the day. Winds are expected to shift to the northwest and pick up to roughly 20 km/h close to midday. The humidex will make it feel slightly warmer, near 27, and the UV index is forecast to be 7 (high), so sun protection is recommended during peak hours.
What to expect through the weekend
The pleasant start to the weekend will give way to warmer highs on Saturday, followed by an increased chance of rain. Saturday should top out near 26°C with the humidex rising toward 30, keeping the day feeling muggy. Cloud cover will increase Saturday night and there is about a 30 percent chance of showers overnight.
Sunday looks cooler and cloudier, with the high dropping to around 21°C and the likelihood of showers rising to about 60 percent. Overnight into Sunday night, temperatures should fall to roughly 14°C with showers still possible on the 40 percent scale, signalling a transition to a more unsettled pattern for early next week.
Early next week: unsettled with periodic showers
Expect a mix of sun and cloud on Monday with a high near 23°C and a 30 percent chance of showers. Monday night will be mainly cloudy with a low about 12°C. Tuesday remains cool and damp, with a high of about 22°C and an estimated 40 percent chance of showers during both day and night.
Midweek brings the highest odds of precipitation in the period shown: Wednesday’s high is forecast near 20°C with showers likely at around 60 percent during the day and continuing into the night when the low should be near 11°C. By Thursday the pattern nudges back toward a mix of sun and cloud with a small chance (40 percent) of showers and a high around 23°C.
Practical impacts and safety notes
- With a UV index of 7 on Friday and Saturday, apply broad-spectrum sunscreen, wear a hat and seek shade during midday hours.
- The humidex near 30 on Saturday could make outdoor activity feel oppressive for some; stay hydrated and limit exertion during the warmest part of the day.
- Showers becoming more likely from Sunday into midweek may affect weekend plans and travel—carry a rain layer and check updated forecasts before setting out.
Below is a concise table of the forecast through Thursday to help with short-term planning.
| Day | High | Low | Precipitation Chance | Notes |
|---|---|---|---|---|
| Friday | 24°C | 13°C | Nil | Sunny; NW winds ~20 km/h; Humidex 27; UV 7 |
| Saturday | 26°C | 16°C | 30% (night) | Sunny; muggy, humidex ~30 |
| Sunday | 21°C | 14°C | 60% (day) | Cloudy with likely showers |
| Monday | 23°C | 12°C | 30% | Mix of sun and cloud |
| Tuesday | 22°C | 12°C | 40% | Cloudy with showers possible |
| Wednesday | 20°C | 11°C | 60% | Cloudy with likely showers |
| Thursday | 23°C | — | 40% | Mix of sun and cloud |
This forecast provides a snapshot through next Thursday. Weather conditions can change; for any travel or outdoor events, consult local updates and watches or warnings that may be issued by meteorological services.
