St. Theresa Point, Manitoba is in for a stretch of warm late summer weather that should make it easy to spend time outdoors this week. Environment Canada is calling for daytime highs between 19°C and 23°C through Saturday, August 29, 2026, with mostly sunny skies for much of the week before a mix of sun and cloud arrives Saturday.
No weather alerts are in effect for the community. On Monday afternoon, conditions at Island Lake Airport were sunny with a temperature of 22.9°C, light south winds at 11 km/h, and 41 percent humidity.
Nighttime temperatures will cool to between 8°C and 15°C, with Thursday night expected to be the chilliest at 8°C. The forecast aligns with typical seasonal conditions: Environment Canada lists climate normals of a 19°C daytime high and 10°C overnight low for this period.
Tuesday brings a slight change, with mainly cloudy skies and a 30 percent chance of showers and a high of 21°C. But sunshine returns Wednesday through Friday, with highs of 20°C, 19°C, and 21°C respectively, followed by a mix of sun and cloud and a high of 20°C on Saturday. The Weather Network also reports hazy conditions and a 40 percent chance of precipitation for Monday.
St. Theresa Point is a fly-in Oji-Cree First Nation community on the western shore of Island Lake, about 650 kilometres northeast of Winnipeg. The forecast gives residents a good chance to enjoy outdoor activities before cooler fall weather arrives.
