THUNDER BAY — Weather Desk – A changeable three-day stretch is ahead for communities across Ontario’s Far North from Tuesday, Aug. 11 through Thursday, Aug. 13. Northern Ontario Three-Day Forecast: Aug. 11-13Sachigo LakeTuesday, Aug. 11: Mostly cloudy skies are expected, with occasional rain developing during the afternoon. High 19 C, with a low of 11 C overnight. Neskantaga First NationTuesday, Aug. 11: Sun and cloud will alternate through the day, with a couple of showers possible. It will remain cool, with a high of 17 C. The temperature could fall to 8 C overnight.