We send off summer in the sunshine and unseasonably warm temperatures across Manitoba and northwestern Ontario. Monday is the last full day of the summer season before the arrival of the autumnal equinox early Tuesday evening. A ridge of high pressure over Manitoba is keeping the sky clear over southern regions Monday, with mild highs in the upper teens and low 20s in light southerly winds. Meanwhile, parts of northern Manitoba will be even warmer than in the south. Lynn Lake and Tadoule Lake—one of the northernmost regions—have the highest forecast highs in Manitoba Monday, expecting to soar to 23 C. The rest of the north won’t be far behind with highs in the upper teens and low 20s. Sunshine will also spill over into northwestern Ontario Monday, with more seasonable highs in the mid-teens in light winds. Monday evening would be a good time to cover your plants in the region. Environment and Climate Change Canada (ECCC) has issued a frost advisory for parts of northwestern Ontario. The weather agency cautions patchy frost is possible early Tuesday morning, adding damage to plants, trees and crops could result. There is also a risk of frost overnight in parts of southwestern Manitoba, including Brandon and Minnedosa. Sunshine and mild temperatures will return to Manitoba on Tuesday, for the last few hours of the summer season. You will notice much stronger south winds Tuesday. But ECCC said southerly winds will bring warm air and daytime highs are expected to reach five to 10 degrees above normal for most of this week.
