If you’re starting the Labour Day long weekend early on Friday in Manitoba, you’ve chosen well. Unseasonably warm temperatures are soaring across the entire province. Daytime highs will reach the mid-20s in most regions. However, humidity is also rising across Manitoba Friday before it’s expected to climb even higher over the long weekend. Expect humidex values in the upper 20s and low 30s in the south on Friday and in the mid- to upper 20s in the north. By Saturday, brace for humidex values in the mid- to upper 30s across southern regions. Until then, most of Manitoba will see sunshine or a mix of sun and cloud Friday, under the influence of a broad ridge of high pressure. According to Environment and Climate Change Canada, the same ridge extends over northwestern Ontario Friday, but skies over the region will remain cloudy. Afternoon temperatures will reach the low 20s. With rising heat and humidity in southern Manitoba comes the risk of thunderstorms over the long weekend. Potential nocturnal thunderstorms could wake up southwestern Manitoba overnight into Saturday morning. Saturday and Sunday will bring a mix of sun and cloud to Winnipeg, with a risk of thunderstorms on Sunday. Labour Day Monday will bring the long weekend to a soggy end, with showers and possible thunderstorms.
