I wish I could say this with more confidence, but it is finally starting to look like we might see summer after all. The problem is that we will have to endure at least one more week of April weather in June.
It looks like Wednesday will be the nicest day of the week as cool high pressure builds into the region. Under the strong, early-summer sunshine we should see highs in the low 20s. Unfortunately by Thursday things are going to start to cool off. Low pressure is forecast to slowly slide southeastward out of northern Manitoba and then intensify as it moves into northwestern Ontario. This low will bring clouds and showers to central and eastern areas on Thursday and Friday while western areas will likely clear out on Friday.
Behind this low we will see a cold northeasterly flow coming off Hudson Bay, which will mean well-below-average temperatures over the weekend. I wouldn’t be surprised if we have a couple of frost warnings with the chance of seeing some record-breaking overnight lows.
Low pressure is then forecast to track by to our south late in the weekend and over the first half of next week. We shouldn’t see any precipitation from this low but it will act to trap any real heat to our south. If the skies can stay clear we should see slowly warming temperatures during this period; if we see more clouds from this system, we will remain below average.
Finally, there is a glimmer of hope for the second half of next week and hopefully beyond. The models point toward a northward shift in the overall weather pattern, meaning a possible turn to summerlike temperatures and thunderstorms.
Usual temperature range for this period: Highs: 18 to 27C. Lows: 5 to 13C.