For a change, last week’s upper low ended up weakening considerably as it passed through our region, so instead of seeing several days with clouds and showers we only saw partly cloudy skies with only a few widely scattered showers and thunderstorms.
For this forecast period, for the first time in a long while, it looks like we won’t have to deal with any upper lows, but this doesn’t mean there will not be any surface-based lows to deal with. The first area of low pressure will be moving across northern Manitoba during the middle of this week. This low will not directly affect us, as it will be too far to the north. What we will see is a cold front slide through behind this low on Thursday, bringing with it the chance of some thunderstorms.
Cool high pressure will then build in on Friday and Saturday. This will likely bring clear skies in the mornings and partly cloudy skies in the afternoons. Daytime highs look to be in the low 20s, with overnight lows around the 10 C mark. The weather models then show a weak low zipping through our region late on Sunday and into early Monday, bringing the chance for some showers.
Another larger area of high pressure is then forecast to move in by Tuesday, bringing plenty of sunshine along with nice seasonable late-summer temperatures. Expect daytime highs to be in the low to mid-20s with overnight lows in the low to mid-teens. This high will slowly pull off to the east by the second half of next week. Combine this with a developing area of low pressure to our west, and it looks like the latter part of next week will see warmer and more humid air move back in, along with the chance of more thunderstorms.
Usual temperature range for this period: Highs, 20 to 28 C; lows, 8 to 14 C.