Much of this week will be dominated by a large anomalously cold upper-level low moving eastward into the Hudson Bay and Southeast Canada. After a dry day today, a couple of disturbance rotating underneath this upper-level low will be moving across the region on Tuesday and Wednesday. This could give us more clouds and chance for a few showers or thunderstorms each day. Then high pressure will settle in for more fair weather late in the week. But some troughiness will still linger over Southeast Canada and the Northeast through this weekend, with another shower and thunderstorm threat. A more technical discussion for this week is below.
For the rest of this afternoon, temperatures will remain in the lower the middle 80s for much of the region with west to southwest winds and plenty of sunshine. A sea-breeze could develop near the shore and bring temperatures down a few degrees. Mostly clear skies will continue into this evening, then some clouds will be increasing during the overnight hours. These clouds will be from a disturbance passing north of the region, and also streaming northward from Tropical Storm Colin, which will track into the Southeast US later tonight and then out to sea later on Tuesday. Temperatures will drop into the upper 60s to lower 70s.
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