This evening, low pressure will be departing to the northeast and gradual clearing will ensue. A few showers are possible through about mid-evening. As skies clear, high pressure should build into the region and this should allow not only skies to clear, but even cooler air to take hold. If the winds do lighten up and skies do clear decently, some frost may form in the colder locations in the North and Western suburbs and the Pine Barrens. However, at this time, some factors may mitigate that potential and thus the best chance for frost will be in the Poconos where a frost advisory has been issued. Overnight lows will be in the upper thirties to mid-forties across the region. The warmest locales will be the city itself and areas along the warmer coastal waters. There could be some moisture trapped near the surface allowing for some patchy fog.
Another piece of energy is on schedule to impact our region later Monday into Tuesday. The best chances for showers will be south and east of Philadelphia although it is not out of the question that all areas could deal with patchy drizzle or a shower. The extensive clouds on Monday Night into Tuesday appear to limit the potential for frost, although cloud coverage needs to be monitored closely.
On Wednesday, another cold front moves through our region. It still appears it will have the best energy and greatest shower coverage to our north. However, a few widely scattered showers cannot be ruled out in our region. Thursday and Friday look to be gorgeous days across our region with ample sunshine. Another weak front on Friday could create a few clouds at best. The next wet day appears to be on Sunday. With the threat for rain, later forecasts may have to adjust temperatures downward on Sunday.
There will be additional opportunities for scattered frost mid to late week, so this may be one of the last weeks to get fruit and vegetables from your garden.