AccuWeather: Scattered Evening Storms. Possible Snow Sunday

PHILADELPHIA (WPVI) -- A good amount of sunshine earlier today helped boost temperatures into the low 70's today. But, a frontal boundary helped spark some scattered late afternoon thunderstorms with brief heavy rain, lightning and even small hail.

TONIGHT: An evening spotty shower gives way to a dry overnight with partly cloudy skies and a low of 47.

THURSDAY (ST. PATRICK'S DAY): Clouds will mix with some sun. It's breezy, but still relatively mild. There's a slight chance of a few pop-up, light showers during the afternoon and perhaps a rumble of thunder in far northern areas. Overall, however, this is a mainly dry, nice day with a high of 65.

FRIDAY: A cold front crosses the region with a few passing showers possible. The big change will be the arrival of gradually cooler air as we transition into the weekend. Look for clouds, some sun, a chilly breeze and a lower high of just 55.

SATURDAY: A brief break is in store with mostly sunny skies expected, but we're even cooler with a high of just 46.

SUNDAY: An area of low pressure will be swinging through the southeastern U.S. and will begin to strengthen as it rounds the corner and tries to come up the eastern seaboard as a coastal storm. With highs only in the low 40's and temps in the upper atmosphere well below freezing this could be a classic wet snow situation setting up for the first day of spring. The big question is how close to the coast is the storm. The closer in the heavier the precipitation. The farther offshore the lesser the impacts. There's still a small chance it stays completely off the coast. Still plenty of time to watch this, but the key timing looks to be Sunday afternoon into Sunday night. The high: 42.

MONDAY: It's a partly sunny day with gusty winds possible. Another spotty shower can't be ruled out. The high is 48.

TUESDAY: Look for partly sunny skies and another cool high of 50.

WEDNESDAY: Look for mostly cloudy skies with a bit if rain possible. The high is 59.