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Sunny, pleasant Monday in Philadelphia region as warming trend begins. Here's the weather forecast.

After a rainy stretch of May weather, the first Monday of June – and second day of meteorological summer – is shaping up to be a beautiful one.

High temperatures will be around 75 degrees with lots of sunshine across the Delaware Valley. The morning starts slightly cooler, so grab a light jacket or hoodie before heading out the door, but expect to enjoy T-shirt weather by this afternoon.

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NEXT Weather forecast CBS Philadelphia

A warming trend kicks off this week as an upper ridge builds along the East Coast. Highs will climb to the low-to-mid-80s on Tuesday and into the mid-80s to near 90 by Thursday.

By late week, a more unsettled pattern develops as disturbances moves through the region. Shower and storm chances increase Friday into the weekend, with partly cloudy and warm conditions returning by Sunday.

Here's your 7-day forecast:

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CBS News Philadelphia

Monday: Mostly sunny. High 75. Low 53.

Tuesday: Sunny and very warm. High 84. Low 56.

Wednesday: Almost hot. High 89. Low 61.

Thursday: Now we're cooking. High 91. Low 66.

Friday: A rumble or two. High 88. Low 69.

Saturday: Chance for storms. High of 82, Low of 69.

Sunday: Partly cloudy. High 71, Low 64.

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