PHILADELPHIA (WPVI) -- This could be the warmest day until 2025, but temps drop dramatically over the next couple of days. SUNDAY: Another very mild day with partly sunny skies, high 81.

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Mostly clear. Winds northeasterly 15 to 25 km/h turning northerly 15 to 20 km/h in the late evening. Sun protection recommended from 9:20 am to 4:00 pm, UV Index predicted to reach 8 [Very High] ...

Mostly sunny. Slight chance of a shower. Winds east to northeasterly 15 to 25 km/h becoming light in the evening. Partly cloudy. Medium chance of showers. Light winds becoming easterly 15 to 25 km/h ...