By CBS3 Staff

PHILADELPHIA (CBS) — Dangerous heat is expected to settle in the Philadelphia region as the workweek begins. Highs will reach the mid-to-upper 90s Monday to Wednesday — dipping near 90 on Thursday.

Dew points will be in the 70s and the Heat Index will hover between 100-105 at times.

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Pop-up storms are possible each day of the week, but the best chance will begin on Wednesday evening as a cold front finally approaches from the west.

This cold front will trigger periods of rain and storms Thursday and Friday.

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Temperatures will finally cool to near 90 Thursday and the low to mid-80s on Friday, ending the heatwave.

Fourth of July weekend will be more comfortable with highs near 80 but there is a chance of showers and storms both Saturday and Sunday.

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Stay with the Eyewitness News Weather Team for your most up-to-date forecast.