Week starts unseasonably chilly, with a big warm-up forecast by Wednesday.

Temperatures dipped into the 30s across parts of metro Atlanta early Monday, but forecasters are promising highs in the mid-80s by mid-week.

Readings before daybreak Monday ranged from 37 in Cartersville, 38 in Alpharetta and 39 in Dunwoody and Johns Creek to 44 in Marietta and 45 at Hartsfield-Jackson International Airport.

Channel 2 Action News meteorologist Karen Minton said skies will be sunny Monday through Wednesday, with highs climbing from 70 on Monday to 77 Tuesday and 86 Wednesday.

Overnight lows will be in the upper 40s Monday night, but will bottom out around 60 degrees the rest of the week, Minton said.

Atlanta’s normal high for mid-May is 79, the normal low 60.

Rain returns to Minton’s forecast Thursday and Friday, when the chance of showers will be 30 percent. Late week highs will be in the low 80s, with lows in the low 60s.

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