MARION, OH (MARION COUNTY NOW)—Residents of Marion County should prepare for a week of dramatic temperature swings and heavy rain, starting with record-challenging warmth before a cold front brings a chance of snow by Friday.

According to the latest forecast, Monday and Tuesday will remain unseasonably warm, with highs reaching 70 and 74 degrees, respectively. However, a powerful weather system is expected to move into the area Tuesday night, bringing widespread showers and thunderstorms.

The National Weather Service projects a 100 percent chance of precipitation on Wednesday, with rainfall amounts between three-quarters of an inch and one inch possible. Winds could gust as high as 32 mph.

A sharp cooling trend will follow, with Wednesday night lows dropping to 31 degrees. Thursday will struggle to reach a high of 43 degrees under mostly sunny skies. By Friday morning, a 40 percent chance of rain may mix with snow after 8 a.m. before gradually ending, as highs reach 52 degrees.

This Afternoon-Sunny, with a high near 70. Southwest wind 14 to 16 mph, with gusts as high as 26 mph.

Tonight-Increasing clouds, with a low around 56. South wind around 10 mph.

Tuesday-A slight chance of showers. Partly sunny, with a high near 74. Southwest wind 9 to 13 mph. Chance of precipitation is 20%.

Tuesday Night-A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 2am. Low around 63. South wind 8 to 14 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

Wednesday-Showers and possibly a thunderstorm. High near 71. Southwest wind 15 to 18 mph, with gusts as high as 32 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.

Wednesday Night-A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 2am. Cloudy, with a low around 31. Chance of precipitation is 50%. New precipitation amounts between a quarter and half of an inch possible.

Thursday-Mostly sunny, with a high near 43.

Thursday Night-Mostly cloudy, with a low around 34.

Friday-A chance of rain, mixing with snow after 8am, then gradually ending. Partly sunny, with a high near 52. Breezy. Chance of precipitation is 40%.

Friday Night-Partly cloudy, with a low around 29.