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Changing weather patterns over the next few days.
Get ready for a heat wave, Chicago. The National Weather Service predicts a high near 81 on Sunday.
Temps this high aren't anything new for some suburbs that reached the mile marker this past Sunday, but Chicago hasn't seen 80 degrees since October.
The warm weather rolls in the same day as Bank of America's Shamrock Shuffle, one of the first official Chicago races of the year, and could come coupled with showers and thunderstorms later in the day.
The bad news? Chicagoans sick of damp, dreary weather will have to wade through a bit more rain and thunder later this week.
NBC Chicago's Andy Avalos says to expect continued cloudiness and chilly temps on Thursday and possible thunderstorms Friday evening.
Saturday warms up to the mid-70s with another round of thunderstorms possible before Chicago's heat wave settles in on Sunday.