Bitterly cold temperatures and dangerously cold wind chills are forecasted for this weekend and next week. The National Weather Service forecast for Friday (Dec. 29) afternoon through Thursday (Jan. 4) includes low temperatures between 10 F and -5 F; dangerous wind chill values are expected to be as cold as -15 F to -30 F. The coldest temperatures are expected to be Sunday night through Monday night. The coldest periods are expected during the early hours of each of those days.