A cold front is slowly pushing south through North Dakota, but the keyword is slowly. Much of the state will once again record a very mild day.
The low pressure center near Pierre South Dakota will continue to move southeast during the day. Once that low moves far enough south, a stiff north wind (15-30 mph) will slowly develop from west to east across North Dakota. It will pull in cooler air for the next couple of days, but still close to seasonal averages. With a stiff wind developing tonight into Thursday, temperatures will likely fall a bit during the day tomorrow, meaning the highs may technically be at midnight tonight and even during the day tomorrow, especially eastern North Dakota will record cooler afternoon temperatures than what will be recorded during the morning commute.
Temperatures will recover a bit on Friday ahead of another cold frontal passage, but Saturday appears to be a day with falling temperatures an increasing wind and much colder air arriving during the day. The front may contain a bit of snow but most areas only getting a dusting with the exception of southwestern North Dakota that would have potential for 1-2 inches they way it looks right now. Then behind that front most of next week is expected to record below average temperatures with lows dropping below zero. The lack of snow cover will lessen the severity of the cold snap, yet -10s will be possible even in snow free locations.