No one is talking about a specific day's weather. example: January 1, 1944. The actual weather will pick up the weather for the day that you will be flying regardless of the mission time. It will pick up the weather the moment you have it synchronized with 10, 20 or XX minute intervals. After the specified time, the editor will make a new consultation. That simple. All civilian simulators do this. It shouldn't be difficult to have it in DCS.