This is a reminder that Live Weather is unavailable DAILY between 2300Z and 0012Z. This is a widely known defect and has been logged. The team is currently investigating. To view any current issues with Live Weather, click here.
There is also a large discussion here: https://forums.flightsimulator.com/t/live-weather-down-every-day-from-2312-zulu-612p-est/481416