FSMeteo question...

FSMeteo has been working great for me lately. However, last night I took a flight from CYYZ to CYWG. I was using the offline downloaded weather. I had set the destination airport and have it set so the weather doesn't change within 80 miles of the airport. This has always worked for me. Strangely this time as I descended the winds did not change in speed but they turned almost 180 degrees. I was cleared to land on my arrival runway with a 66Kt tailwind. Before I had learned about the set destination airport option it was common to get to final and then be told to fly downwind for the reciprocal runway which I can understand as the winds changed, but last night's approach/landing didn't seem to follow any rules.Has this happened to anyone else. If so, do you have any ideas why this happened or how to fix it?Thanks, Adam