What, are you kidding me? They can't even predict the weather for the next day, let alone more than 15 days out! lol
Weather underground is the best one I've found. You can look at pics on your trail cams and go back on data from months past and forward and plot out patterns.
Excited for a trip. Not looking at wind direction precipitation hoping for cold weather and just wanted to see what they were saying. Not counting on it either