If weather is bad, WWII r planes don't fly.
Planes don't fly why have a game.
HiTech
Maybe not hurricane style, but just any sort of weather.
1. Variable visibility in different areas of the map based off of current weather conditions in your area
2. Calm to Light wind, with varying direction based off location of the map to follow a similar weather pattern in real life.
3. Variable weather across the entire map... there may be a 20-30-40-50 mile stretch of "bad" weather on a front moving across the map where aircraft would avoid, or have to 'go around'--- wouldn't expect it to cover the entire canvas. Just scale it as appropriate.
4. Variable cloud layers in different areas of the map based off of conditions.
5. Just because it's 'raining' below the clouds doesn't mean it's not clear skies above it.
Just some thoughts, we have some pretty big maps.