I don't take any chances with my patio awning, and roll it up anytime I'm not around and there's a possibility of storms. But do I need to be as cautious with window awnings? They're smaller and...
Try to "guesstimate" the weather best you can. We put ours up if it looks to be really windy, but most often, the window awnings are down even if we roll up the main awning. Our main awning has a setting to automatically roll up based on wind and we set it on medium. We have come back and found it rolled up.