My daughter has had her new car for 5 years and has lived in the same place all 5 years wo covered parking. She has moved her car 3 times due to storms coming in 5 years and all 3 times we never got the hail.
We can get hail storms in any month but really April-June and then again in Sept and October are when you need to pay close attention to the weather every day to see the rolling 5-10 day forecast.
We’ve never invested in a cover. Main reason is bc typically w a storm capable of that size hail you’re going to get 60-70 and sometimes 80-100 mph wind.
Please keep in mind these are typically not hail cores that are not 5 or 10 miles wide. They are blocks wide to a couple of miles but then travel mostly linear for 10 or more miles. Think a circle w a radius of maybe a mile dropping hail in a track of more than 10 miles.
As Duke Silver posted above our weather people are really good in the spring, summer and fall (not so much at predicting the number of inches of snow we will get).
I’ve lived in Tulsa and now OKC market and there are several weather people in both places that in the spring storm season get you right down to the block (so you can actually see where you live), the storm track down to the block and the expected time down to the minute. When it comes to hail, tornadoes or extreme wind they will track it and show you radar down to the intersection of roads even when it’s way out in rural areas they will show you county roads that aren’t even paved.