A dry well will most often come back with some rain or snow.
When a well goes dry it does not always mean that it will never produce water again and sometimes the well going dry is from lack of rain, snow or other precipitation and due to drought conditions.
If you live in an area that gets little rain or precipitation and your well is 50 feet deep or less then it is more likely to go dry the more you pump water out of it.
Deeper wells can also go dry but are less likely to go dry from drought.
It's best to have a 100 foot or deeper well to have access to plenty of water and in locations that get plenty of rain the well will likely never go dry.
Shallow wells are more prone to go dry than deeper wells are.
In some cases a well may also go dry and only need hydro fracking to allow more water through.
And sometimes a well simply needs to be drilled deeper to access more water.
If your well goes dry then sometimes just waiting for it to recover can be good enough but if you have the money and need to drill deeper or hydro frack the well then that is another option.
If your well is deep enough to allow you to place the pump deeper than that is also another option.