Most of May has been rather dry for all of Oklahoma. It looks like that might change some on Monday. A strong system will move in from the desert southwest, which will begin to move our direction late Sunday into Monday.
Rain chances will increase, but the severe weather threat looks rather limited. However, there is the possibility for some very heavy rainfall, which could lead to some flash flooding issues.
The good news is that most areas will pick up between a half of an inch of rainfall to potentially as much as 2" of rain.
After this event, we return to dry weather in the extended future.