Check the intake opening in the air filter system.
If it just has the short tube at the bottom, you"ll need to replace that, because during driving in the rain, it will suck up rain water, soak the filter element & maybe even get water into the engine, which will not be good.
Ford has a replacement tube for the air filter, one made longer which has a bend in it & will go up higher up under the hood to get out of the path of the rain.
Or you could just think up & make something yourself to mod the OEM system.
Neil