Some camera and some lenses are “weather sealed” (to some degree). Most entry-priced cameras are NOT weather-sealed.
You can buy a “rain sleeve” for the camera & lens if you don’t have a weather sealed camera & lens. You can get inexpensive disposable versions ... or high quality versions that are durable for years of use (but cost more).
I own a ThinkTank brand “Hydrophobia” lens sleeve. A couple of weeks ago I shot a bike race... in 38°F weather... and pouring rain (everyone was shivering). But one benefit of the rain-sleeve is that it has arm holes to insert your hands to control the camera while shooting. That means my hands were dry and warm (the rest of me was wearing a rain jacket). So even though I own a “weather sealed” camera & lenses... I appreciated the fact that my hands were dry & warm.
If you do have a “weather sealed” camera... keep in mind the idea of “seals” is gaskets on all body seams and buttons... and o-rings on all dials. But they are weather sealed against water that isn’t under pressure or force. It’s fine in rain. It’s not fine if submerged. It’s also not necessarily fine if the camera is blasted by water under force (I wouldn’t blast it with a water hose at high pressure).
Also, some weather-sealed lenses will tell you to thread a filter (e.g. clear glass) on the front of the lens to “complete” the weather-seal.
I’m not sure which camera model or lens models you have.
For Canon, none of the “Rebel” series bodies are sealed. The mid-range (e.g. 70D, 80D) are sealed. Also the high end bodies (5D series, 7D series, 1D series) are sealed (with even better weather-sealed treatment than the mid-range bodies).
None of Canon’s regular lenses are weather sealed... but many (possibly most) of the “L” series lenses are weather sealed. You’ll know it’s a weather sealed lens because you’ll see a silicone gasket on the end of the lens that mates to the camera. But DO read the instructions that came with the lens because Canon will specify if a filter should be used to “complete” the weather seal.
I am not familiar with which bodies & lenses have weather sealed treatment for other brands. But hopefully one of the members here can provide that info.