I hate to be the one who always doing this... but I really get tired of bad (and very expensive) advice is given here on hardware. Weather sealing is really important if your are going to be shooting a lot in highly humid environments for a long period of time - like the rain forest. It is relatively important in very very cold environments - like arctic conditions. But for conditions that 99% of the people who shoot here.... it is a nice to have, but not even close to a must have.
Just this last week I got back from a shoot in Colorado and New Mexico during the middle of a early cold snap that produced a huge storm... at times a near and total white out coming over the pass into Las Vegas New Mexico. At no point did I need to use a "weather sealed" camera. My weather sealing comes in two flavors - a Kata-bag rain gear hood and lens cover, and as back up, a hefty garbage bag. (Kata E-704 Lens Sleeve Kit E-704) And that is it. They protect lens, body, and my hands. All the gear cost less than $100.00, and works on all my cameras and even my larger lenses.
But that said, I filmed my sons football game last friday in a rain storm on Friday with a Sony a6300..... full game..... in the rain.... and both lens and camera are fine. A hand towel (or sleeve) to wipe off the front element was all I needed.
Even non weather sealed cameras with just a little care can survive and operate in 99.999 percent of conditions any person on this site would likely shoot in. Cameras are designed to be used in a lot of conditions. They are not delicate. Just some reasonable care and any camera can be used in just about any conditions - kids soccer games in the rain, going skiing, rain forest adventure in costa rica. This is just something most amateurs and semi-pros should put too much worry into. Don't spend money on things that will not have real impact on your images.
I'm not saying its not good to have.... but it should be really low on the priority list. Ergonomics, lenses, ISO and dynamic range.... way more important. Just based on my 40+ years of shooting.