The two rifles you have are really good rifles. You could be a real good one gun kind of hunter with either one in the east (shorter ranges).
I guess most of us have been caught in a few days of rain, drizzle, fog or wet snow and decided the rifle we carry is the wrong rifle.
When that happens to me, it not the metal work that concerns me. A paper towel and a warm room soon dries it out. My immediate problem is running out of toilet paper wiping the optics.
My #1 hunting rifles all have fixed or low power optics. So I have been taking a wet weather/back up rifle to camp. I have several to choose from, but they all feature a Williams Foolproof peep and a bright front sight. Some rifles have that bright red plastic light gathering front sight.
When deer hunting the back up rifle is a Winchester 94 in 30-30. When moose hunting it is a Rem 740 in 30-06 with a 20" barrel or a Win 94 in 356.
Nothing is more useless than the rifle you left at home. I went moose hunting once with a nice 300 Mag that got dropped in deep mud. To clean it I had to first swish it around in a lake and was not so sure for the rest of the week that it was ok. I had not brought a back up rifle with me. Now I take two back ups, because it is not unusual for someone else to have a problem or need differrent sights in the rain.
Maybe it is my military background, but wet weather has never struck me as a problem with wood and blue rifles. A paper towel and a oiling rag back in the camp is all it needs.
But, if this is the justification you need to buy a new rifle - go for it.
Picture follows of Williams sight installations. Many commercial rifles are already drilled and tapped for them. The plastic red sight is not all that great on the practice range on a sunny day, but in the bush it is outstanding.