Currently, I am running a semi-portable setup at home. I have a spool of 100ft of lmr400 coax outside in the porch where it free from most weather and rain. I only drag it out to the yard when I am setting up a portable antenna, and when I am not on the air it is in front porch. 

I am not going to have it out when it is pouring rain outside, but I did notice a lot condensation on the antenna and coax when I left it out overnight to work on night bands. 

Should I still imply some waterproof treatment or pl259 is water resistant enough? 
I think that warp the connector in raincoat tape and cut it open every setup and take down is a little hassle.