Good Stereo Speakers for outside use during BBQs, evening pot luck dinners etc

Used to set up my old American Acoustics party speakers outside for parties and just jamming while gardening.  Pretty large back yard for the city.  Not audiophile inside, but I was actually impressed how decent they sounded outside.  No reflections to worry about.  8" woofer actually does pretty tight bass and mids not horrible.  Tweeters a bit harsh but better outside.  Not too many parties lately and too lazy to pull them out for gardening.  But I should one of these days, maybe this weekend.  Have considered taking my big Snells outside but never got around to it.  Give it a try, you will probably be surprised.  It's a fun experiment at the very least.  

+1 on the JBL bluetooth speakers.  I have two of the Charge and they don't sound bad at all so I just use those lately.   

+1 Klipsch 

+1 for @mapman ‘s suggestion for Polk Atrium 6’s. I’ve had them outdoors for 5 years, without a problem. I actually enjoy their sound regardless of being an outdoor speaker.
I also use a pair of Definitive Technologies AW6500’s as well. Really impressive sound, weatherproof build. a bit awkward to setup if you’re going to be moving them back and forth though. 

Two I have heard at parties that I like.  JBL portable.  List before you dismiss them.  I was shocked at how good they were for the price.  Sonos ... the bigger ones, don’t remember the model number.  They don’t have that many models so the bigger one will be obvious.

In 1997 I bought a set (5) of the BIC speakers. Plastic ported pods. 5-1/4” MW, polypropylene with butyl rubber surrounds, 1” polycarbonate tweeters. They’ve been doing duty outside since 1998. 22 years! Still sound and work great! Nice bass, but not subwoofer bass. I have 2 on the pool deck, 2 on the patio deck. I use the headphone out connections from a portable CD player to a weather-tight Pyle amp. Cheap. But sounds great for non-critical outside music. 50 Watts/channel is plenty of power for outdoors.