Maybe not exactly what you're looking for, but I got this:https://www.costco.com/feit-electric-48'-led-filament-string-light-set.product.100405061.html
I've used it with rain. Worked fine.
We used these for 2 years now in pouring rain without any problems.https://www.sunlite.com/p-20609-85315-su.aspx?source=similarproducts.88360-su&position=12
Also see the thread where I posted that there's more options there
there was a DDF posting for a deal recently for 4 of those for $50
Linkable LED Utility Shop Light 4ft 4800 Lumens Super Bright 40W 5000K Daylight ETL Certified LED Garage Lights Fixture Durable LED Fixture with Pull Chain Mounting and Daisy Chain Hardware Included https://www.amazon.com/dp/B01MS3X0IR/ref=cm_sw_r_cp_apa_i_tmwWDbRKC7E17