On my trip to Seattle and back (from Albany, Oregon, 525 miles round-trip, all electrons!) I charged once in a pretty good downpour at a Blink DC QC with no shelter. It was coming down hard but straight, so no wind or horizontal rain. No issues, other than me getting wet. I had to charge to get to the next stop so I was just a bit concerned...I also had no deadline so could have waited. But in the PNW, waiting for rain to stop (even in summer!) can take awhile.