BTW, you know May/June is late fall/early winter, right? It will be cold at night so bring a sleeping bag rated for freezing temps. This July is unusually cold;

https://www.yahoo.com/news/video/col...021310433.html

Not like winter up here since you are closer to the equator. Usually, it's sunny and I would cycle in shorts and a long sleeve tee shirt. You may have to switch into long pants and a jacket if the pass is really high or you cycle into the clouds so dress in layers. This cold snap is unusual but seems like the weather is getting crazy everywhere.