BMG Adventure 2 jacket...
I'd check it out. I have it and love it. 279 bucks and it has great armor, vents well, comes with a rain shell that can be worn over or under , hydration pack and a ton of other features.. I just did a ride in Arizona today at 95 degrees and was comfortable in the dirt and at speed. I have had it into the mid 50's temps and with the proper under -layers it was great. Tons of features and quality for the money..