Absolutely go do it! Riding a bike is one of the simplest joys in life once you get the hang of it. I live ripping around doing all my errands on it. I have a reasonably nice vehicle but really I only drive in the worst of the winter, or to get out of town to do some activity. In the summer that activity is usually mountain biking, go figure!
Where do you live, Chilliwack? Lol. I get it though heat sucks. I’m in Kelowna and bike whenever I can, but I’m not showing up to dinner or a meeting drenched. Errands or casual hangs though sure why not. It is a little less soupy humid here so even 40° isn’t awful as long as you’re moving and have a breeze.