I highly recommend the Showers Pass Elite jacket. Although pricey, you can often buy it in sale for 20-30% off. In addition to being made of a breathable yet very water resistant fabric, it ventilates incredibly well due to various zippers, vents, etc. it's also available in bright colors that show up well in rain and dark. I live in the Southeast USA, and the SP is the only jacket I've owned that is wearable into the 60s F without getting totally sweaty. I like mine so much I wear it often in winter, even on dry days, as my main cycling jacket.