DENVER (KDVR) — Afternoon thunderstorms and cooler temperatures are in Denver’s weather forecast Tuesday, ahead of a hot end to the week. Weather tonight: Partly cloudy, mild Monday night, a few clouds will linger. Low temperatures will fall to the upper 50s, which is about 5 degrees above normal for this time of year. FOX31 Newsletters: Sign up for weather alerts from the Pinpoint Weather team Weather tomorrow: Afternoon thunderstorms, cooler Tuesday will start off with increasing clouds.