It's 6 am Tuesday in Las Vegas and the temperature is 84 degrees with 28% humidity. It's "only" supposed to reach 109 degrees by mid afternoon. The fly in the ointment is the return of the monsoon season with possible rain and thundershowers for Thursday through Sunday. It's really nasty (and dangerous) to ride in the rain due to all of the accumulated road grime when it first rains. The valley was built without underground storm basins to carry away the rain. If the rain is intense, the streets will flood. Through the past two decades the county has built many flood detention basins to slow down the flow of water to Lake Meade. It used to be common to see pictures of people stranded on the top of a vehicle in one particular railroad underpass. Not so much lately. It's a good idea to stay home if thunderstorms are imminent.