Night time temperatures are getting cooler and cooler as nighttime lengthens. Overnight temperatures are regularly dipping into the 40s and then popping back into the 70s. That cycle will continue this week with three exceptions: today, Wednesday and Friday.

This morning's satellite image.

Today we'll see the temperature reach the 80-85 range (73-78 at the higher elevations) under mostly sunny skies. Clouds will thicken tomorrow and a few showers will move in from the southwest after 4pm. Look for slightly cooler readings tomorrow at 74-79. The showers will be more likely tomorrow night and Wednesday morning, then they will taper off Wednesday afternoon but not early enough to keep Wednesday from being a chilly day at 58-63 degrees for the highest temperature.

We'll be right back to the mid 70s Thursday but only 64-69 on Friday as clouds hover near a cold front. Hurricane Igor will miss the U.S. but be caught up in a large low over eastern Canada. The low will draw down air from the Arctic and we'll see an increasing threat of frost and freezing temperatures over the next 2 weeks. So far, it is not looking like an exceptional cool down as we head through the first month of Autumn. October may bring a couple of unusually cold days, however.