Today was another cool day. The high recorded at Key field was only 68 degrees with our overnight low of 44 degrees. With our temperatures running about 2 degrees below what many models are projecting I expect that starting Tuesday we will see our highs dipping into the 60's and not hitting the 70's again till later this week.
A cold front is going to move through Tuesday but not much rain is expected, only a 20 percent chance. However, the air behind that cold front will be the coolest we've seen this fall. Afternoon highs on Wednesday are expect to be in the mid 60's with our overnight lows dipping into the 30's. Our overnight lows for much of the week will be in the mid to lower 40's.
Skies are going to be looking clear almost all week long once the cold front comes through. The lack of cloud cover at night causes temperatures to drop faster as the day time heat radiates out into space. Clouds act as an insulating layer, reflecting heat back down to earth at night, so without them temperatures drop fast.