I waited till after the rain went by and did a 4 mile tempo run. I did the first 2 miles about half marathon pace and then picked up the pace on the last 2. I'm glad I waited because the was about a 20 degree difference from before the rain and after the rain.
the work out was 10 mile tempo starting at 6:50 and knocking of 10 sec each mile. The temp was 90 degrees. I made it to mile 8 which was 5:38 and then I decied that it was enough for me and jogged it back easy the rest of the way.