fair weather clouds, you are a friend of mine. i had my best run in a while, today. the old thermometer was stuck on the century mark; that's right-- an even 100 degrees as i headed out the door.
for the first half of the run old man sol was tucked in nicely behind a cloud and though the air temp was 100, without the radiant heat, with the sun in hiding i perceived the temp to be at least 10 degrees cooler. nice!