Motorcycle Ride to Nowhere

Stafford to Gatlinburg. Have you ever been on a motorcycle trip wishing it would rain? The ambient temperature gauge on my 2006 Street Glide reads 100 degrees. It is hot and sunny. I could see the dark rain clouds ahead. I can see heavy rain falling in the distance. The cold rain showers me for a few short minutes. I immediately took shelter by stopping under a gas station pump canopy. I check my handy dandy weather radar phone app. The app shows more rain ahead. I put on my rain suit with the idea that the rain is not going to interrupt my ride. I am back on the road. The ambient temperature gauge fell to just below the 90 degree mark. The cold rain feels pretty good cooling my skin as it pelts against my rain suit. In less than ten minutes the sun appears. The clouds are gone. The sky is clear ahead. That ambient temperature gauge on my dash shoots back up to 100 degrees. I still have my rain suit on. I begin to think, that radar app has been accurate in the past. Where is the r