I signed up for this years ride about 7 days out when the long range for cast was for 70 deg and partly cloudy. As the day approach every forecast got worse. I stupidly was unprepared for all the rain and cold. So I ended up only doing to 33 mile ride. This was a huge disappointment. But turning back was the right decision, because I was too cold for a 2 hour decent soaking wet and would have reach a hypothermic point.
However, I'm now more determined to complete this ride in the future and I won't take clothing preparation so carelessly for rides.