43F with a headwind. Damp from rain last night.

I patched my rear tube yesterday. It had a little sliver of a hole in it. The tire itself was clean but I saw where something went through the tread. This morning the tire was rock hard. I got to work and it was soft. Now it's completely flat. Either the patch failed (would be the first time for me) or I picked up something else riding in. I'll wheel it over (one block) to the LBS and have them put a new tube in it.