My first heavy rain since I started 6 weeks ago. 54°. I think I was wetter inside (sweat) my jacket and pants then outside. Even after sunrise it was dark. I was glad I had two rear flashers and a front flashing white light.
Haven't gotten a rain cover for my Topeak trunk bag yet but found tall kitchen trash bags fit just fine. Then found these Task Force 8-Pack 12" Canopy Tarp Ties at Lowes. Perfect size to stretch round the base of the trunk bag.