We had some serious rains on a recent camp outing. About 6 miles of rough road with wash-outs and pot holes full of water so you never knew how deep they were! A slow go trying to pick a best line through the mess was worth it.
We too left our chairs out during one of the downpours but they dried when a bit of sun poked through for a few hours.
Was a nice place to sit and watch the rain.