Prop up some blankets or tarps over the flowers and other plants to provide a bit of frost protection.
Heck, my Daffys are about four inches tall by now. Nothing seems to kill them. I would not worry to much about them coming up. As far as the rhubarb, have no idea. But I believe its a pretty hardy plant as well.
still looking for some more info
The freezing rain should not hurt your daffodils or rhubarb, Terri. I've seen daffodils blooming in snow many times. Things that come up early in the spring seem to have naturally built in defenses against the vicissitudes of weather.
Thanks Doug, I just never remember my grandparents who lived in New York having rhubarb starting to grown this early in the year. I know they die over winter and sttart again come spring...but then again, there is a big diffference between here and upstate NY. The freezing rain may not hurt the plants, but is sure does bother me. (old b/4 my time( -lol).