Water temps on the river I fish has been holding at 57 degrees during the daytime. I'm not sure what the water temp. is at night but would assume it drops at night and rises during the day. In the daytime the "air" temps have been in the 70's and at night "air" temps are in the mid 40's. I was wondering during this late fall period is night fishing still the preferred time for Flatheads? OR would the daytime be better, seeing how it is warmer outside.