Weather for Water Bayou Reservoir, AR - Water Bayou Reservoir, AR Weather, Current Weather in Water Bayou Reservoir, AR. Local weather report for Water Bayou Reservoir, AR, Local Water Bayou Reservoir, AR weather. Forecast for Water Bayou Reservoir, Arkansas, Water Bayou Reservoir, AR weather forecast. Find your local Water Bayou Reservoir weather forecast. Water Bayou Reservoir, AR weather conditions.