Weather for Whitmanville Reservoir, MA - Whitmanville Reservoir, MA Weather, Current Weather in Whitmanville Reservoir, MA. Local weather report for Whitmanville Reservoir, MA, Local Whitmanville Reservoir, MA weather. Forecast for Whitmanville Reservoir, Massachusetts, Whitmanville Reservoir, MA weather forecast. Find your local Whitmanville Reservoir weather forecast. Whitmanville Reservoir, MA weather conditions.