As rounds of flooding rain expand over the eastern part of the United States into the end of the week, a January thaw will allow temperatures to trend well above the historical average, and they may even set some daily records, AccuWeather meteorologists say. The last pocket of Arctic air in the lower 48 states will skip off the New England coast at midweek. While this cold air will linger just long enough to allow ice and snow into Wednesday in parts of New England, the temperature trend will i