This winter put the brrr in Febrrruary.The monthly average temperature in Cedar Rapids was 10.4 degrees — 14 degrees below the normal average, according to the National Weather Service. The monthly average in Iowa City was 14.4 degrees — 11.9 degrees below the normal average.The winter so far also has registered colder than normal for both cities, though not as severely as in February alone.From December through the end of February, the average temperature in Cedar Rapids was 19.5, or 2.9 degrees lower than normal.