As of Dec. 31, I have recorded the weather data as reported by the National Weather Bureau in Cleveland for four complete years, 2004-07. The following is a list of year, total deviation of the actual lows and average low, and the average deviation per day for the year: 2004, +838 degrees, +2.29 degrees; 2005, +815 degrees, +2.23 degrees; 2--6, +1,324 degrees, +3.63 degrees; 2007, 1,075 degrees, +2.95 degrees.
Six times during 2007 the daily low was 20 degrees or more below average, but 12 times it was 20 degrees or more above average. Of the 12 months of 2007, only one, February, had a total deviation that was below average, -203 degrees. The other 11 months all had total deviations that were above average. The month with the greatest above average deviation was October, +285 degrees. That was a whopping +9.2 degrees per day.
The total deviation for the 1,461 days recorded was +4,052 degrees which comes out to an average daily deviation of +2.77 degrees for our low temperatures. Seems the good old days (nights) were a bit colder.Why?