MEAN TEMP 004020 19100101 20101231 MARBLE BAR COMPARISON 30 years 1910-1939 = 27.1 / 30 years 1981-2010 = 27.9 / Increase of .8 degrees C 19100101 19101231 27.9 19110101 19111231 27.9 19120101 19121231 27.4 19130101 19131231 26.9 19140101 19141231 28.0 19150101 19151231 27.3 19160101 19161231 27.4 19170101 19171231 26.3 19180101 19181231 27.1 19190101 19191231 27.5 19200101 19201231 26.5 19210101 19211231 26.7 19220101 19221231 26.9 19230101 19231231 26.6 19240101 19241231 27.6 19250101 19251231 26.3 19260101 19261231 27.4 19270101 19271231 27.0 19280101 19281231 27.8 19290101 19291231 26.8 19300101 19301231 27.3 19310101 19311231 26.3 19320101 19321231 27.0 19330101 19331231 26.7 19340101 19341231 26.0 19350101 19351231 26.5 19360101 19361231 28.0 19370101 19371231 27.0 19380101 19381231 28.0 19390101 19391231 26.4 19400101 19401231 27.4 19410101 19411231 27.5 19420101 19421231 26.2 19430101 19431231 26.2 19440101 19441231 27.9 19450101 19451231 27.3 19460101 19461231 27.0 19470101 19471231 27.2 19480101 19481231 26.5 19490101 19491231 26.2 19500101 19501231 27.0 19510101 19511231 27.8 19520101 19521231 27.3 19530101 19531231 27.6 19540101 19541231 27.9 19550101 19551231 26.8 19560101 19561231 26.8 19570101 19571231 28.0 19580101 19581231 27.5 19590101 19591231 99999.9 19600101 19601231 27.0 19610101 19611231 27.2 19620101 19621231 99999.9 19630101 19631231 26.6 19640101 19641231 27.1 19650101 19651231 27.8 19660101 19661231 26.1 19670101 19671231 26.6 19680101 19681231 26.1 19690101 19691231 27.1 19700101 19701231 27.5 19710101 19711231 26.5 19720101 19721231 27.8 19730101 19731231 27.8 19740101 19741231 26.6 19750101 19751231 27.5 19760101 19761231 26.8 19770101 19771231 28.0 19780101 19781231 26.7 19790101 19791231 27.9 19800101 19801231 27.8 19810101 19811231 27.6 19820101 19821231 27.3 19830101 19831231 27.5 19840101 19841231 26.8 19850101 19851231 27.5 19860101 19861231 27.8 19870101 19871231 27.6 19880101 19881231 27.9 19890101 19891231 27.9 19900101 19901231 28.7 19910101 19911231 29.0 19920101 19921231 28.2 19930101 19931231 28.0 19940101 19941231 28.5 19950101 19951231 27.3 19960101 19961231 28.7 19970101 19971231 27.5 19980101 19981231 28.8 19990101 19991231 26.8 20000101 20001231 99999.9 20010101 20011231 99999.9 20020101 20021231 27.8 20030101 20031231 28.0 20040101 20041231 27.8 20050101 20051231 99999.9 20060101 20061231 99999.9 20070101 20071231 99999.9 20080101 20081231 99999.9 20090101 20091231 99999.9 20100101 20101231 99999.9