Another warm month. If one looks at Dr. Spencers graph, you can see that since 1999, the 13 month mean has not touched the 0 line. The last decade has been much warmer than any since the records have been kept. June 2010 UAH Global Temperature Update: +0.44 deg. C Roy Spencer, Ph. D. The global-average lower tropospheric temperature remains warm, +0.44 deg. C for June, 2010, but it appears the El Nino warmth is waning as a La Nina approaches. For those keeping track of whether 2010 ends up being a record warm year, 1998 still leads with the daily average for 1 Jan to 30 June being +0.64 C in 1998 compared with +0.56 C for 2010. (John Christy says that the difference is not statistically significant.) As of 30 June 2010, there have been 181 days in the year. From our calibrated daily data, we find that 1998 was warmer than 2010 on 122 (two-thirds) of them.