Global Temperature

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Additional figures are on More Figures page.


Annual Temperature Ranking

With 1880-1920 Base Period

In this graph the base period is switched from our traditional 1951-1980 to 1880-1920 for the reasons given in "A Better Graph", but of course we continue to also produce our graphs with the 1951-1980 base period, as shown below. (Figure also in PDF Data through May 2018 are used for computing the means. last modified 2018/06/18, now with GHCN version 3.3.0 and ERSST v5.) The 12-month running mean data are available here.
With Our Traditional 1951-1980 Base Period from Here
(Some figures are available with 1880-1920 base period by clicking on a link.)

Below are maps of the mean surface temperature anomaly for the past month, the past three months, and the past 12 months. Regional weather patterns, apparent on the monthly time scale, tend to disappear in averages over longer time scales. In the chart in the lower right we show the 2013-2018 global land-ocean temperature anomalies.

Also in PDF, last modified 2018/06/18, now with GHCN version 3.3.0 and ERSST v5.

(a) Our traditional graph of the annual and 5-year running means of the global temperature, and (b) 12-month and 132-month (to minimize the effect of the 11-year solar cycle) running means on the right. Also in PDF. Click for figure wth1880-1920 base period
Data through May 2018 are used for computing the means. last modified 2018/06/18, now with GHCN version 3.3.0 and ERSST v5.)


Additional figures are on More Figures page.
Information in detail with tables and the original data sources are on NASA GISS temperature web pages.

Note 1: GHCN-M version 3 replaced version 2 in GISS temperature analysis because NOAA/NCDC no longer updates version 2. (since 2011/12/15)
GHCN v3.2.2 was replaced by v3.3.0 (since 2015/06/13, See NASA GISS Updates to Analysis page for details.)

Note 2: Ocean data were switched from HadISST1 + OI SST to ERSST. (since 2013/01/15)
Ocean data were switched from ERSST v3b to ERSST v4. (since 2015/07/15, corrected on 2015/07/19)
Ocean data were switched from ERSST v4 to ERSST v5. (since 2017/08/15)

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Information in detail with tables and the original data sources are on NASA GISS temperature web pages.