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Data

Global surface temperature above 1850–1900 (NOAAGlobalTemp)

Global mean surface temperature for each complete year since 1850, as the difference from the 1850–1900 average of the same dataset.

Latest value

1.29°C

Global mean (90° S–90° N), 2025. Version 6.1.0.202608.

Global surface temperature above 1850–1900 (NOAAGlobalTemp) (degrees Celsius)

176 values from 1850 to 2025.
Show as a table
Global surface temperature above 1850–1900 (NOAAGlobalTemp), every value
PeriodValue (°C)Status
18500.02final
18510.11final
18520.14final
18530.10final
18540.12final
18550.09final
18560.04final
1857−0.02final
18580.03final
18590.10final
1860−0.03final
1861−0.08final
1862−0.15final
1863−0.08final
1864−0.06final
18650.12final
18660.05final
1867−0.04final
18680.04final
18690.09final
1870−0.01final
18710.00final
18720.01final
18730.00final
1874−0.06final
1875−0.04final
1876−0.07final
18770.24final
18780.27final
18790.00final
1880−0.02final
18810.07final
1882−0.01final
1883−0.01final
1884−0.11final
1885−0.07final
1886−0.10final
1887−0.18final
18880.04final
18890.11final
1890−0.15final
1891−0.07final
1892−0.15final
1893−0.16final
1894−0.17final
1895−0.06final
18960.04final
18970.05final
1898−0.09final
18990.01final
19000.09final
19010.05final
1902−0.05final
1903−0.16final
1904−0.22final
1905−0.10final
1906−0.01final
1907−0.18final
1908−0.22final
1909−0.21final
1910−0.18final
1911−0.20final
1912−0.14final
1913−0.11final
19140.05final
19150.10final
1916−0.12final
1917−0.25final
1918−0.16final
1919−0.03final
1920−0.01final
19210.02final
1922−0.06final
1923−0.05final
1924−0.04final
1925−0.02final
19260.10final
19270.00final
19280.02final
1929−0.13final
19300.07final
19310.12final
19320.06final
1933−0.07final
19340.07final
19350.04final
19360.08final
19370.17final
19380.18final
19390.19final
19400.33final
19410.38final
19420.25final
19430.25final
19440.38final
19450.30final
19460.16final
19470.17final
19480.13final
19490.13final
19500.04final
19510.15final
19520.21final
19530.27final
19540.09final
19550.04final
19560.00final
19570.22final
19580.26final
19590.25final
19600.16final
19610.24final
19620.21final
19630.23final
1964−0.01final
19650.09final
19660.13final
19670.16final
19680.12final
19690.26final
19700.21final
19710.09final
19720.22final
19730.34final
19740.12final
19750.16final
19760.11final
19770.37final
19780.28final
19790.36final
19800.46final
19810.50final
19820.32final
19830.49final
19840.34final
19850.31final
19860.39final
19870.50final
19880.55final
19890.43final
19900.59final
19910.57final
19920.40final
19930.43final
19940.49final
19950.63final
19960.51final
19970.65final
19980.78final
19990.57final
20000.57final
20010.69final
20020.76final
20030.77final
20040.70final
20050.83final
20060.80final
20070.79final
20080.69final
20090.81final
20100.88final
20110.77final
20120.80final
20130.83final
20140.90final
20151.05final
20161.17final
20171.10final
20181.03final
20191.16final
20201.18final
20211.03final
20221.06final
20231.34final
20241.42final
20251.29final
Calculated by Environment Dashboard from NOAA National Centers for Environmental Information NOAAGlobalTemp version 6.1.0.202608 (Huang, Yin, Menne & Vose), doi:10.25921/vvaa-wq11, accessed 2026-10-04. Changes: annual anomalies re-based from 1991–2020 to the 1850–1900 mean of the same dataset; 2026 left out as a partial year. Public domain (work of the US federal government).

Where it comes from

Producer
NOAA National Centers for Environmental Information · NOAA Global Surface Temperature (NOAAGlobalTemp), version 6.1
Version
6.1.0.202608
File
https://www.ncei.noaa.gov/data/noaa-global-surface-temperature/v6.1/access/timeseries/aravg.ann.land_ocean.90S.90N.v6.1.0.202608.asc
Fetched
2026-10-04 (automatically), 11,505 bytes
Fingerprint
sha256 ce98047f148087859faa7996987c2b717baad14ce0e58cbe6a4b6c41d9f2a666ETag "2cf1-65afaa2263240" · Last-Modified Tue, 08 Sep 2026 15:46:09 GMT
Copies
No Wayback copy recorded yet.Our copy of the exact file
Cite the producer
Huang, Boyin; Yin, Xungang; Menne, Matthew J.; and Vose, Russell S. 2026. NOAA Global Surface Temperature Dataset (NOAAGlobalTemp), Version 6.1. Areal-average time series. NOAA National Centers for Environmental Information. https://doi.org/10.25921/vvaa-wq11. Accessed 2026-10-04.
Producer
NOAA National Centers for Environmental Information · NOAA Global Surface Temperature (NOAAGlobalTemp), version 6.1
Version
6.1.0.202608
File
https://www.ncei.noaa.gov/data/noaa-global-surface-temperature/v6.1/access/timeseries/aravg.mon.land_ocean.90S.90N.v6.1.0.202608.asc
Fetched
2026-10-04 (automatically), 220,480 bytes
Fingerprint
sha256 76cc32238bcb7d058703841f8a26731594a03e3d07daf41b82736c06e96f42dcETag "35d40-65afaa244b6c0" · Last-Modified Tue, 08 Sep 2026 15:46:11 GMT
Copies
No Wayback copy recorded yet.Our copy of the exact file
Cite the producer
Huang, Boyin; Yin, Xungang; Menne, Matthew J.; and Vose, Russell S. 2026. NOAA Global Surface Temperature Dataset (NOAAGlobalTemp), Version 6.1. Areal-average time series. NOAA National Centers for Environmental Information. https://doi.org/10.25921/vvaa-wq11. Accessed 2026-10-04.
Producer
NOAA National Centers for Environmental Information · NOAA Global Surface Temperature (NOAAGlobalTemp), version 6.1
Version
6.1.0.202608
File
https://www.ncei.noaa.gov/data/noaa-global-surface-temperature/v6.1/access/timeseries/aravg.ann.land_ocean.60N.90N.v6.1.0.202608.asc
Fetched
2026-10-04 (automatically), 11,505 bytes
Fingerprint
sha256 19f707255a4fe95bc7da1a93584541cc75668828067423825c7eff1c6708f5b2ETag "2cf1-65afaa2263240" · Last-Modified Tue, 08 Sep 2026 15:46:09 GMT
Copies
No Wayback copy recorded yet.Our copy of the exact file
Cite the producer
Huang, Boyin; Yin, Xungang; Menne, Matthew J.; and Vose, Russell S. 2026. NOAA Global Surface Temperature Dataset (NOAAGlobalTemp), Version 6.1. Areal-average time series. NOAA National Centers for Environmental Information. https://doi.org/10.25921/vvaa-wq11. Accessed 2026-10-04.
Producer
NOAA National Centers for Environmental Information · NOAA Global Surface Temperature (NOAAGlobalTemp), version 6.1
Version
6.1.0.202608
File
https://www.ncei.noaa.gov/data/noaa-global-surface-temperature/v6.1/access/timeseries/00_Readme_timeseries.txt
Fetched
2026-10-04 (automatically), 1,032 bytes
Fingerprint
sha256 2595d84ca80c3418bb55330e36356c3b1770d40832de4aa9b1c67d1895ec189fETag "408-65afaa02ea800" · Last-Modified Tue, 08 Sep 2026 15:45:36 GMT
Copies
No Wayback copy recorded yet.Our copy of the exact file
Cite the producer
Huang, Boyin; Yin, Xungang; Menne, Matthew J.; and Vose, Russell S. 2026. NOAA Global Surface Temperature Dataset (NOAAGlobalTemp), Version 6.1. Areal-average time series. NOAA National Centers for Environmental Information. https://doi.org/10.25921/vvaa-wq11. Accessed 2026-10-04.

What was done to it

  1. Read the global (90°S–90°N) annual land-ocean anomaly of NOAAGlobalTemp v6.1.0, release 202608 (kelvin relative to 1991–2020, as the readme states; a difference of 1 K equals 1 °C). The error-variance columns are all -999 and are not used.

    Code: pipeline/src/envdash/transforms/temperature/noaaglobaltemp.py · code sha256 94517bf2e4124d31… · inputs ce98047f1480… 76cc32238bcb… 19f707255a4f… 2595d84ca80c…

  2. Confirmed one release: the global annual, global monthly and 60°N–90°N annual file names all carry v6.1.0.202608, and the monthly file's last month is 2026-08.

    Code: pipeline/src/envdash/transforms/temperature/noaaglobaltemp.py · code sha256 94517bf2e4124d31… · inputs ce98047f1480… 76cc32238bcb… 19f707255a4f… 2595d84ca80c…

  3. Left out 2026: the release runs to month 8 of 2026, so the annual file's value for it averages only those months. Earlier years are complete: the file names give the month of the latest data.

    Code: pipeline/src/envdash/transforms/temperature/noaaglobaltemp.py · code sha256 94517bf2e4124d31… · inputs ce98047f1480… 76cc32238bcb… 19f707255a4f… 2595d84ca80c…

  4. Re-based to the dataset's own 1850–1900 mean: subtracted the mean of the 51 annual anomalies 1850–1900, -0.7768811568627451 K relative to 1991–2020 (exact decimal arithmetic on the printed values), from every year.

    Code: pipeline/src/envdash/transforms/temperature/noaaglobaltemp.py · code sha256 94517bf2e4124d31… · inputs ce98047f1480… 76cc32238bcb… 19f707255a4f… 2595d84ca80c…

What it covers

Geography
Global mean (90° S–90° N)
Baseline
1850–1900 mean of this dataset
Basis
NOAAGlobalTemp 6.1: NOAA GHCN monthly land-station temperatures merged with ERSST version 6 sea-surface temperatures, with gaps filled by an artificial neural network.
Unit
degrees Celsius (°C)