January 2026: Weather Records and Temperatures Against Normal
January 2026 is settled: the figures use data received up to 9 November 2026, more than 45 days after the month ended, so the late station reports are in. This page compares January 2026 at weather stations worldwide with each station's own 1991 to 2020 January normal, ranks it against January of every year since 1951, and lists the weather records, events and storms of the month.
Data as of . Last revised (2026-11-09).
Key Facts
- January 2026 is settled; its data run to 9 November 2026.
- In January 2026, stations worldwide averaged +0.1 C (+0.3 F) against their 1991 to 2020 January normals, the 16th warmest January in 76 ranked years from 1951 to 2026.
- The mean daily maximum in January 2026 was -0.3 C (-0.5 F) against normal and the mean daily minimum +0.6 C (+1.0 F).
- Among the continents in January 2026, Oceania was the warmest against normal, at +0.7 C (+1.3 F), and North America the coolest, at +0.1 C (+0.3 F).
- The station furthest above its January normal in January 2026 was Nuuk (Greenland [Denmark]), at +7.8 C (+14.0 F); the furthest below was Ylitornio Meltosjarvi (Finland), at -10.2 C (-18.3 F).
- Of the 7,574 stations with a full month of rain data in January 2026, 39% had less than half their normal January rain and 3% had at least twice their normal; the median station had 62% of its normal.
- 25,346 weather records were set or tied in January 2026, including 12,010 record highs and 6,891 record lows of maximum and minimum temperature, and 146 all-time records.
- In January 2026, 62% of the daily temperature records were record highs (1.6 to 1 highs to lows), against an average of 67% for January in 2016 to 2025.
- 18 extreme weather events detected by this site overlapped January 2026.
- 11 named storms had a best track position in January 2026; 6 peaked at 64 kt (119 km/h, 74 mph) or more and 3 at 96 kt (178 km/h, 110 mph) or more over their lifetime.
- The Oceanic Nino Index for DJF 2026, the three months centred on January 2026, was -0.39: neutral, outside any El Nino or La Nina episode. NOAA's relative index (RONI) for the same season was -0.91.
- Monthly mean extent in January 2026: Arctic sea ice 13.11 million sq km (5.06 million sq mi), the 2nd lowest of 47 years for January; Antarctic sea ice 4.49 million sq km (1.73 million sq mi), the 13th lowest of 47 years for January.
- Carbon dioxide at Mauna Loa averaged 428.62 ppm in January 2026, 1.97 ppm more than in January 2025.
Temperature Against Normal
January 2026, against 1991 to 2020| Band | Stations on the map |
|---|---|
| More than 3 C (5.4 F) below normal | 185 |
| 1 to 3 C (1.8 to 5.4 F) below normal | 378 |
| Within 1 C (1.8 F) of normal | 805 |
| 1 to 3 C (1.8 to 5.4 F) above normal | 419 |
| More than 3 C (5.4 F) above normal | 85 |
| Area | Stations | Daily maximum vs normal | Daily minimum vs normal | Mean vs normal | Rank for January (1 is warmest) |
|---|---|---|---|---|---|
| World | 5,808 | -0.3 C (-0.5 F) | +0.6 C (+1.0 F) | +0.1 C (+0.3 F) | 16th of 76 |
| Africa | 14 | n/a | n/a | n/a | n/a |
| Asia | 185 | -0.6 C (-1.1 F) | +1.7 C (+3.1 F) | +0.6 C (+1.0 F) | 11th of 75 |
| Europe | 988 | n/a | n/a | n/a | n/a |
| North America | 4,226 | +0.2 C (+0.3 F) | +0.1 C (+0.1 F) | +0.1 C (+0.3 F) | 22nd of 76 |
| Oceania | 395 | +0.9 C (+1.6 F) | +0.5 C (+1.0 F) | +0.7 C (+1.3 F) | 4th of 76 |
| South America | 0 | n/a | n/a | n/a | n/a |
Stations are averaged in 5 degree grid cells and the cells are weighted by the cosine of their latitude. A value and a rank need cells holding at least 50% of the weight of every cell that has ever had data for January; n/a means fewer stations have reported so far. The world includes Antarctica and islands without a continent row.
| Year | Mean against the 1991 to 2020 normal |
|---|---|
| 1951 | -1.6 C (-3.0 F) |
| 1952 | -0.3 C (-0.6 F) |
| 1953 | -0.7 C (-1.2 F) |
| 1954 | -1.6 C (-2.8 F) |
| 1955 | -0.4 C (-0.7 F) |
| 1956 | -1.3 C (-2.4 F) |
| 1957 | -0.9 C (-1.6 F) |
| 1958 | -0.7 C (-1.3 F) |
| 1959 | -0.7 C (-1.2 F) |
| 1960 | -1.1 C (-2.0 F) |
| 1961 | -0.7 C (-1.3 F) |
| 1962 | -0.3 C (-0.5 F) |
| 1963 | -1.3 C (-2.3 F) |
| 1964 | -0.9 C (-1.7 F) |
| 1965 | -0.8 C (-1.4 F) |
| 1966 | -1.4 C (-2.5 F) |
| 1967 | -1.2 C (-2.2 F) |
| 1968 | -1.3 C (-2.3 F) |
| 1969 | -2.3 C (-4.1 F) |
| 1970 | -1.4 C (-2.5 F) |
| 1971 | -0.6 C (-1.1 F) |
| 1972 | -2.0 C (-3.7 F) |
| 1973 | -1.0 C (-1.7 F) |
| 1974 | -1.1 C (-1.9 F) |
| 1975 | 0.0 C (0.0 F) |
| 1976 | -0.7 C (-1.3 F) |
| 1977 | -2.2 C (-3.9 F) |
| 1978 | -0.9 C (-1.7 F) |
| 1979 | -1.5 C (-2.8 F) |
| 1980 | -1.0 C (-1.9 F) |
| 1981 | +0.0 C (+0.1 F) |
| 1982 | -1.2 C (-2.1 F) |
| 1983 | +0.2 C (+0.4 F) |
| 1984 | -0.6 C (-1.0 F) |
| 1985 | -1.4 C (-2.4 F) |
| 1986 | -0.3 C (-0.6 F) |
| 1987 | -1.2 C (-2.2 F) |
| 1988 | 0.0 C (-0.1 F) |
| 1989 | -0.4 C (-0.8 F) |
| 1990 | -0.3 C (-0.5 F) |
| 1991 | +0.1 C (+0.1 F) |
| 1992 | +0.0 C (+0.1 F) |
| 1993 | -0.1 C (-0.2 F) |
| 1994 | -0.3 C (-0.5 F) |
| 1995 | +0.2 C (+0.4 F) |
| 1996 | -0.5 C (-0.9 F) |
| 1997 | -0.4 C (-0.8 F) |
| 1998 | -0.1 C (-0.1 F) |
| 1999 | +0.1 C (+0.1 F) |
| 2000 | -0.6 C (-1.1 F) |
| 2001 | -0.3 C (-0.6 F) |
| 2002 | +0.6 C (+1.1 F) |
| 2003 | +0.1 C (+0.2 F) |
| 2004 | +0.0 C (+0.0 F) |
| 2005 | +0.4 C (+0.7 F) |
| 2006 | -0.6 C (-1.2 F) |
| 2007 | +1.2 C (+2.1 F) |
| 2008 | -0.6 C (-1.1 F) |
| 2009 | -0.1 C (-0.1 F) |
| 2010 | -0.5 C (-1.0 F) |
| 2011 | -0.6 C (-1.1 F) |
| 2012 | -0.4 C (-0.7 F) |
| 2013 | +0.1 C (+0.1 F) |
| 2014 | +0.0 C (+0.1 F) |
| 2015 | +0.6 C (+1.0 F) |
| 2016 | +0.4 C (+0.6 F) |
| 2017 | +0.4 C (+0.8 F) |
| 2018 | +0.3 C (+0.6 F) |
| 2019 | +0.6 C (+1.1 F) |
| 2020 | +1.0 C (+1.8 F) |
| 2021 | +0.1 C (+0.1 F) |
| 2022 | +0.4 C (+0.7 F) |
| 2023 | +0.4 C (+0.7 F) |
| 2024 | +0.6 C (+1.1 F) |
| 2025 | +1.0 C (+1.8 F) |
| 2026 | +0.1 C (+0.3 F) |
Furthest Above Normal
| Station | Country | Mean maximum | Maximum vs normal | Mean minimum | Minimum vs normal | Mean vs normal | Years of normal |
|---|---|---|---|---|---|---|---|
| Nuuk | Greenland [Denmark] | 3.2 C (37.8 F) | +8.2 C (+14.8 F) | -2.2 C (28.0 F) | +7.3 C (+13.1 F) | +7.8 C (+14.0 F) | 25 |
| Mackay Lost Rvr Rs | United States | 6.7 C (44.0 F) | +8.0 C (+14.4 F) | -6.1 C (21.1 F) | +7.3 C (+13.2 F) | +7.7 C (+13.8 F) | 29 |
| Biddle 8 SW | United States | 9.3 C (48.7 F) | +7.1 C (+12.7 F) | -2.9 C (26.8 F) | +7.7 C (+13.9 F) | +7.4 C (+13.3 F) | 29 |
| Powell Fld STN | United States | 8.2 C (46.8 F) | +8.0 C (+14.4 F) | -7.5 C (18.5 F) | +6.0 C (+10.8 F) | +7.0 C (+12.6 F) | 30 |
| Fontenelle Dam | United States | 3.0 C (37.3 F) | +6.4 C (+11.4 F) | -10.7 C (12.8 F) | +7.2 C (+13.0 F) | +6.8 C (+12.2 F) | 28 |
| Simpson 6 N - Wildhorse | United States | 1.3 C (34.3 F) | +4.3 C (+7.8 F) | -7.6 C (18.3 F) | +8.6 C (+15.4 F) | +6.4 C (+11.6 F) | 28 |
| Riverton | United States | 5.4 C (41.8 F) | +6.5 C (+11.8 F) | -9.4 C (15.1 F) | +6.0 C (+10.7 F) | +6.3 C (+11.3 F) | 25 |
| Boulder Rearing STN | United States | 2.9 C (37.3 F) | +5.8 C (+10.4 F) | -14.6 C (5.7 F) | +6.6 C (+11.9 F) | +6.2 C (+11.1 F) | 30 |
| Kljuchi | Russia | -6.3 C (20.6 F) | +5.7 C (+10.3 F) | -13.2 C (8.3 F) | +6.4 C (+11.4 F) | +6.0 C (+10.9 F) | 30 |
| Dinosaur Nm-Quarry Area | United States | 5.6 C (42.0 F) | +5.6 C (+10.0 F) | -7.6 C (18.3 F) | +6.2 C (+11.2 F) | +5.9 C (+10.6 F) | 26 |
Furthest Below Normal
| Station | Country | Mean maximum | Maximum vs normal | Mean minimum | Minimum vs normal | Mean vs normal | Years of normal |
|---|---|---|---|---|---|---|---|
| Ylitornio Meltosjarvi | Finland | -17.8 C (-0.1 F) | -10.6 C (-19.1 F) | -26.0 C (-14.9 F) | -9.7 C (-17.4 F) | -10.2 C (-18.3 F) | 30 |
| Grandad Oregon | United States | -1.0 C (30.1 F) | -9.6 C (-17.4 F) | -9.1 C (15.7 F) | -9.6 C (-17.3 F) | -9.6 C (-17.4 F) | 26 |
| Overtornea | Sweden | -16.8 C (1.7 F) | -10.1 C (-18.2 F) | -23.9 C (-11.0 F) | -8.5 C (-15.2 F) | -9.3 C (-16.7 F) | 26 |
| McCook Ridge | United States | -6.3 C (20.6 F) | -9.5 C (-17.1 F) | -17.0 C (1.4 F) | -8.9 C (-16.1 F) | -9.2 C (-16.6 F) | 28 |
| Savukoski Kk | Finland | -17.6 C (0.3 F) | -9.2 C (-16.5 F) | -26.2 C (-15.1 F) | -9.1 C (-16.5 F) | -9.2 C (-16.5 F) | 30 |
| Bardufoss | Norway | -10.5 C (13.0 F) | -6.6 C (-11.9 F) | -24.5 C (-12.1 F) | -11.4 C (-20.6 F) | -9.0 C (-16.2 F) | 30 |
| Ylinenjarvi_A | Sweden | -17.3 C (0.9 F) | -9.8 C (-17.7 F) | -25.5 C (-13.9 F) | -8.1 C (-14.6 F) | -9.0 C (-16.1 F) | 25 |
| Pello Kk Museotie | Finland | -17.6 C (0.3 F) | -10.1 C (-18.3 F) | -24.5 C (-12.0 F) | -7.8 C (-14.0 F) | -9.0 C (-16.1 F) | 30 |
| Rovaniemi Apukka | Finland | -16.9 C (1.5 F) | -9.5 C (-17.2 F) | -25.0 C (-13.1 F) | -8.0 C (-14.5 F) | -8.8 C (-15.8 F) | 30 |
| Muonio Alamuonio | Finland | -17.5 C (0.5 F) | -8.5 C (-15.3 F) | -27.0 C (-16.6 F) | -9.0 C (-16.2 F) | -8.8 C (-15.8 F) | 28 |
The lists use stations with at least 25 years behind their normal. One station does not stand for the area around it.
Countries
| Country | Stations | Mean vs normal |
|---|---|---|
| Greenland [Denmark] | 6 | +4.1 C (+7.3 F) |
| Turkey | 5 | +1.6 C (+2.8 F) |
| Kazakhstan | 9 | +1.4 C (+2.5 F) |
| Uzbekistan | 7 | +1.1 C (+1.9 F) |
| Australia | 387 | +0.8 C (+1.4 F) |
| China | 101 | +0.7 C (+1.2 F) |
| Puerto Rico [United States] | 13 | +0.6 C (+1.0 F) |
| Mongolia | 15 | +0.4 C (+0.8 F) |
| France | 40 | +0.3 C (+0.5 F) |
| Spain | 85 | +0.2 C (+0.4 F) |
| India | 15 | +0.1 C (+0.1 F) |
| United States | 4,204 | 0.0 C (-0.1 F) |
| South Africa | 6 | -0.1 C (-0.2 F) |
| Romania | 20 | -0.2 C (-0.4 F) |
| United Kingdom | 53 | -0.3 C (-0.5 F) |
| Switzerland | 8 | -0.5 C (-0.9 F) |
| Thailand | 12 | -0.5 C (-0.9 F) |
| Russia | 20 | -0.7 C (-1.2 F) |
| Netherlands | 30 | -1.0 C (-1.9 F) |
| Germany | 318 | -1.5 C (-2.7 F) |
| Austria | 5 | -1.6 C (-3.0 F) |
| Norway | 68 | -2.3 C (-4.1 F) |
| Sweden | 174 | -3.4 C (-6.2 F) |
| Finland | 118 | -3.9 C (-7.1 F) |
| Ukraine | 6 | -4.0 C (-7.3 F) |
| Poland | 5 | -4.2 C (-7.6 F) |
| Estonia | 16 | -5.1 C (-9.2 F) |
Rain Against Normal
7,574 stations, January 2026| Band | Stations on the map |
|---|---|
| Under 50% of normal | 684 |
| 50 to 90% of normal | 540 |
| 90 to 110% of normal | 157 |
| 110 to 200% of normal | 301 |
| 200% or more of normal | 95 |
| Under 50% | |
|---|---|
| 50 to 90% | |
| 90 to 110% | |
| 110 to 200% | |
| 200% or more |
Of the 7,574 stations with a full month of rain data in January 2026, 39% had less than half their normal January rain and 3% had at least twice their normal; the median station had 62% of its normal. A station month needs 28 days of rain data, because a total from fewer days is too low, and a normal of at least 10 mm.
Wettest Against Normal
| Station | Country | Rain | Normal | Percent of normal | Years of normal |
|---|---|---|---|---|---|
| Artesia 6S | United States | 79.0 mm (3.1 in) | 11.9 mm (0.5 in) | 666% | 30 |
| Benson 6SE | United States | 122.8 mm (4.8 in) | 18.8 mm (0.7 in) | 653% | 26 |
| Alcalde | United States | 67.6 mm (2.7 in) | 11.6 mm (0.5 in) | 581% | 27 |
| Mountainair | United States | 76.2 mm (3.0 in) | 14.2 mm (0.6 in) | 536% | 27 |
| Douglas (Bisbee) Intl AP | United States | 82.7 mm (3.3 in) | 16.3 mm (0.6 in) | 506% | 29 |
| Reus/Aeropuerto | Spain | 143.3 mm (5.6 in) | 29.6 mm (1.2 in) | 485% | 27 |
| Mundrabilla Station | Australia | 114.8 mm (4.5 in) | 24.1 mm (0.9 in) | 476% | 30 |
| Perpignan | France | 268.7 mm (10.6 in) | 60.1 mm (2.4 in) | 447% | 30 |
| Jornada Exp Range | United States | 45.8 mm (1.8 in) | 10.3 mm (0.4 in) | 446% | 27 |
| Anchorage Ted Stevens Intl AP | United States | 75.3 mm (3.0 in) | 19.2 mm (0.8 in) | 393% | 30 |
Driest Against Normal
| Station | Country | Rain | Normal | Percent of normal | Years of normal |
|---|---|---|---|---|---|
| Danewood Vale | Australia | 0.0 mm (0.00 in) | 132.6 mm (5.2 in) | 0% | 30 |
| Ostas I Hegra | Norway | 0.0 mm (0.00 in) | 101.0 mm (4.0 in) | 0% | 30 |
| Gillespie | Australia | 0.0 mm (0.00 in) | 90.8 mm (3.6 in) | 0% | 29 |
| Whitlands (Burder's Lane) | Australia | 0.0 mm (0.00 in) | 82.6 mm (3.3 in) | 0% | 27 |
| Dworshak Fish Hatchery | United States | 0.0 mm (0.00 in) | 77.6 mm (3.1 in) | 0% | 29 |
| Argadargada | Australia | 0.0 mm (0.00 in) | 77.3 mm (3.0 in) | 0% | 26 |
| Mount Skinner | Australia | 0.0 mm (0.00 in) | 73.8 mm (2.9 in) | 0% | 28 |
| Turlock #2 | United States | 0.0 mm (0.00 in) | 66.0 mm (2.6 in) | 0% | 27 |
| Trephina Gorge | Australia | 0.0 mm (0.00 in) | 64.8 mm (2.6 in) | 0% | 27 |
| Rutherglen | Australia | 0.0 mm (0.00 in) | 64.0 mm (2.5 in) | 0% | 30 |
Weather Records
25,346 set or tied in January 202625,346 weather records were set or tied in January 2026, including 12,010 record highs and 6,891 record lows of maximum and minimum temperature, and 146 all-time records. Every record of the month is in the records ledger for January 2026.
| Record high minimum temperature | |
|---|---|
| Record high maximum temperature | |
| Record low maximum temperature | |
| Record daily precipitation | |
| Record low minimum temperature | |
| Record snow depth | |
| Record daily snowfall |
| Daily | |
|---|---|
| Monthly | |
| All-time |
January Against the Ten Years Before
| Year | Record highs, percent of highs and lows |
|---|---|
| 2016 | 73.2% |
| 2017 | 65.5% |
| 2018 | 53.1% |
| 2019 | 60.6% |
| 2020 | 91.9% |
| 2021 | 66.6% |
| 2022 | 77.4% |
| 2023 | 62.6% |
| 2024 | 57.2% |
| 2025 | 62.7% |
| 2026 | 61.8% |
In January 2026, 62% of the daily temperature records were record highs (1.6 to 1 highs to lows), against an average of 67% for January in 2016 to 2025.
The Top 10 Records of January 2026
| Date | Station | Country | Record | Value | Significance |
|---|---|---|---|---|---|
| 2026-01-28 | Artesia 6S | United States | Monthly precipitation | 62.2 mm (2.4 in) | 85 of 100 (Exceptional) |
| 2026-01-27 | Oak Park Station | Australia | All-time precipitation | 270.0 mm (10.6 in) | 83 of 100 (Exceptional) |
| 2026-01-05 | Park Falls Dnr HQ | United States | Monthly snowfall | 43.2 cm (17.0 in) | 81 of 100 (Exceptional) |
| 2026-01-09 | Vinton | United States | Daily precipitation | 36.8 mm (1.4 in) | 80 of 100 (Exceptional) |
| 2026-01-09 | Stevens Pt | United States | Daily precipitation | 36.3 mm (1.4 in) | 80 of 100 (Exceptional) |
| 2026-01-09 | Escanaba | United States | Daily precipitation | 36.1 mm (1.4 in) | 80 of 100 (Exceptional) |
| 2026-01-24 | Kowanyama Airport | Australia | Daily precipitation | 306.2 mm (12.1 in) | 80 of 100 (Exceptional) |
| 2026-01-26 | Dublin Phoenix Park | Ireland | Daily precipitation | 37.6 mm (1.5 in) | 80 of 100 (Exceptional) |
| 2026-01-26 | Clarion 3 SW | United States | Daily snowfall | 35.6 cm (14.0 in) | 80 of 100 (Exceptional) |
| 2026-01-27 | Mundrabilla Station | Australia | Daily precipitation | 54.8 mm (2.2 in) | 80 of 100 (Exceptional) |
Countries With the Most Records
| Country | Records | Highs | Lows |
|---|---|---|---|
| United States | 19,804 | 9,688 | 5,596 |
| Australia | 1,803 | 1,024 | 213 |
| Netherlands | 559 | 12 | 4 |
| Sweden | 525 | 12 | 252 |
| Germany | 337 | 75 | 56 |
| China | 313 | 218 | 95 |
| Mongolia | 260 | 101 | 157 |
| Japan | 229 | 216 | 13 |
| Spain | 143 | 41 | 24 |
| Finland | 141 | 1 | 137 |
| India | 121 | 58 | 63 |
| Norway | 115 | 9 | 87 |
| Russia | 78 | 24 | 20 |
| Kazakhstan | 64 | 37 | 27 |
| United Kingdom | 59 | 3 | 14 |
Events and Storms
11 named storms had a best track position in January 2026; 6 peaked at 64 kt (119 km/h, 74 mph) or more and 3 at 96 kt (178 km/h, 110 mph) or more over their lifetime.
| Storm | Basin | Lifetime peak wind | Category at peak |
|---|---|---|---|
| Mitchell | South Pacific | 77 kt (143 km/h, 89 mph) | Category 1 |
| Fytia | South-West Indian | 96 kt (178 km/h, 110 mph) | Category 3 |
| Luana | South-West Indian | 54 kt (100 km/h, 62 mph) | Tropical storm |
| Ewetse | South-West Indian | 50 kt (93 km/h, 58 mph) | Tropical storm |
| Nokaen | Western North Pacific | 51 kt (94 km/h, 59 mph) | Tropical storm |
| Dudzai | South-West Indian | 122 kt (226 km/h, 140 mph) | Category 4 |
| Koji | South Pacific | 55 kt (102 km/h, 63 mph) | Tropical storm |
| Jenna | South-West Indian | 90 kt (167 km/h, 104 mph) | Category 2 |
| Iggy | South-West Indian | 45 kt (83 km/h, 52 mph) | Tropical storm |
| Hayley | South-West Indian | 90 kt (167 km/h, 104 mph) | Category 2 |
| Grant | South-West Indian | 119 kt (220 km/h, 137 mph) | Category 4 |
January 2026 in Context
These values come from other sources and the site's own analysis pages. They are context for January 2026; this page does not say that any of them caused the temperatures or records above.
How These Numbers Are Made
Each station's mean daily maximum and minimum temperature for January 2026 is compared with its own mean for January in 1991 to 2020, from months with at least 20 days of both. A station needs 20 such years for a normal. The mean is the average of the two differences. A station month more than 15 C (27 F) from its normal in either element is treated as a data error and left out.
For the world and each continent, stations are averaged within 5 degree grid cells and the cells are averaged weighted by the cosine of their latitude, so dense networks do not outweigh sparse ones. A continent uses the stations of its own countries. A year gets a value and a rank only when its cells hold at least 50% of the weight of all the cells that have ever had data for January, the rule of the climate pages. This is a station based view: places without stations are not covered, and it is not a gridded temperature analysis.
Records are the site's public ledger: one record per observation, set or tied, at its broadest timescale. The ten year comparison uses daily temperature records only, ties excluded. The numbers and sentences on this page are generated by code from the station data; none of them is typed in by hand.
Download the Data
More Months
Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Source: International Best Track Archive for Climate Stewardship (IBTrACS) v04r01, NOAA National Centers for Environmental Information, doi:10.25921/82ty-9e16. Some agency values come from third parties such as JMA, IMD and BoM. (NOAA NCEI terms (citation requested)) Source: NOAA Climate Prediction Center, Oceanic Nino Index (ONI) and Relative Oceanic Nino Index (RONI). Episodes and strength classes are computed by World Extreme Weather Monitor and are not NOAA products. (US Government work, public domain (NWS disclaimer)) Source: Fetterer, F., Knowles, K., Meier, W. N., Savoie, M., Windnagel, A. K. and Stafford, T. (2025). Sea Ice Index, Version 4 (G02135). Boulder, Colorado USA. National Snow and Ice Data Center. doi:10.7265/a98x-0f50. Yearly extremes, ranks, trends and the climatology are computed by World Extreme Weather Monitor from the daily extent files and are not NSIDC products. (NSIDC data use and citation policy (public domain government funded data, citation required)) Source: NOAA Global Monitoring Laboratory, Earth System Research Laboratories (gml.noaa.gov/ccgg/trends). Mauna Loa CO2 data are from NOAA and Scripps (before 1974 the monthly values come from the Scripps Institution of Oceanography). The global means of CO2, methane and nitrous oxide are from the NOAA GML cooperative air sampling network (methane and nitrous oxide: Lan, Thoning and Dlugokencky, doi:10.15138/P8XG-AA10). (US Government open data (NOAA GML, citation requested)) Data as of 2026-11-09. Temperatures against normal, ranks and records are computed by this site from station data and are not official.