January–September · 1.47°CPast-temperature estimate · WMO, nine datasets
October alone · 1.75°CPast-temperature estimate · Copernicus, ERA5
January–December · 1.56–1.61°CFull-year forecast · Copernicus, 95% prediction interval
The annual forecast uses ERA5 data through October to predict the average for all twelve months. Its dashed outline marks a predicted outcome.
All temperatures are above the 1850–1900 average. Span length represents months, not degrees. The article’s table explains the different uncertainty measures.