2025 according to NASA was.the
WORLD SECOND HOTTEST YEAR
With an anomaly of +0.58C vs 1991/2020 or +1.19C vs 1951/1980 it beat 2023 by 0.02C and was behind 2024 by 0.09C

European Copernicus and Japanese JMA had 2023 slightly ahead of 2025 (3rd hottest than)

Just in:
2025 IN MAINLAND USA

Average Temperature:54.64F
Anomaly:+1.37F
4th warmest behind:
2024
2012
2016

All the 9 warmest years since 1880 were recorded after 2011.
Graph by NOAA

November 2025 Globally,according to NASA, had a temperature anomaly of +0.61C vs 1991/2020 norm and was the 3rd warmest November on record behind 2023 and 2024.

2025 is still slightly ahead of 2023 but it's expected to end tied with 2023 as the 2nd hottest year behind 2024.

November 2025 in USA was the 4th warmest on record.
it was record hot in some western areas and Texas.

Meteorological Fall (Sep-Nov) ranked the 3rd hottest on record.

Map by NOAA

September 2025 Globally,according to Copernicus,had an average temperature of 16.11C which is 0.66C above the 1991/2020 normal and ranked the 3rd hottest on record behind 2023 and 2024.

World most above average country was Canada,the most below was Libya.

August 2025 ,according to NOAA was Earth’s third-warmest August and June–August period on record behind 2023 and 2024.

Arctic sea ice extent was the 7th smallest August extent on record.
The Antarctic sea ice extent was the 3rd smallest

2025 SUMMER IN USA: Warm but not exceptional

Average temperature throughout June-August was 73.33F, with an anomaly of +1.02F vs 1991/2020 and ranked the 12th warmest summer on record.

Graph by NOAA