Global temperature in the 1940s

Decade average+0.04°C1951–1980

vs previous decade+0.17°C

Warmest year1944+0.20°C

CO₂ average–Mauna Loa

Each year

1940+0.12°C

1941+0.18°C

1942+0.06°C

1943+0.09°C

1944+0.20°C

1945+0.09°C

1946−0.07°C

1947−0.03°C

1948−0.11°C

1949−0.11°C

Year	Global	NH	SH	Rank
1940	+0.12°C	+0.17°C	+0.09°C	51
1941	+0.18°C	+0.22°C	+0.16°C	44
1942	+0.06°C	+0.12°C	±0.00°C	57
1943	+0.09°C	+0.18°C	−0.01°C	53
1944	+0.20°C	+0.27°C	+0.14°C	43
1945	+0.09°C	+0.11°C	+0.09°C	54
1946	−0.07°C	+0.03°C	−0.17°C	76
1947	−0.03°C	+0.08°C	−0.14°C	74
1948	−0.11°C	−0.02°C	−0.20°C	87
1949	−0.11°C	−0.03°C	−0.20°C	88

1880s−0.22°C

1890s−0.24°C

1900s−0.32°C

1910s−0.34°C

1920s−0.24°C

1930s−0.12°C

1940s ◀+0.04°C

1950s−0.05°C

1960s−0.03°C

1970s+0.03°C

1980s+0.25°C

1990s+0.39°C

2000s+0.59°C

2010s+0.81°C

2020s+1.07°C

Temperatures are anomalies vs the 1951–1980 average (NASA GISTEMP v4); values can be revised later.