Global temperature in the 1970s

Decade average+0.03°C1951–1980

vs previous decade+0.07°C

Warmest year1977+0.18°C

CO₂ average330.9 ppmMauna Loa

Each year

1970+0.03°C

1971−0.08°C

1972+0.01°C

1973+0.16°C

1974−0.07°C

1975−0.01°C

1976−0.10°C

1977+0.18°C

1978+0.07°C

1979+0.16°C

Year	Global	NH	SH	Rank
1970	+0.03°C	−0.04°C	+0.09°C	65
1971	−0.08°C	−0.15°C	−0.01°C	80
1972	+0.01°C	−0.18°C	+0.20°C	67
1973	+0.16°C	+0.09°C	+0.23°C	47
1974	−0.07°C	−0.18°C	+0.03°C	78
1975	−0.01°C	−0.06°C	+0.02°C	69
1976	−0.10°C	−0.21°C	+0.01°C	84
1977	+0.18°C	+0.12°C	+0.24°C	45
1978	+0.07°C	+0.02°C	+0.11°C	56
1979	+0.16°C	+0.08°C	+0.25°C	48

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.