Global temperature in the 1920s

Decade average−0.24°C1951–1980

vs previous decade+0.09°C

Warmest year1926−0.11°C

CO₂ average–Mauna Loa

Each year

1920−0.28°C

1921−0.19°C

1922−0.29°C

1923−0.27°C

1924−0.27°C

1925−0.22°C

1926−0.11°C

1927−0.22°C

1928−0.20°C

1929−0.36°C

Year	Global	NH	SH	Rank
1920	−0.28°C	−0.30°C	−0.25°C	123
1921	−0.19°C	−0.11°C	−0.27°C	107
1922	−0.29°C	−0.27°C	−0.30°C	126
1923	−0.27°C	−0.22°C	−0.31°C	118
1924	−0.27°C	−0.18°C	−0.36°C	119
1925	−0.22°C	−0.14°C	−0.30°C	112
1926	−0.11°C	+0.02°C	−0.22°C	86
1927	−0.22°C	−0.13°C	−0.30°C	113
1928	−0.20°C	−0.10°C	−0.29°C	109
1929	−0.36°C	−0.34°C	−0.38°C	135

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.