Global temperature, Dec 1930

Global anomaly−0.06°C1951–1980

Rank among all Decs81 / 146warmest first

N. Hemisphere+0.08°C

S. Hemisphere−0.18°C

vs same month last year+0.49°C

CO₂ (Mauna Loa)–

All months of 1930

Jan−0.31°C

Feb−0.27°C

Mar−0.11°C

Apr−0.25°C

May−0.24°C

Jun−0.22°C

Jul−0.21°C

Aug−0.15°C

Sep−0.15°C

Oct−0.12°C

Nov+0.17°C

Dec ◀−0.06°C

This month−0.06°C

Same month, previous year−0.55°C

Same month 10 years earlier−0.47°C

Same month 50 years earlier−0.18°C

Dec average 1991–2020+0.60°C

Warmest Dec on record (2023)+1.36°C

Year	Global	NH	SH	Rank
1920	−0.47°C	−0.72°C	−0.22°C	138
1921	−0.18°C	−0.13°C	−0.23°C	105
1922	−0.20°C	−0.16°C	−0.25°C	107
1923	−0.04°C	+0.11°C	−0.17°C	72
1924	−0.43°C	−0.36°C	−0.51°C	133
1925	+0.06°C	+0.23°C	−0.09°C	59
1926	−0.30°C	−0.30°C	−0.28°C	122
1927	−0.33°C	−0.37°C	−0.27°C	128
1928	−0.16°C	−0.03°C	−0.29°C	100
1929	−0.55°C	−0.66°C	−0.42°C	142
1930	−0.06°C	+0.08°C	−0.18°C	81
1931	−0.05°C	+0.10°C	−0.20°C	76
1932	−0.27°C	−0.22°C	−0.31°C	116
1933	−0.45°C	−0.55°C	−0.36°C	137
1934	−0.03°C	+0.17°C	−0.23°C	70
1935	−0.17°C	−0.17°C	−0.17°C	102
1936	−0.01°C	+0.14°C	−0.18°C	65
1937	−0.08°C	−0.01°C	−0.14°C	88
1938	−0.13°C	−0.13°C	−0.14°C	94
1939	+0.42°C	+0.77°C	+0.09°C	31
1940	+0.31°C	+0.35°C	+0.29°C	39

Rank 969 of all 1760 months on record. Temperatures are anomalies vs the 1951–1980 average (NASA GISTEMP v4); values can be revised later.