Global temperature, Jan 1930

Global anomaly−0.31°C1951–1980

Rank among all Jans122 / 147warmest first

N. Hemisphere−0.13°C

S. Hemisphere−0.48°C

vs same month last year+0.14°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−0.31°C

Same month, previous year−0.45°C

Same month 10 years earlier−0.26°C

Same month 50 years earlier−0.19°C

Jan average 1991–2020+0.63°C

Warmest Jan on record (2025)+1.38°C

Year	Global	NH	SH	Rank
1920	−0.26°C	−0.16°C	−0.35°C	114
1921	−0.05°C	+0.18°C	−0.29°C	81
1922	−0.34°C	−0.39°C	−0.29°C	125
1923	−0.27°C	−0.17°C	−0.38°C	116
1924	−0.22°C	−0.27°C	−0.17°C	105
1925	−0.38°C	−0.27°C	−0.51°C	130
1926	+0.21°C	+0.54°C	−0.11°C	50
1927	−0.27°C	−0.29°C	−0.26°C	115
1928	−0.02°C	+0.26°C	−0.29°C	77
1929	−0.45°C	−0.56°C	−0.34°C	136
1930	−0.31°C	−0.13°C	−0.48°C	122
1931	−0.11°C	+0.01°C	−0.19°C	92
1932	+0.15°C	+0.39°C	−0.09°C	55
1933	−0.24°C	−0.19°C	−0.27°C	110
1934	−0.21°C	−0.15°C	−0.30°C	103
1935	−0.34°C	−0.41°C	−0.27°C	124
1936	−0.28°C	−0.29°C	−0.26°C	117
1937	−0.08°C	+0.08°C	−0.24°C	86
1938	+0.08°C	+0.35°C	−0.19°C	64
1939	−0.06°C	+0.02°C	−0.15°C	82
1940	−0.01°C	−0.11°C	+0.11°C	75

Rank 1512 of all 1760 months on record. Temperatures are anomalies vs the 1951–1980 average (NASA GISTEMP v4); values can be revised later.