Global temperature, Jan 1939

Global anomaly−0.06°C1951–1980

Rank among all Jans82 / 147warmest first

N. Hemisphere+0.02°C

S. Hemisphere−0.15°C

vs same month last year−0.14°C

CO₂ (Mauna Loa)–

All months of 1939

Jan ◀−0.06°C

Feb−0.07°C

Mar−0.18°C

Apr−0.10°C

May−0.05°C

Jun−0.07°C

Jul−0.06°C

Aug−0.07°C

Sep−0.08°C

Oct−0.04°C

Nov+0.07°C

Dec+0.42°C

This month−0.06°C

Same month, previous year+0.08°C

Same month 10 years earlier−0.45°C

Same month 50 years earlier−0.10°C

Jan average 1991–2020+0.63°C

Warmest Jan on record (2025)+1.38°C

Year	Global	NH	SH	Rank
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
1941	+0.17°C	+0.17°C	+0.19°C	52
1942	+0.29°C	+0.39°C	+0.18°C	44
1943	−0.01°C	−0.10°C	+0.06°C	74
1944	+0.36°C	+0.62°C	+0.08°C	36
1945	+0.10°C	+0.12°C	+0.10°C	60
1946	+0.15°C	+0.35°C	−0.03°C	54
1947	−0.07°C	−0.04°C	−0.08°C	83
1948	+0.06°C	+0.30°C	−0.18°C	69
1949	+0.06°C	+0.23°C	−0.10°C	68

Rank 963 of all 1760 months on record. Temperatures are anomalies vs the 1951–1980 average (NASA GISTEMP v4); values can be revised later.