Global temperature, Jan 1917

Global anomaly−0.57°C1951–1980

Rank among all Jans141 / 147warmest first

N. Hemisphere−0.53°C

S. Hemisphere−0.64°C

vs same month last year−0.43°C

CO₂ (Mauna Loa)–

All months of 1917

Jan ◀−0.57°C

Feb−0.63°C

Mar−0.63°C

Apr−0.55°C

May−0.56°C

Jun−0.44°C

Jul−0.26°C

Aug−0.23°C

Sep−0.23°C

Oct−0.45°C

Nov−0.34°C

Dec−0.68°C

This month−0.57°C

Same month, previous year−0.14°C

Same month 10 years earlier−0.43°C

Jan average 1991–2020+0.63°C

Warmest Jan on record (2025)+1.38°C

Year	Global	NH	SH	Rank
1907	−0.43°C	−0.58°C	−0.29°C	134
1908	−0.45°C	−0.55°C	−0.36°C	137
1909	−0.74°C	−0.95°C	−0.52°C	146
1910	−0.43°C	−0.36°C	−0.51°C	133
1911	−0.63°C	−0.70°C	−0.55°C	143
1912	−0.28°C	−0.37°C	−0.18°C	118
1913	−0.42°C	−0.57°C	−0.26°C	132
1914	+0.02°C	+0.16°C	−0.11°C	72
1915	−0.22°C	−0.27°C	−0.15°C	106
1916	−0.14°C	−0.10°C	−0.17°C	95
1917	−0.57°C	−0.53°C	−0.64°C	141
1918	−0.48°C	−0.70°C	−0.29°C	139
1919	−0.20°C	−0.38°C	−0.02°C	101
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

Rank 1737 of all 1760 months on record. Temperatures are anomalies vs the 1951–1980 average (NASA GISTEMP v4); values can be revised later.