Global temperature, Oct 2021

Global anomaly+0.98°C1951–1980

Rank among all Octs7 / 146warmest first

N. Hemisphere+1.29°C

S. Hemisphere+0.67°C

vs same month last year+0.11°C

CO₂ (Mauna Loa)413.90 ppm

All months of 2021

Jan+0.82°C

Feb+0.64°C

Mar+0.89°C

Apr+0.76°C

May+0.79°C

Jun+0.85°C

Jul+0.92°C

Aug+0.81°C

Sep+0.92°C

Oct ◀+0.98°C

Nov+0.93°C

Dec+0.88°C

This month+0.98°C

Same month, previous year+0.87°C

Same month 10 years earlier+0.65°C

Same month 50 years earlier−0.04°C

Oct average 1991–2020+0.62°C

Warmest Oct on record (2024)+1.35°C

Year	Global	NH	SH	Rank
2011	+0.65°C	+0.90°C	+0.40°C	20
2012	+0.80°C	+0.90°C	+0.69°C	13
2013	+0.69°C	+0.83°C	+0.56°C	18
2014	+0.80°C	+0.93°C	+0.68°C	12
2015	+1.08°C	+1.29°C	+0.88°C	4
2016	+0.87°C	+1.03°C	+0.71°C	11
2017	+0.88°C	+1.03°C	+0.74°C	9
2018	+1.02°C	+1.23°C	+0.81°C	5
2019	+1.00°C	+1.29°C	+0.71°C	6
2020	+0.87°C	+1.20°C	+0.54°C	10
2021	+0.98°C	+1.29°C	+0.67°C	7
2022	+0.97°C	+1.32°C	+0.62°C	8
2023	+1.35°C	+1.88°C	+0.83°C	2
2024	+1.35°C	+1.75°C	+0.96°C	1
2025	+1.19°C	+1.49°C	+0.89°C	3

Rank 67 of all 1760 months on record. Temperatures are anomalies vs the 1951–1980 average (NASA GISTEMP v4); values can be revised later.