Mean Rate of Change ( °C / Century )

Since: 1760 1810 1860 1910 1960 1990
Northern Hemisphere - 0.79
± 0.16
0.96
± 0.10
1.19
± 0.05
2.56
± 0.20
3.56
± 0.20
Global Land 0.43
± 0.18
0.79
± 0.13
0.91
± 0.08
1.11
± 0.03
2.16
± 0.11
2.78
± 0.13

Regional Climate Variability

Difference from Global Land Average ( °C, 95% range )

Smoothing Monthly Annual Five-year Ten-year Twenty-year
± 0.26 ± 0.12 ± 0.08 ± 0.07 ± 0.05

Correlation to Global Land Average (R value)

Smoothing Monthly Annual Five-year Ten-year Twenty-year
0.99 0.99 1.00 1.00 1.00

Variability in Monthly Means ( °C, 95% range )

Jan Feb Mar Apr May Jun
± 1.40 ± 1.37 ± 1.23 ± 0.90 ± 0.67 ± 0.66
Jul Aug Sep Oct Nov Dec
± 0.70 ± 0.63 ± 0.81 ± 0.95 ± 1.10 ± 1.33

History of Temperature Stations

Evolution of Climate Extremes

Mean of Daily High Temperature

Mean of Daily Low Temperature