Mean Rate of Change ( °C / Century )

Since: 1760 1810 1860 1910 1960 1990
Western Africa - - 0.92
± 0.20
0.86
± 0.13
2.02
± 0.31
3.09
± 0.54
Africa - - 0.83
± 0.20
0.92
± 0.12
1.99
± 0.21
2.49
± 0.45
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
± 1.04 ± 0.46 ± 0.25 ± 0.19 ± 0.16

Correlation to Global Land Average (R value)

Smoothing Monthly Annual Five-year Ten-year Twenty-year
0.65 0.89 0.96 0.97 0.97

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

Jan Feb Mar Apr May Jun
± 1.42 ± 1.31 ± 1.09 ± 1.00 ± 0.85 ± 0.79
Jul Aug Sep Oct Nov Dec
± 0.74 ± 0.87 ± 0.69 ± 0.69 ± 0.89 ± 1.12

History of Temperature Stations

Evolution of Climate Extremes

Mean of Daily High Temperature

Mean of Daily Low Temperature