Mean Rate of Change ( °C / Century )

Since: 1760 1810 1860 1910 1960 1990
Benin - - 0.99
± 0.22
0.63
± 0.13
1.82
± 0.42
3.04
± 0.85
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
± 1.13 ± 0.60 ± 0.45 ± 0.39 ± 0.34

Correlation to Global Land Average (R value)

Smoothing Monthly Annual Five-year Ten-year Twenty-year
0.60 0.82 0.88 0.90 0.90

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

Jan Feb Mar Apr May Jun
± 1.39 ± 1.25 ± 0.98 ± 1.01 ± 0.87 ± 0.85
Jul Aug Sep Oct Nov Dec
± 0.80 ± 0.85 ± 0.71 ± 0.71 ± 0.81 ± 1.14

History of Temperature Stations

Evolution of Climate Extremes

Mean of Daily High Temperature

Mean of Daily Low Temperature