Country: United States
Latitude:45.8104 N
Longitude:123.4615 W
Nearby Cities:Portland, Vancouver, Gresham, Beaverton, Hillsboro, Tigard

Mean Rate of Change ( °C / Century )

Since: 1760 1810 1860 1910 1960 1990
Current Location - - 0.56
± 0.22
0.79
± 0.11
1.27
± 0.21
-1.62
± 0.60
Washington - - 0.63
± 0.22
0.84
± 0.09
1.40
± 0.22
-0.54
± 0.41
Oregon - - 0.49
± 0.25
0.79
± 0.13
1.19
± 0.19
-0.33
± 0.29
Contiguous United States - 0.66
± 0.25
0.76
± 0.18
0.87
± 0.08
2.16
± 0.16
2.76
± 0.36
United States - 0.69
± 0.24
0.80
± 0.16
0.89
± 0.08
2.36
± 0.13
2.42
± 0.39
North America - 0.82
± 0.23
1.02
± 0.18
1.11
± 0.11
2.90
± 0.19
4.72
± 0.28
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

Local Climate Variabiity

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

Smoothing Monthly Annual Five-year Ten-year Twenty-year
± 2.35 ± 0.97 ± 0.53 ± 0.36 ± 0.25

Correlation to Global Land Average (R value)

Smoothing Monthly Annual Five-year Ten-year Twenty-year
0.36 0.60 0.81 0.90 0.96

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

Jan Feb Mar Apr May Jun
± 3.52 ± 3.08 ± 2.61 ± 2.10 ± 2.08 ± 1.84
Jul Aug Sep Oct Nov Dec
± 1.64 ± 1.57 ± 1.75 ± 1.82 ± 2.51 ± 2.84

History of Temperature Stations

Evolution of Climate Extremes

Mean of Daily High Temperature

Mean of Daily Low Temperature