Country: United States
Latitude:39.3836 N
Longitude:106.1272 W
Nearby Cities:Arvada, Boulder, Ken Caryl, Lafayette, Louisville, Golden

Mean Rate of Change ( °C / Century )

Since: 1760 1810 1860 1910 1960 1990
Current Location - 0.61
± 0.29
0.66
± 0.17
1.08
± 0.16
1.93
± 0.27
2.07
± 0.75
Colorado - 0.61
± 0.27
0.67
± 0.16
0.99
± 0.09
1.99
± 0.20
2.72
± 0.40
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
± 2.80 ± 1.03 ± 0.49 ± 0.37 ± 0.27

Correlation to Global Land Average (R value)

Smoothing Monthly Annual Five-year Ten-year Twenty-year
0.37 0.61 0.84 0.90 0.94

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

Jan Feb Mar Apr May Jun
± 3.61 ± 3.78 ± 3.50 ± 2.88 ± 2.34 ± 2.21
Jul Aug Sep Oct Nov Dec
± 1.64 ± 1.58 ± 2.12 ± 2.42 ± 3.51 ± 3.79

History of Temperature Stations

Evolution of Climate Extremes

Mean of Daily High Temperature

Mean of Daily Low Temperature