Country: United States
Latitude:39.3836 N
Longitude:122.7746 W
Nearby Cities:Chico, Windsor, Ukiah, Clearlake, Red Bluff, Healdsburg

Mean Rate of Change ( °C / Century )

Since: 1760 1810 1860 1910 1960 1990
Current Location - - 0.45
± 0.28
0.92
± 0.17
1.47
± 0.15
-0.11
± 0.31
California - - 0.47
± 0.26
0.99
± 0.14
1.76
± 0.13
0.83
± 0.39
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
± 2.38 ± 0.98 ± 0.57 ± 0.46 ± 0.38

Correlation to Global Land Average (R value)

Smoothing Monthly Annual Five-year Ten-year Twenty-year
0.25 0.49 0.74 0.83 0.87

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

Jan Feb Mar Apr May Jun
± 2.42 ± 2.61 ± 2.72 ± 2.65 ± 2.59 ± 2.14
Jul Aug Sep Oct Nov Dec
± 1.71 ± 1.66 ± 2.04 ± 2.21 ± 2.08 ± 2.25

History of Temperature Stations

Evolution of Climate Extremes

Mean of Daily High Temperature

Mean of Daily Low Temperature