Country: United States
Latitude:40.9885 N
Longitude:93.7278 W
Nearby Cities:Des Moines, West Des Moines, Ankeny, Urbandale, Newton, Clive

Mean Rate of Change ( °C / Century )

Since: 1760 1810 1860 1910 1960 1990
Current Location 0.48
± 0.27
0.82
± 0.30
1.05
± 0.20
0.72
± 0.10
2.28
± 0.16
3.84
± 0.57
Iowa 0.49
± 0.26
0.85
± 0.29
1.12
± 0.19
0.81
± 0.11
2.39
± 0.15
4.18
± 0.60
Missouri 0.45
± 0.26
0.73
± 0.33
0.89
± 0.21
0.65
± 0.10
2.24
± 0.22
3.62
± 0.50
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
± 3.62 ± 1.31 ± 0.60 ± 0.41 ± 0.32

Correlation to Global Land Average (R value)

Smoothing Monthly Annual Five-year Ten-year Twenty-year
0.46 0.65 0.84 0.90 0.92

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

Jan Feb Mar Apr May Jun
± 5.52 ± 5.37 ± 4.70 ± 3.41 ± 3.14 ± 2.69
Jul Aug Sep Oct Nov Dec
± 2.64 ± 2.58 ± 2.76 ± 3.45 ± 3.78 ± 5.04

History of Temperature Stations

Evolution of Climate Extremes

Mean of Daily High Temperature

Mean of Daily Low Temperature