Local Climate Change: 45.81 N, 111.92 W

Country:	United States
Latitude:	45.8104 N
Longitude:	111.9231 W
Nearby Cities:	Bozeman, Butte, Helena

Climate Stripes

Mean Rate of Change ( °C / Century )

Since:	1760	1810	1860	1910	1960	1990
Current Location	-	0.64 ± 0.29	0.71 ± 0.25	1.06 ± 0.13	1.66 ± 0.28	2.05 ± 0.64
Montana	-	0.78 ± 0.27	0.93 ± 0.22	1.15 ± 0.08	1.89 ± 0.23	1.74 ± 0.45
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

Temperature Record Months and Years

Seasonal Changes

Local Climate Variabiity

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

Smoothing	Monthly	Annual	Five-year	Ten-year	Twenty-year
	± 3.66	± 1.21	± 0.50	± 0.34	± 0.22

Correlation to Global Land Average (R value)

Smoothing	Monthly	Annual	Five-year	Ten-year	Twenty-year
	0.38	0.60	0.84	0.91	0.96

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

Jan	Feb	Mar	Apr	May	Jun
± 5.72	± 5.42	± 4.35	± 3.13	± 2.88	± 2.78
Jul	Aug	Sep	Oct	Nov	Dec
± 2.33	± 2.35	± 2.89	± 3.15	± 4.14	± 4.70

History of Temperature Stations

Evolution of Climate Extremes

Mean of Daily High Temperature

Mean of Daily Low Temperature

Change in Diurnal Range