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Bourne Coulee

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Bourne Coulee is a valley located in Liberty County, Montana, United States. [1] It is situated in the central part of the country, about 2,900 km west of Washington, D.C.

The valley has a cool Semi-arid climate [2], with an average temperature of 7°C. July is the warmest month with an average temperature of 26°C, while December is the coldest with an average temperature of -10°C. [3] The average annual precipitation is 461 mm, with the wettest month being June with 111 mm of precipitation and the driest month being February with only 6 mm. [4] The valley is named after Bourne Coulee Creek, which runs through it.

Bourne Coulee
Climate chart (explanation)
J
F
M
A
M
J
J
A
S
O
N
D
 
 
13
 
 
−5
−11
 
 
6
 
 
−2
−13
 
 
19
 
 
10
−8
 
 
38
 
 
19
−3
 
 
84
 
 
27
2
 
 
111
 
 
29
8
 
 
41
 
 
38
14
 
 
52
 
 
35
11
 
 
39
 
 
27
5
 
 
21
 
 
15
−2
 
 
19
 
 
5
−7
 
 
17
 
 
−7
−13
Average max. and min. temperatures in °C
Precipitation totals in mm
Imperial conversion
JFMAMJJASOND
 
 
0.5
 
 
23
12
 
 
0.2
 
 
28
9
 
 
0.7
 
 
50
18
 
 
1.5
 
 
66
27
 
 
3.3
 
 
81
36
 
 
4.4
 
 
84
46
 
 
1.6
 
 
100
57
 
 
2
 
 
95
52
 
 
1.5
 
 
81
41
 
 
0.8
 
 
59
28
 
 
0.7
 
 
41
19
 
 
0.7
 
 
19
9
Average max. and min. temperatures in °F
Precipitation totals in inches

References

  1. ^ Bourne Coulee sa Geonames.org (cc-by); post updated 2006-01-15; database download sa 2017-02-28
  2. ^ Peel, M C; Finlayson, B L. "Updated world map of the Köppen-Geiger climate classification". Hydrology and Earth System Sciences. 11: 1633–1644. doi:10.5194/hess-11-1633-2007.{{cite journal}}: CS1 maint: unflagged free DOI (link)
  3. ^ "NASA Earth Observations Data Set Index". NASA.
  4. ^ "NASA Earth Observations: Rainfall (1 month - TRMM)". NASA/Tropical Rainfall Monitoring Mission.