St. Clair County, Illinois | ||
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St. Clair County Courthouse, Belleville
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Location in the U.S. state of Illinois |
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Illinois's location in the U.S. |
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Founded | 1790 | |
Named for | Arthur St. Clair | |
Seat | Belleville | |
Largest city | Belleville | |
Area | ||
• Total | 674 sq mi (1,746 km2) | |
• Land | 658 sq mi (1,704 km2) | |
• Water | 16 sq mi (41 km2), 2.4% | |
Population | ||
• (2010) | 270,056 | |
• Density | 411/sq mi (159/km²) | |
Congressional district | 12th | |
Time zone | Central: UTC-6/-5 | |
Website | www |
Belleville, Illinois | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Climate chart () | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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J | F | M | A | M | J | J | A | S | O | N | D |
2
40
22
|
2.2
46
27
|
3.5
57
35
|
3.9
68
45
|
4.2
77
54
|
4
86
63
|
3.5
90
67
|
3.3
88
64
|
3
82
56
|
2.9
71
45
|
3.9
56
36
|
3
44
27
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Average max. and min. temperatures in °F | |||||||||||
Precipitation totals in inches | |||||||||||
Source: The Weather Channel |
Metric conversion | |||||||||||
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J | F | M | A | M | J | J | A | S | O | N | D |
51
4
−6
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56
8
−3
|
90
14
2
|
99
20
7
|
106
25
12
|
101
30
17
|
89
32
19
|
85
31
18
|
76
28
13
|
73
22
7
|
99
13
2
|
...
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