New Design, Illinois
| Monroe County, Illinois | |
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Monroe County Courthouse, Waterloo
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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 | 1816 |
| Named for | James Monroe |
| Seat | Waterloo |
| Largest city | Waterloo |
| Area | |
| • Total | 398 sq mi (1,031 km2) |
| • Land | 385 sq mi (997 km2) |
| • Water | 13 sq mi (34 km2), 3.3% |
| Population | |
| • (2010) | 32,957 |
| • Density | 86/sq mi (33/km²) |
| Congressional district | 12th |
| Time zone | Central: UTC-6/-5 |
| Website | www |
| Waterloo, Illinois | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| Climate chart () | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| J | F | M | A | M | J | J | A | S | O | N | D |
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2.3
38
20
|
2.4
44
25
|
3.7
55
35
|
4.2
66
45
|
4
76
55
|
4
84
64
|
4.3
89
68
|
3.1
87
66
|
3.4
80
59
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3.1
69
47
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4.2
54
36
|
3.4
42
25
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| Average max. and min. temperatures in °F | |||||||||||
| Precipitation totals in inches | |||||||||||
| Source: The Weather Channel | |||||||||||
| Metric conversion | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| J | F | M | A | M | J | J | A | S | O | N | D |
|
59
3
−7
|
61
7
−4
|
95
13
2
|
106
19
7
|
103
24
13
|
102
29
18
|
108
32
20
|
80
31
19
|
87
27
15
|
77
21
8
|
107
12
2
|
86
Wikipedia
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