Editing Fayette County, Illinois (section)

==Geography==
According to the [[U.S. Census Bureau]], the county has a total area of {{convert|725|sqmi}}, of which {{convert|716|sqmi}} is land and {{convert|8.9|sqmi}} (1.2%) is water.<ref name="census-density"/>

===Climate and weather===
{{climate chart
|[[Vandalia, Illinois]]
|18|35|2.49
|23|41|2.41
|32|52|3.72
|43|64|3.57
|53|74|4.11
|62|83|3.93
|67|88|3.61
|64|86|2.80
|55|79|2.97
|43|67|2.84
|34|53|3.70
|24|40|2.75
|float=right
|units=imperial
|clear=both
|source=The Weather Channel<ref name="weather">{{cite web
 |url         = http://www.weather.com/weather/wxclimatology/monthly/graph/USIL1197
 |title       = Monthly Averages for Vandalia, Illinois
 |access-date  = January 27, 2011
 |publisher   = The Weather Channel
 |url-status     = live
 |archive-url  = https://web.archive.org/web/20121023151638/http://www.weather.com/weather/wxclimatology/monthly/graph/USIL1197
 |archive-date = October 23, 2012
}}</ref>}}
In recent years, average temperatures in the county seat of Vandalia have ranged from a low of {{convert|18|°F}} in January to a high of {{convert|88|°F}} in July, although a record low of {{convert|-21|°F}} was recorded in January 1985 and a record high of {{convert|104|°F}} was recorded in July 1980. Average monthly precipitation ranged from {{convert|2.41|in}} in February to {{convert|4.11|in}} in May.<ref name="weather"/>

===Adjacent counties===
* [[Shelby County, Illinois|Shelby County]] - northeast
* [[Effingham County, Illinois|Effingham County]] - east
* [[Clay County, Illinois|Clay County]] - southeast
* [[Marion County, Illinois|Marion County]] - south
* [[Clinton County, Illinois|Clinton County]] - southwest
* [[Bond County, Illinois|Bond County]] - west
* [[Montgomery County, Illinois|Montgomery County]] - northwest

===Major highways===
* [[Image:I-57.svg|25px]] [[Interstate 57 in Illinois|Interstate 57]]
* [[Image:I-70.svg|25px]] [[Interstate 70 in Illinois|Interstate 70]]
* [[Image:US 40.svg|25px]] [[U.S. Route 40 in Illinois|U.S. Route 40]]
* [[Image:US 51.svg|25px]] [[U.S. Route 51 in Illinois|U.S. Route 51]]
* [[Image:Illinois 33.svg|25px]] [[Illinois Route 33]]
* [[Image:Illinois 37.svg|25px]] [[Illinois Route 37]]
* [[Image:Illinois 128.svg|25px]] [[Illinois Route 128]]
* [[Image:Illinois 140.svg|25px]] [[Illinois Route 140]]
* [[Image:Illinois 185.svg|25px]] [[Illinois Route 185]]