Decatur, Illinois › Wedding Venues › Allerton Mansion
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About Allerton Mansion
Allerton Mansion brings venue services to weddings across Decatur, Illinois, working from Monticello. Couples touring this venue often compare it with nearby options such as Sunken Garden, Slate Events. As verified reviews arrive from couples who booked here, they will appear on this page — and they are the only thing that moves a Lazo Score.
Verified reviews
No reviews yet. Only couples who book Allerton Mansion through Lazo can leave one, and it’s the only thing that moves a Lazo Score.
Frequently asked questions
Planning a wedding venue in Decatur
How much do wedding venues cost in Decatur?
Venue pricing in Decatur spans widely — from around $3,000 for simpler spaces to $15,000+ for full-service estates and resorts. The real number to compare is total cost: ask what's included (tables, chairs, linens, staffing) and what's required (mandated caterers, minimums, service fees).
What questions should we ask on a venue tour?
Ask about rain plans, vendor restrictions, overtime fees, when vendors can load in, what the service charge covers, and exactly when you get the space. Get the full fee schedule in writing before signing.
How does Lazo rank wedding venues in Decatur?
Rankings come from the Lazo Score — verified reviews weighted for recency — and are never sold. Vendors without verified reviews yet start at the community baseline of 65 and earn their score as verified reviews arrive.
Decatur weddings, month by month
Days typically top out between 65° and 85° in May, June, August, September, October. The driest months are January, February, December.
| Month | High | Low | Rain | Golden hour | Sunset |
|---|---|---|---|---|---|
| Jan | 35° | 20° | 12% | 4:14 PM | 4:55 PM |
| Feb | 40° | 23° | 13% | 4:54 PM | 5:31 PM |
| Mar | 52° | 32° | 20% | 6:26 PM | 7:02 PM |
| Apr | 64° | 42° | 22% | 6:57 PM | 7:34 PM |
| May | 74° | 53° | 27% | 7:25 PM | 8:04 PM |
| Jun | 83° | 62° | 22% | 7:45 PM | 8:25 PM |
| Jul | 86° | 66° | 18% | 7:43 PM | 8:23 PM |
| Aug | 84° | 63° | 16% | 7:14 PM | 7:51 PM |
| Sep | 79° | 55° | 16% | 6:28 PM | 7:04 PM |
| Oct | 66° | 44° | 18% | 5:39 PM | 6:16 PM |
| Nov | 51° | 34° | 17% | 3:59 PM | 4:39 PM |
| Dec | 40° | 25° | 15% | 3:49 PM | 4:31 PM |
Average highs, lows and the share of days with 0.1″ of rain or more, from NOAA’s 1991–2020 climate normals at Decatur Airport (3.9 mi from Decatur). Golden hour begins when the sun is 6° above the horizon; both times are for the 15th of each month in Decatur.
Getting to Decatur
| Airport | Distance | Est. drive |
|---|---|---|
| DEC Decatur Airport | 4 mi | 5 min |
| CMI University of Illinois Willard Airport | 37 mi | 55 min |
| STL St. Louis Lambert International Airport | 108 mi | 2 hr 40 min |
| City | Distance | Est. drive |
|---|---|---|
| St. Louis | 109 mi | 2 hr 10 min |
| Indianapolis | 147 mi | 3 hr |
| Chicago | 155 mi | 3 hr 10 min |
| Louisville | 203 mi | 4 hr 10 min |
Straight-line distance from central Decatur; drive times are estimates, not routes. Airports with scheduled passenger service, from OurAirports.
Details
- Based in
- 515 Old Timber Rd, Monticello, IL 61856, USA
- Where
- Monticello · 18 miles northeast of central Decatur
- Listed under
- Wedding Venues
- In Decatur
- One of 9 wedding venues we list · 2 within 3 miles
- Phone
- (217) 333-3287
- Website
- Visit site
Around Monticello
- Wedding Venues nearby
- 2 within 3 mi, 3 within 10
Distances are straight-line from Allerton Mansion; counts come from the businesses and venues Lazo lists around Decatur.
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