When to paint a house exterior in Darien, IL
When to paint in Darien, IL
A normal season: plan the job, do not leave it late. The painting window is July to September, with 3 good months a year. The best month is August, at about 17 painting days. Book a painter by May.
If you want the house done in July to September, call for quotes in May or earlier; a job pushed past September is likely to wait until next year. For a deck, the months with enough staining days to spare are May, Jun, Jul, Aug, Sep, Oct.
- under 1Jan
- under 1Feb
- 1Mar
- 2Apr
- 9May
- 12Jun
- 15Jul
- 17Aug
- 14Sep
- 4Oct
- 1Nov
- under 1Dec
Month by month
| Month | Painting days | Staining days | With low-temp paint | Avg low / high |
|---|---|---|---|---|
| January | under 1 | under 1 | under 1 | 21° / 33°F |
| February | under 1 | under 1 | 2 | 22° / 40°F |
| March | 1 | 1 | 4 | 32° / 50°F |
| April | 2 | 2 | 10 | 40° / 61°F |
| May | 9 | 7 | 15 | 51° / 73°F |
| June | 12 | 10 | 13 | 61° / 83°F |
| July | 15 | 9 | 15 | 65° / 84°F |
| August | 17 | 15 | 17 | 63° / 83°F |
| September | 14 | 13 | 17 | 58° / 78°F |
| October | 4 | 4 | 14 | 46° / 65°F |
| November | 1 | 1 | 5 | 33° / 51°F |
| December | under 1 | under 1 | 1 | 26° / 41°F |
Deck stain does best in August. Low-temperature paint adds about 40 days a year here.
Towns near Darien compared
4 of the 6 nearest places get more painting days, the most in Burr Ridge (89 a year, 3 miles east). A gap like that between towns is usually elevation, a coast or a lake, which is why a painter from a few towns over can be on a different schedule. Woodridge, Lemont are read from the same station as Darien, so their numbers match; the real difference is the distance from that station.
| Place | From Darien | Painting days a year | Window | Station |
|---|---|---|---|---|
| Burr Ridge, IL | 3 mi east | 89 | June to September | Chicago Midway International Airport |
| Woodridge, IL | 3 mi west | 74 | July to September | same station |
| Westmont, IL | 3 mi north | 89 | June to September | Chicago Midway International Airport |
| Downers Grove, IL | 4 mi northwest | 77 | June to September | Chicago O'Hare International |
| Hinsdale, IL | 5 mi northeast | 89 | June to September | Chicago Midway International Airport |
| Lemont, IL | 5 mi south | 74 | July to September | same station |
How Darien ranks in IL
Of 225 IL places with 10,000 people or more, Darien (population 22,015, 110th largest) ranks 182nd for painting days, 3 days below the state median of 77. The longest season in the state is Chicago, 131 days, 17 miles northeast. The shortest is Woodstock at 65. Switching to low-temperature paint here is worth 40 extra days, more than most of the summer months on their own.
Where these numbers come from
Daily records from Lewis University Airport (11.2 miles away), 2015 to 2024, NOAA Global Summary of the Day. A month is good at 12+ painting days and possible at 6+.