When to paint a house exterior in Columbia, IL
When to paint in Columbia, IL
A short season: book early and expect weather delays. The painting window is August to September, with 2 good months a year. The best month is September, at about 14 painting days. Book a painter by June.
If you want the house done in August to September, call for quotes in June 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 Apr, May, Jun, Jul, Aug, Sep, Oct.
- under 1Jan
- 1Feb
- 2Mar
- 6Apr
- 10May
- 10Jun
- 9Jul
- 14Aug
- 14Sep
- 8Oct
- 2Nov
- under 1Dec
Month by month
| Month | Painting days | Staining days | With low-temp paint | Avg low / high |
|---|---|---|---|---|
| January | under 1 | under 1 | 2 | 26° / 43°F |
| February | 1 | 1 | 5 | 28° / 49°F |
| March | 2 | 2 | 9 | 38° / 60°F |
| April | 6 | 4 | 15 | 46° / 70°F |
| May | 10 | 7 | 14 | 57° / 79°F |
| June | 10 | 8 | 10 | 66° / 89°F |
| July | 9 | 6 | 9 | 70° / 90°F |
| August | 14 | 13 | 14 | 67° / 88°F |
| September | 14 | 12 | 17 | 60° / 85°F |
| October | 8 | 6 | 19 | 48° / 72°F |
| November | 2 | 2 | 10 | 37° / 58°F |
| December | under 1 | under 1 | 4 | 31° / 49°F |
Deck stain does best in August. Low-temperature paint adds about 52 days a year here.
Towns near Columbia compared
Every one of the 6 closest places lands within three days of Columbia's 75 a year, so the season here is the regional season. Cahokia Heights, Arnold, Waterloo, Crestwood, Webster Groves, East St. Louis are read from the same station as Columbia, so their numbers match; the real difference is the distance from that station.
| Place | From Columbia | Painting days a year | Window | Station |
|---|---|---|---|---|
| Cahokia Heights, IL | 9 mi northeast | 75 | August to September | same station |
| Arnold, MO | 9 mi west | 75 | August to September | same station |
| Waterloo, IL | 9 mi southeast | 75 | August to September | same station |
| Crestwood, MO | 11 mi northwest | 75 | August to September | same station |
| Webster Groves, MO | 12 mi northwest | 75 | August to September | same station |
| East St. Louis, IL | 12 mi northeast | 75 | August to September | same station |
How Columbia ranks in IL
Of 225 IL places with 10,000 people or more, Columbia (population 10,919, 211th largest) ranks 172nd for painting days, 2 days below the state median of 77. The longest season in the state is Chicago, 131 days, 269 miles northeast. The shortest is Woodstock at 65. Switching to low-temperature paint here is worth 52 extra days, more than most of the summer months on their own.
Where these numbers come from
Daily records from St Louis Downtown Airport (8.4 miles away), 2015 to 2024, NOAA Global Summary of the Day. A month is good at 12+ painting days and possible at 6+.