When to paint a house exterior in St. Louis, MO
When to paint in St. Louis, MO
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 St. Louis compared
3 get fewer, down to 70 a year. 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. East St. Louis, Cahokia Heights, Webster Groves are read from the same station as St. Louis, so their numbers match; the real difference is the distance from that station.
| Place | From St. Louis | Painting days a year | Window | Station |
|---|---|---|---|---|
| Clayton, MO | 5 mi west | 70 | September | Lambert-St Louis Internationa |
| University City, MO | 5 mi northwest | 70 | September | Lambert-St Louis Internationa |
| Jennings, MO | 6 mi north | 70 | September | Lambert-St Louis Internationa |
| East St. Louis, IL | 6 mi east | 75 | August to September | same station |
| Cahokia Heights, IL | 7 mi southeast | 75 | August to September | same station |
| Webster Groves, MO | 7 mi southwest | 75 | August to September | same station |
How St. Louis ranks in MO
Of 80 MO places with 10,000 people or more, St. Louis (population 279,695, 2nd largest) ranks 33rd for painting days, 3 days above the state median of 72. The longest season in the state is Branson, 93 days, 218 miles southwest. The shortest is Moberly at 61. 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 (6.5 miles away), 2015 to 2024, NOAA Global Summary of the Day. A month is good at 12+ painting days and possible at 6+.