When to paint a house exterior in St. Charles, MO
When to paint in St. Charles, MO
A short season: book early and expect weather delays. The painting window is September, with 1 good month a year. The best month is September, at about 14 painting days. Book a painter by July.
If you want the house done in September, call for quotes in July 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, Aug, Sep, Oct.
- under 1Jan
- 1Feb
- 2Mar
- 7Apr
- 11May
- 8Jun
- 6Jul
- 12Aug
- 14Sep
- 9Oct
- 2Nov
- 1Dec
Month by month
| Month | Painting days | Staining days | With low-temp paint | Avg low / high |
|---|---|---|---|---|
| January | under 1 | under 1 | 2 | 25° / 45°F |
| February | 1 | 1 | 5 | 27° / 51°F |
| March | 2 | 2 | 10 | 38° / 62°F |
| April | 7 | 5 | 16 | 46° / 72°F |
| May | 11 | 8 | 14 | 58° / 81°F |
| June | 8 | 5 | 8 | 68° / 90°F |
| July | 6 | 3 | 6 | 71° / 93°F |
| August | 12 | 10 | 12 | 69° / 90°F |
| September | 14 | 11 | 15 | 63° / 86°F |
| October | 9 | 7 | 21 | 50° / 74°F |
| November | 2 | 2 | 10 | 37° / 60°F |
| December | 1 | under 1 | 4 | 30° / 52°F |
Deck stain does best in September. Low-temperature paint adds about 52 days a year here.
Towns near St. Charles compared
Every one of the 6 closest places lands within three days of St. Charles's 70 a year, so the season here is the regional season. Bridgeton, Maryland Heights, Hazelwood, St. Ann, Creve Coeur are read from the same station as St. Charles, so their numbers match; the real difference is the distance from that station.
| Place | From St. Charles | Painting days a year | Window | Station |
|---|---|---|---|---|
| St. Peters, MO | 5 mi west | 71 | August to September | Spirit Of St Louis Airport |
| Bridgeton, MO | 6 mi east | 70 | September | same station |
| Maryland Heights, MO | 6 mi southeast | 70 | September | same station |
| Hazelwood, MO | 6 mi east | 70 | September | same station |
| St. Ann, MO | 8 mi southeast | 70 | September | same station |
| Creve Coeur, MO | 10 mi southeast | 70 | September | same station |
How St. Charles ranks in MO
Of 80 MO places with 10,000 people or more, St. Charles (population 72,458, 8th largest) ranks 66th for painting days, 2 days below the state median of 72. The longest season in the state is Branson, 93 days, 214 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 Lambert-St Louis Internationa (8.2 miles away), 2015 to 2024, NOAA Global Summary of the Day. A month is good at 12+ painting days and possible at 6+.