When to paint a house exterior in Gaithersburg, MD
When to paint in Gaithersburg, MD
A normal season: plan the job, do not leave it late. The painting window is August to September, with 3 good months a year. The best month is August, at about 16 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 May, Jun, Aug, Sep.
- under 1Jan
- under 1Feb
- 1Mar
- 3Apr
- 6May
- 13Jun
- 10Jul
- 16Aug
- 15Sep
- 5Oct
- 1Nov
- under 1Dec
Month by month
| Month | Painting days | Staining days | With low-temp paint | Avg low / high |
|---|---|---|---|---|
| January | under 1 | under 1 | 2 | 26° / 45°F |
| February | under 1 | under 1 | 3 | 29° / 51°F |
| March | 1 | under 1 | 7 | 33° / 59°F |
| April | 3 | 3 | 13 | 42° / 69°F |
| May | 6 | 4 | 13 | 52° / 76°F |
| June | 13 | 7 | 15 | 60° / 85°F |
| July | 10 | 3 | 10 | 66° / 90°F |
| August | 16 | 8 | 16 | 64° / 87°F |
| September | 15 | 12 | 18 | 58° / 81°F |
| October | 5 | 4 | 18 | 47° / 70°F |
| November | 1 | under 1 | 7 | 34° / 58°F |
| December | under 1 | under 1 | 2 | 29° / 50°F |
Deck stain does best in September. Low-temperature paint adds about 54 days a year here.
Towns near Gaithersburg compared
3 of the 6 nearest places get more painting days, the most in Takoma Park (111 a year, 16 miles southeast); 2 get fewer, down to 64 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. Rockville is read from the same station as Gaithersburg, so its numbers match; the real difference is the distance from that station.
| Place | From Gaithersburg | Painting days a year | Window | Station |
|---|---|---|---|---|
| Rockville, MD | 5 mi southeast | 70 | August to September | same station |
| Takoma Park, MD | 16 mi southeast | 111 | May to September | College Park Airport |
| Herndon, VA | 16 mi southwest | 64 | June | Washington Dulles Internation |
| College Park, MD | 17 mi southeast | 111 | May to September | College Park Airport |
| Vienna, VA | 18 mi south | 64 | June | Washington Dulles Internation |
| Falls Church, VA | 18 mi south | 76 | May to June | Ronald Reagan Washington Natl |
How Gaithersburg ranks in MD
Of 23 MD places with 10,000 people or more, Gaithersburg (population 70,686, 3rd largest) ranks 18th for painting days, 21 days below the state median of 90. The longest season in the state is Easton, 124 days, 66 miles southeast. The shortest is La Plata at 58. Switching to low-temperature paint here is worth 54 extra days, more than most of the summer months on their own.
Where these numbers come from
Daily records from Gaithersburg Montgomery Count (2 miles away), 2015 to 2024, NOAA Global Summary of the Day. A month is good at 12+ painting days and possible at 6+.