When to paint a house exterior in Hartland, WI
When to paint in Hartland, WI
A short season: book early and expect weather delays. The painting window is July to August, with 2 good months a year. The best month is July, at about 16 painting days. Book a painter by May.
If you want the house done in July to August, call for quotes in May or earlier; a job pushed past August is likely to wait until next year. For a deck, the months with enough staining days to spare are Jun, Jul, Aug, Sep.
- under 1Jan
- under 1Feb
- under 1Mar
- 1Apr
- 4May
- 9Jun
- 16Jul
- 15Aug
- 7Sep
- 2Oct
- 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 | 16° / 29°F |
| February | under 1 | under 1 | 1 | 16° / 34°F |
| March | under 1 | under 1 | 1 | 27° / 45°F |
| April | 1 | 1 | 6 | 35° / 57°F |
| May | 4 | 3 | 12 | 47° / 70°F |
| June | 9 | 6 | 13 | 57° / 79°F |
| July | 16 | 13 | 17 | 61° / 82°F |
| August | 15 | 13 | 17 | 59° / 80°F |
| September | 7 | 7 | 15 | 54° / 75°F |
| October | 2 | 2 | 10 | 41° / 61°F |
| November | 1 | 1 | 4 | 30° / 48°F |
| December | under 1 | under 1 | under 1 | 23° / 37°F |
Deck stain does best in August. Low-temperature paint adds about 42 days a year here.
Towns near Hartland compared
4 of the 6 nearest places get more painting days, the most in Pewaukee (77 a year, 5 miles southeast). 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. Oconomowoc, Richfield are read from the same station as Hartland, so their numbers match; the real difference is the distance from that station.
| Place | From Hartland | Painting days a year | Window | Station |
|---|---|---|---|---|
| Pewaukee, WI | 5 mi southeast | 77 | June to September | General Mitchell Internationa |
| Lisbon, WI | 6 mi northeast | 77 | June to September | General Mitchell Internationa |
| Sussex, WI | 6 mi east | 77 | June to September | General Mitchell Internationa |
| Waukesha, WI | 8 mi southeast | 77 | June to September | General Mitchell Internationa |
| Oconomowoc, WI | 8 mi west | 55 | July to August | same station |
| Richfield, WI | 11 mi northeast | 55 | July to August | same station |
How Hartland ranks in WI
Of 98 WI places with 10,000 people or more, Hartland (population 10,203, 96th largest) ranks 95th for painting days, 15 days below the state median of 69. The longest season in the state is Appleton, 111 days, 81 miles north. The shortest is Superior at 29. Switching to low-temperature paint here is worth 42 extra days, more than most of the summer months on their own.
Where these numbers come from
Daily records from Watertown Municipal Airport (19.7 miles away), 2015 to 2024, NOAA Global Summary of the Day. A month is good at 12+ painting days and possible at 6+.