PaintDays

When can I paint the outside of my house?

Look up your town to see how many days each month are actually warm, dry and dew-free enough to paint or stain, counted from ten years of daily NOAA weather against the limits printed on the can.

Is it too late this year?

Share of the 3,206 places where each month is a good painting month.

January3%
February6%
March13%
April23%
May39%
June45%
July44%
August56%
September56%
October29%
November11%
December5%
  1. under 1Jan
  2. under 1Feb
  3. under 1Mar
  4. 1Apr
  5. 11May
  6. 16Jun
  7. 19Jul
  8. 18Aug
  9. 16Sep
  10. 5Oct
  11. 1Nov
  12. under 1Dec
Portland, OR. Each column is one month; the number is how many days in it, on average, a crew could actually paint. The underlined months are the window, June to September. The flagged month is when to book a painter, April, because the good crews fill up before the weather turns. All of Portland

What counts as a painting day

Painting day
Overnight low of 50°F or more, high no hotter than 90°F, no measurable rain, and the air far enough above the dew point that the wall will not be wet with dew the next morning. These are the limits printed on standard latex and oil cans.
Staining day
A painting day that follows a dry day, because stain goes onto bare wood and the wood has to have dried out first.
With low-temperature paint
The same, but the low only has to reach 35°F. Most premium latex lines sell a version labelled for this, and in shoulder months it can add a week or more.

A month is good at 12+ painting days, enough to absorb a rain-out. A house job is trusted to a month only if it has 2× the 4 days the job needs, since a below-average year will come.