Local rulesWhen to paint a house exterior in Fort Wayne
The safe window for standard exterior paint in Fort Wayne runs from about May 15 to September 24. Those are the dates when the normal overnight low at the airport stays at 50°F or higher, and paint made for cold weather adds a few weeks on each end.
The two temperature lines
Latex paint dries in an hour and then spends a day or two forming a tough film. Cold stops that. The USDA Forest Products Laboratory's rule for standard latex is 50°F at the time of painting and for the 24 hours after. Many current exterior paints are rated lower: Sherwin-Williams Duration, Benjamin Moore Regal Select and Behr Premium Plus all list 35°F as their minimum.
The night is what counts. A 62°F October afternoon followed by a 33°F night is the classic way to ruin a paint job, because the film stops forming as the wall cools. Paint makers also want the surface at least 5°F above the dew point, and one common primer rule is stricter than the paint's: standard latex primers still need 50°F.
Fort Wayne's painting calendar
These are 1991 to 2020 normals for Fort Wayne International Airport, from the National Centers for Environmental Information.
| Month | Normal high | Normal low | Days with rain or snow | Exterior painting |
|---|---|---|---|---|
| January | 33°F | 18°F | 13 | No |
| February | 37°F | 21°F | 11 | No |
| March | 48°F | 29°F | 12 | No |
| April | 61°F | 39°F | 13 | Cold-rated paint only, after about April 18, on dry stretches |
| May | 72°F | 50°F | 14 | Yes from mid-month. The wettest month, so expect rain delays. |
| June | 81°F | 60°F | 12 | Yes |
| July | 84°F | 64°F | 10 | Yes. Late starts for dew, and no painting in direct hot sun. |
| August | 82°F | 61°F | 9 | Yes |
| September | 76°F | 53°F | 9 | Yes. The driest stretch of the season. |
| October | 64°F | 43°F | 10 | Cold-rated paint only, until about October 25 |
| November | 49°F | 33°F | 11 | No |
| December | 38°F | 24°F | 12 | No |
Worked from the daily normals: the low stays at 50°F or higher from May 15 to September 24, and at 40°F or higher from April 18 to October 25. The National Weather Service puts Fort Wayne's average last spring freeze at April 25 and its average first fall freeze at October 15. Freezes have come as late as May 27 and as early as September 23, so the shoulder weeks are a gamble every year.
Rain, dew and hot siding
Temperature is only one of three things a painter watches.
- Rain. May, June and July are Fort Wayne's wettest months, at 4 to 4.6 inches each. Sherwin-Williams advises waiting at least a day after a heavy rain, and longer on wood and brick, which hold more water than aluminum or vinyl.
- Dew. At 6 a.m. in July the normal temperature here is about 65°F and the normal dew point about 62°F. Siding that close to the dew point is wet. Painters start on the sunny side once it dries and stop in time for the paint to set before evening dew. Most paints need about four hours.
- Heat. Fort Wayne averages about 16 days a year at 90°F or hotter. Paint put on a hot wall in direct sun dries before it grips. Crews follow the shade around the house.
When to ask for a quote
Any time. A painter can judge siding, trim and prep in January as well as in June. If you want a particular month, ask early.
Brick and murals follow their own versions of this calendar. Limewash wants 50 to 90°F, and outdoor mural paint should not go on below 50°F. See brick house painting and mural painting. For siding and trim, start with exterior house painting in Fort Wayne.
Get a written painting quote
Three questions and no email address. Then:
- A local painter calls youMonday to Saturday, to ask about the house and the job.
- Photos or a walk-aroundSmall interior jobs can often be priced from pictures. Exteriors get walked.
- The price in writingWith the prep, the paint and the dates. You decide from there.
More guides
Thinking about next summer's exterior?
Outdoor painting weather in Fort Wayne runs from about mid-May to late September. Ask for a price over the winter and you can pick your dates.