Short answer
Atlanta's most dependable exterior painting stretches are usually late April through May and September through October. NOAA normals put average highs at 72°F in April and 73°F in October, and October is typically the driest month. Many current exterior paints go on as low as 35°F, but dew, pollen and afternoon heat still decide the day.
Atlanta's year, month by month, for exterior paint
NOAA's 1991 to 2020 normals for Atlanta show a long painting season with two soft spots: hot, stormy midsummer and the short, cold days of winter. The figures are for Hartsfield-Jackson; shaded lots and low ground run a little cooler.
| Month | Avg high | Avg low | Rain (in) | What it means for paint |
|---|---|---|---|---|
| January | 52°F | 34°F | 4.2 | Midday only, on dry, sunny days |
| February | 57°F | 38°F | 4.7 | Prep and small jobs; watch the overnight low |
| March | 65°F | 44°F | 4.8 | Pollen, plus the last freeze near March 23 on average |
| April | 72°F | 52°F | 3.4 | Strong once pollen settles |
| May | 80°F | 60°F | 3.7 | Strong month |
| June | 86°F | 68°F | 4.0 | Mornings and shaded walls |
| July | 89°F | 71°F | 5.3 | Wettest month; heat limits midday work |
| August | 88°F | 71°F | 3.9 | Like July, a little drier |
| September | 82°F | 65°F | 4.5 | Improves as the month goes on |
| October | 73°F | 54°F | 3.4 | Mild and dry, a strong month |
| November | 64°F | 44°F | 4.1 | Good early; first freeze averages November 13 |
| December | 54°F | 36°F | 3.9 | Like January |
What paint makers say about temperature
The temperature on the can is a floor, not a target. Sherwin-Williams says traditional latex needs temperatures above 60°F to cure properly, while its newer exterior lines can be applied and cure as low as 35°F, and those limits cover air, surface and paint temperature. Benjamin Moore's data sheet for Regal Select exterior says not to apply below 35°F and gives dry times measured at 77°F and 50% humidity: dry to the touch in 1 hour, ready to recoat in 4. It also warns that high humidity and cool temperatures stretch both.
Stains and mineral coatings have their own windows. Sherwin-Williams calls 70°F ideal for exterior staining, with a safe range of 50°F to 90°F, and KEIM's mineral paints list 41°F to 86°F.
The rule that catches most people is a different one: Sherwin-Williams says the temperature should stay above the dew point for at least 48 hours after application.
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Call (470) 876-1448Dew and cold nights ruin more paint days than cold mornings
A sunny 62°F afternoon looks like painting weather. The trouble arrives after sunset, when, as Sherwin-Williams puts it, dew forms on almost everything. Latex needs at least 4 hours of drying before moisture settles on it, and a coat laid on at 3 p.m. on a cool fall day may not get that. The company lists surfactant leaching, mildew growth, frosting and adhesion problems as the results of cold, damp application.
So on cool days we start on walls the sun has already dried and stop early, leaving each coat hours of warmth before evening. The cooler the day, the earlier the brushes go down.
Pollen season and the March rush
Spring is when most people want their house painted, and it is also when Atlanta's air turns yellow. Atlanta Allergy and Asthma recorded a pollen count of 14,801 on March 29, 2025, the highest in 35 years of counting, and the yellow film on cars and porches is pine pollen. It sticks to wet paint and to any surface rinsed the day before.
Atlanta's average last freeze falls on March 23, and it has come as late as April 25, so late March brings pollen and cold nights together. Heavy pollen weeks are good for scraping, sanding and wood repair; primer and finish coats go on after a fresh rinse once the counts drop.
Summer heat: working the shade around the house
July and August average highs of 89°F and 88°F, and July is the wettest month of the year. Paint on a sun-baked wall dries before it levels, which leaves lap marks and brush lines, and dark colors can blister when the siding under them is hot. Sherwin-Williams advises against painting in direct sun, especially in summer, and says never to stain in it.
The answer is following the shade: west walls in the morning, east walls in the afternoon, south walls early or late. That makes for shorter productive days, so summer jobs take longer on the calendar even when the weather stays dry.
Late fall and winter: short days and careful choices
Atlanta's first freeze comes around November 13 on average, and December and January average highs of 54°F and 52°F with lows in the mid 30s. Paints rated to 35°F make sunny winter afternoons workable, but every coat still needs dry hours before the dew, and a winter day offers fewer of them. Winter suits trim, front doors, shutters and wood repair: small jobs that can be timed to the warmest hours of a clear week.
Judging a single painting day from the forecast
- Surfaces are dry. Sherwin-Williams says to wait at least one day after a heavy rain.
- Air and surface stay above the paint's minimum through the coat and the night after.
- The temperature stays well above the dew point long enough for the coat to set before evening.
- No rain for at least the drying time on the label.
- Light wind and a low pollen count, so nothing blows into the wet coat.
- In summer, shade is available for the walls on the schedule.
If two or more of these fail, the day goes to prep instead of finish coats. Deck owners can find stain-specific timing in our deck stain and paint article.