Best Time of Year to Paint a House Exterior in North Texas and Southern Oklahoma

Quick answer: In North Texas and Southern Oklahoma, April, May and October are usually the most reliable months to paint a house exterior. NOAA's 1991 to 2020 climate normals put average highs in the 70s to low 80s and lows in the 50s and 60s then, inside most paint makers' ranges. Summer heat and winter cold shrink the window.

What temperatures do paint makers allow?

Each paint's label and technical data sheet set its limits. Published guidance from three major manufacturers:

Two points matter most in our area:

• Surface temperature can differ from air temperature. Behr notes summer sun can push surfaces more than 20°F above the air. Benjamin Moore says a dark wall in direct sun can be much hotter than the air and suggests checking with an infrared thermometer.
• The overnight low counts. Paint keeps curing after you put the brush down. A warm afternoon followed by a near-freezing night can still cause problems, which is why Sherwin-Williams looks 48 hours ahead.

What does the local climate data say, month by month?

NOAA's 1991 to 2020 U.S. Climate Normals for three weather stations in our service area (average daily high / average daily low, in °F, and average monthly precipitation):

Stations: Denton 2 SE (USC00412404), Gainesville 5 ENE (USC00413420), Ardmore (USC00340292). Check the actual forecast before painting.

Towns between and around these stations, such as Lone Grove, Lake Kiowa, Lindsay, Sanger, Krum, Corinth, Lake Dallas, Highland Village, Argyle and Lantana, follow the same general pattern.

Can you paint a house exterior in summer here?

Yes, with care. In July and August, average highs at all three stations are about 94°F to 96°F, above the 90°F upper limit Behr lists as typical for latex paint. Direct sun on fresh paint can cause premature drying, poor adhesion and bubbling (Behr), and too much heat can cause wrinkling, blistering and peeling (Benjamin Moore).

What helps in summer:

• Start early in the day.
• Follow the shade around the house so you are not painting a wall in full sun.
• Save south and west walls for when they are shaded.
• Paint metal (railings, doors) early, while it is coolest. Behr says if it is too hot to touch, it is too hot to paint.

Can you paint a house exterior in winter here?

Sometimes. Average January lows are about 31°F to 34°F across the three stations, so many nights dip near or below freezing. Some paints, like Sherwin-Williams Emerald Exterior, are rated down to 35°F, but the air, the surface and the paint all need to stay above that, and temperatures should not drop below 35°F for 48 hours.

What helps in winter:

• Wait for a stretch of mild days and nights, not just one warm afternoon.
• Paint the middle of the day and stop early enough for the paint to set before evening dew.
• Keep paint stored indoors. Benjamin Moore notes a can left in a cold garage stays cold for a while.
• Use a product rated for low temperatures, and read its label.

Winter is also a good time to get interior painting or popcorn ceiling removal done while you wait for spring.

Does humidity matter?

Yes. Benjamin Moore and Sherwin-Williams both say the surface should be at least 5°F above the dew point, the temperature where moisture condenses. On humid mornings, siding can be damp even when it is not raining. Behr warns that overnight condensation can cause streaks, poor adhesion or mildew, especially on shaded walls, and suggests starting in late morning on muggy days.

What if it rains after painting?

Sherwin-Williams' Emerald Exterior sheet says not to paint if rain is expected within 2 to 3 hours. If rain catches fresh paint, Benjamin Moore advises stopping, waiting for the surface to dry, and leaving any bubbles alone. If the bubbles do not go down in a day or two, they need to be scraped, sanded and repainted.

In our area, May has the highest average rainfall at all three stations, so build a little slack into spring schedules.

When should you book an exterior painting job?

Book a few weeks before the season you want. Late winter is a good time to get estimates for spring work, and late summer is a good time to plan fall work. That gives time to choose colors, settle the scope in writing, and pick dates that match the forecast.

Frequently asked questions

What is the best month to paint a house exterior in Texas?

In North Texas, April, May and October are usually best. NOAA normals for Denton show average highs of about 76°F in April, 83°F in May and 78°F in October, with lows in the 50s and 60s.

Is it too hot to paint outside in a Texas summer?

It can be. Average July and August highs in Denton are about 96°F, and Behr lists 90°F as a typical upper limit for latex paint. Painting early in the day and on shaded walls helps.

How cold is too cold to paint a house exterior?

Sherwin-Williams Emerald Exterior can go on at 35°F if the air, surface and paint stay above 35°F for 48 hours. Behr lists 50°F as typical for latex and acrylic paint. Check your paint's label.

Can you paint the outside of a house in winter in Oklahoma?

Sometimes, on mild stretches. NOAA normals for Ardmore show an average January low of 31.5°F, so you need a forecast that stays above the paint's minimum, often 35°F to 50°F, for a couple of days.

Can you paint outside when it is humid?

Yes, if the surface is dry and at least 5°F above the dew point, which is the industry rule Benjamin Moore and Sherwin-Williams cite. Avoid early mornings when walls are damp with dew.

What time of day is best to paint a house exterior?

On mild days, mid-morning to mid-afternoon, after dew dries and before evening moisture. In summer, start early and follow the shade.

Sources

1. NOAA NCEI, U.S. Climate Normals 1991-2020, monthly normals (MLY-TMAX-NORMAL, MLY-TMIN-NORMAL, MLY-PRCP-NORMAL), pulled via the NCEI Access Data Service
2. Sherwin-Williams, Emerald Exterior Acrylic Latex, Product Data Sheet (dated 03/2026)
3. Benjamin Moore, "Temperature Guide for Exterior Painting"
4. Behr Pro, "Tips for Successful Hot Weather Painting", Sep 19, 2023