A little context for your time outside
Arizona & Texas Patio Climate Data
Compare monthly normal daily high air temperatures at Phoenix Sky Harbor, Dallas/Fort Worth, and Houston Intercontinental. We’ve brought the NOAA/NWS 1991–2020 normals together to help you understand the seasonal pattern behind patio planning.
3 weather stations · 12 months each · 36 published values
When normal highs peak
These are monthly averages of daily high air temperatures—not record highs or temperatures measured on furniture.
Phoenix Sky Harbor
106.5°FJuly · peak monthly normal high
Dallas/Fort Worth
95.8°FAugust · peak monthly normal high
Houston Intercontinental
94.9°FAugust · peak monthly normal high
The seasonal picture
Monthly normal daily highs, in °F
Phoenix has the highest monthly normal high of these stations throughout the year. Dallas/Fort Worth and Houston follow different seasonal paths; neither Texas station represents the whole state.
- Phoenix Sky Harbor
- Dallas/Fort Worth
- Houston Intercontinental
| Month | Phoenix | DFW | Houston |
|---|---|---|---|
| Jan | 67.6 | 56.5 | 63.8 |
| Feb | 70.8 | 60.9 | 67.8 |
| Mar | 78.1 | 68.6 | 74.0 |
| Apr | 85.5 | 76.1 | 80.1 |
| May | 94.5 | 83.6 | 86.9 |
| Jun | 104.2 | 91.5 | 92.3 |
| Jul | 106.5 | 95.6 | 94.5 |
| Aug | 105.1 | 95.8 | 94.9 |
| Sep | 100.4 | 88.6 | 90.4 |
| Oct | 89.2 | 78.4 | 82.8 |
| Nov | 76.5 | 66.6 | 72.6 |
| Dec | 66.2 | 57.9 | 65.3 |
Download all 36 values as a CSV · Includes station, month, normal period, temperature, and the original source URL.
A longer season of high temperatures
At Phoenix Sky Harbor, monthly normal highs reach at least 90°F in May, June, July, August, and September. At Dallas/Fort Worth, those months are June, July, and August. At Houston Intercontinental, they are June, July, August, and September.
We use 90°F as a simple comparison marker. It is not a furniture rating, a safety cutoff, or a count of days above that temperature. A monthly average also hides the variation between individual days.
For your own patio, use this comparison as background when thinking about the seasons you spend outside. Then consider the shade and layout of your actual space, check local weather, and read the dimensions and care information for the products you’re considering.
Our Arizona outdoor furniture guide and Texas patio furniture guide explain what to check before ordering. The climate figures here do not test or rank furniture materials.
How we put this together
Sources, method, and limits
We compiled the published monthly normal daily high temperatures for the 1991–2020 period at the three named airport stations. Each station contributes one value per month, giving 36 values in this comparison. We retained the Fahrenheit values to one decimal place as published by NOAA/NWS.
We identified each station’s peak by selecting its highest monthly value. We identified the months at or above 90°F by comparing each published monthly value with that marker. We did not model missing months or combine the stations into a statewide average.
The source data describe long-term outdoor air temperatures. They do not measure current forecasts, humidity, ultraviolet exposure, furniture surface temperatures, product durability, or heat resistance. They also do not account for a specific patio’s shade, exposure, or local conditions.
- Phoenix Sky Harbor: NOAA/NWS monthly normals
- Dallas/Fort Worth: NOAA/NWS monthly normals
- Houston Intercontinental: NOAA/NWS monthly normals
Source data checked September 6, 2026. Normal period: 1991–2020. NWS reuse terms.
Questions about the data
What does a monthly normal daily high mean?
It is the long-term average of daily maximum air temperatures for a given month over the 1991–2020 normal period. It describes a typical seasonal pattern at the named station, rather than the temperature on a particular day.
Do these figures tell me how hot a chair will feel?
No. Air temperature is different from furniture surface temperature. This dataset does not measure furniture, ultraviolet exposure, shade, humidity, or any material’s performance. It cannot establish a safe surface temperature or support a heat-resistance claim.
Does one station represent all of Arizona or Texas?
No. We compare Phoenix Sky Harbor, Dallas/Fort Worth, and Houston Intercontinental only. Conditions can differ across a city, between cities, and at your own patio. Use local forecasts for current conditions.
Can I reuse this table in an article or patio guide?
Yes. The source measurements are public NOAA/NWS data. Link to the original sources and this comparison, preserve the station names and 1991–2020 period, and make clear that your work is not an official NOAA/NWS product. The CSV includes a source URL on every row.
Put your patio dimensions to work
Climate is only part of the picture. Try our furniture fit calculator to compare a simple seating layout with your available space, then browse the product details before you order.