Heat stress in Grand Prairie
Stretched across the DFW midcity, Grand Prairie's open lots and humid heat produce oppressive summer days where heat index readings climb fast.
Limit outdoor exertion. Drink water every 15 minutes and rest in shade.
Wet-bulb globe temperature via the Liljegren (2008) method. This page is cached and refreshes in the background, so the live badge below can be a few minutes ahead of it.
View Grand Prairie on the live mapReading heat stress in Grand Prairie
Wet-bulb globe temperature (WBGT) is the heat measure that actually tracks danger to the body. Unlike the plain air temperature on your phone, it folds in humidity, wind, and direct sun: the factors that decide whether your sweat can still cool you. It’s the standard the military, athletic associations, and occupational-safety bodies use to call when outdoor activity is no longer safe.
That matters in Grand Prairie because stretched across the DFW midcity, Grand Prairie's open lots and humid heat produce oppressive summer days where heat index readings climb fast. The number above is the live outdoor WBGT for the city right now; tap through to the live map to inspect any neighborhood, scrub the forecast hour by hour, and see the 7-day outlook.
How hot Grand Prairie usually gets
Across 2015–2024, Grand Prairie averaged a 93°F daily high in summer: 34th hottest of the 174 metros we track, and July is typically the warmest month.
Most of the heat here sits below the extremes: around 89 days a year top 90°F, and only about 14 reach 100°F.
At about 62% summer humidity, the air is damp enough to blunt how well sweat cools you on the worst afternoons.
A bad day runs well past a normal one, with 109°F recorded against a 93°F summer average.
Daily high temperatures and humidity from ERA5 reanalysis, 2015–2024 (hottest day in the sample: 2018-07-21). These are climate averages for context: the reading at the top of this page is the live one.
For school sports, UIL (University Interscholastic League) publishes UIL 2026-27 Heat Stress & Athletic Participation Required Plan, which uses wet-bulb globe temperature. Texas’s activity zones appear beside the live reading in the app.
Heat in Grand Prairie: common questions
How hot does it usually get in Grand Prairie?
Across 2015–2024, Grand Prairie averaged a 93°F daily high through summer, with about 89 days a year at or above 90°F and 14 at or above 100°F. July is typically the hottest month, and the hottest day in that sample reached 109°F. Figures are from ERA5 daily reanalysis.
When is the hottest time of year in Grand Prairie?
July has the highest average daily high in Grand Prairie. Summer humidity averages about 62%, enough to blunt how well sweat cools you on the hottest afternoons. Use the forecast on this page to plan around the specific days that matter.
Does Texas have a heat policy for school sports?
UIL (University Interscholastic League) publishes UIL 2026-27 Heat Stress & Athletic Participation Required Plan, which uses wet-bulb globe temperature. Texas’s activity zones appear beside the live reading in the app. Our WBGT is a modeled estimate rather than the on-site device reading a policy may call for, so check the association's own document for current requirements.
What is the WBGT in Grand Prairie right now?
The reading at the top of this page is the current wet-bulb globe temperature for Grand Prairie, Texas, computed from live weather by the Liljegren (2008) method and labeled with how recently it updated. For an exact reading at your own neighborhood, plus an hour-by-hour forecast, open the live map.
Why is WBGT more useful than the temperature for Grand Prairie?
Air temperature ignores humidity, wind, and sun: the things that decide whether heat is dangerous. Grand Prairie's climate (stretched across the DFW midcity, Grand Prairie's open lots and humid heat produce oppressive summer days where heat index readings climb fast.) is exactly why a single "feels-like" or thermometer reading can understate the real risk. WBGT captures all of it in one number.
When is heat most dangerous in Grand Prairie?
July is the peak month in Grand Prairie, and within a day heat stress is highest in the early-to-mid afternoon when sun load is greatest. About 89 days a year reach 90°F, so most of the risk sits in a handful of afternoons rather than across the whole season. Use the forecast on this page to find the window that works.
Put Grand Prairie’s live heat stress on your site
A self-updating WBGT badge for schools, teams, camps, and local sites: it always shows the current reading and links back here.
<iframe src="https://wetbulbtracker.com/embed/grand-prairie-tx" width="340" height="150" style="border:0" title="Live WBGT: Grand Prairie, TX" loading="lazy"></iframe>Paste it into any website. The badge updates itself and links back here. Add ?theme=light for light sites.