How extreme does Grand Prairie's weather get?

The hottest, coldest, wettest and snowiest days Grand Prairie has recorded — the outer limits of what its weather can do, and how far they sit beyond a normal day.

Based on 42 years of daily weather observations (1984–present), from the Joe Pool Lake station 12 km away. Updated through March 2026 — an all-time extreme only changes when a more extreme day actually occurs, so some dates are old. That is normal, not stale data.

The four kinds of extreme

The hottest, coldest, wettest and snowiest single days Grand Prairie has recorded — each shown against what a normal day that time of year looks like.

🔥 Hottest day

112°F Sep 5, 2000

That is about 22°F hotter than a normal September afternoon in Grand Prairie (typical high near 90°F).

The three most extreme on record

1 112°F Sep 5, 2000

2 110°F Jul 13, 1998

3 110°F Aug 2, 1998

❄️ Coldest night

0°F Jul 14, 2003

About 73°F colder than a normal July night in Grand Prairie (typical low near 73°F).

The three most extreme on record

1 0°F Jul 14, 2003

2 0°F Aug 25, 2003

3 0°F Sep 29, 2003

🌧️ Most rain in one day

12.05 in Jul 29, 2004

More rain in a single day than Grand Prairie usually gets in the whole month of July (typical July total about 2.3 in).

The three most extreme on record

1 12.05 in Jul 29, 2004

2 8.05 in Oct 17, 2018

3 7.90 in Sep 25, 2018

How hot and cold it gets, month by month

The shaded band is the normal range of daily temperatures for each month. The dots show the most extreme it has ever been — so you can see how far beyond a normal day the records really sit.

normal range of daily temperatureshottest ever recordedcoldest ever recorded

Grand Prairie's record heat sits well above even a hot day for the season — September's 112°F is about 22°F beyond a normal hot afternoon. Its record cold is just as far below a normal winter night — the dots mark how rare each extreme really is.

In plain terms

In a normal year, Grand Prairie's warmest days reach the high 90s°F and its coldest nights drop to the low 30s°F. But across the record it has gone as high as 112°F and as low as 0°F. A single day has delivered over 12 inches of rain. Those are the outer edges worth knowing if you are moving here, planning a trip, or thinking about a house.

Methodology & sources

Temperature & precipitation — the official 1991–2020 climate normals from NOAA's U.S. Climate Normals, measured at Dal-ftw Wscmo AP (NOAA GHCN station USW00003927), about 17 km from the city centre.

How we build these numbers →

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