Address reportCitiesTexas › Grand Prairie

Grand Prairie, TX

Earthquake hazard, typical weather and growing season from public federal data. Population 183,372.

Flood zone: it depends on the exact parcel

There is no such thing as a flood zone for a whole city. Two houses on the same street can sit in different zones, and it is the single fact here that changes most over a short distance. So this page does not guess one.

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Earthquake hazard low

Design category B

Low seismic hazard. Earthquakes are infrequent and usually minor here, but the building code still applies light seismic detailing to new construction. The ASCE 7 Seismic Design Category here is B. (Short-period design value Ss ≈ 0.094 g — the standard headline measure of ground-shaking hazard.)

USGS Seismic Design Web Services (ASCE 7), assuming Site Class D — stiff or unknown soil. Real soil conditions can move the category either way.

Typical weather

94.5° in August, 34.3° in January

Thirty-year averages, not a forecast. Any individual year can differ substantially.

MonthHighLowRainSnow
Jan55°34.3°2.67"0.1"
Feb59.4°37.9°3.24"0.4"
Mar67.1°46°3.51"0"
Apr74.4°53.7°3.34"0"
May81.6°63.2°4.66"0"
Jun90°71.6°3.78"0"
Jul94.4°75.1°2.46"0"
Aug94.5°74.2°2.4"0"
Sep87.6°67.3°3.45"0"
Oct77°55.4°4.82"0"
Nov65°45.1°2.76"0"
Dec57°36.6°3"0.3"

NOAA/NCEI 1991–2020 U.S. Climate Normals — station ARLINGTON SIX FLAGS, TX US, 4.1 mi away.

Growing season zone 8b

253 frost-free days

Last spring frost around March 9, first fall frost around November 20. Roughly half of years see frost outside that window.

2023 USDA Plant Hardiness Zone Map and NOAA/NCEI 1991–2020 frost normals.

What this page does not tell you

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