Climate & Weather in Dallas
Dallas has a humid subtropical climate with real seasonal swings -- genuinely hot summers, mild-to-cool (occasionally sharply cold) winters, and an active spring severe-weather season. Per multiple climate-data sources reviewed August 2026, January averages a high around 56°F and low around 39°F, while July and August run hottest, averaging around 85-86°F with highs often in the mid-90s -- and Dallas sees an average of 22 days a year where the temperature reaches 100°F or higher.
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Learn moreSummer: Genuinely Hot
Dallas summers are a real, sustained heat commitment: July averages around 85°F with highs often in the mid-90s and lows in the upper 70s, while August -- the hottest month -- averages around 86°F. Dallas sees an average of 22 days a year that reach 100°F or higher, a genuine adjustment for anyone relocating from a milder-summer climate, and air conditioning is a non-optional utility cost for a large share of the year as a direct result (see the cost-of-living topic page).
Winter: Mild Overall, With Real Cold Snaps
January, Dallas's coldest month, averages a high around 56°F and a low around 39°F -- genuinely mild by most northern-U.S. standards, with winters described by relocation-focused sources as lasting "a few days, sometimes even hours" of true cold rather than a sustained season. That said, Dallas is not immune to serious cold: Winter Storm Uri (February 2021) brought a record -2°F to the city alongside a statewide grid failure (see the flood-hurricane-risk topic page) -- a rare but real illustration that "mild winters" doesn't mean "no winter risk at all."
Spring: Peak Severe Weather Season
Spring (roughly March through May) is when North Texas sees the most severe thunderstorms, large hail, and tornadoes, as warm, moist Gulf air collides with cold, dry continental air moving down from Canada -- the atmospheric setup that produces the supercell thunderstorms responsible for both tornado and hail risk here (see the flood-hurricane-risk topic page). May is also the most flood-active month in Dallas. This is the single most weather-eventful season of the year in North Texas, worth planning around for outdoor events, moving timelines, and home-maintenance scheduling alike.
Rainfall and Flash-Flood Risk
Dallas's rainfall pattern includes real flash-flood risk, illustrated dramatically by the catastrophic August 20-21, 2026 event that dropped more than 15 inches of rain on parts of the metro in under 24 hours (see the flood-hurricane-risk topic page for full detail). Flash floods account for roughly 91% of all recorded flood events in the city -- intense, short-duration rainfall overwhelming drainage capacity is a more common pattern here than slow-rising riverine flooding, though the Trinity River does also flood in its own right during major events.
What Dallas Doesn't Have: Hurricanes
Worth stating plainly given how often Florida-relocation content leans on hurricane risk: Dallas sits roughly 250 miles inland and does not experience hurricane landfalls or storm surge. Its serious weather hazards are flash flooding, severe thunderstorms, tornadoes, hail, and (rarely) extreme winter cold -- a genuinely different risk profile than a Gulf Coast city, not a lesser or greater one, just different, and worth evaluating on its own terms rather than by analogy to coastal hurricane risk.
Key takeaways
- January averages 56°F/39°F (high/low); July/August average around 85-86°F with highs often in the mid-90s -- Dallas averages 22 days a year at or above 100°F.
- Winters are mild overall but not risk-free -- Winter Storm Uri (Feb. 2021) brought a record -2°F to Dallas alongside a statewide ERCOT grid failure.
- Spring (March-May) is peak severe-thunderstorm, hail, and tornado season, plus the year's most flood-active month (May) -- the single most weather-eventful season in North Texas.
- Flash floods account for ~91% of Dallas's recorded flood events, illustrated by the catastrophic August 20-21, 2026 flood (15+ inches of rain in under 24 hours).
- Dallas does not experience hurricanes or storm surge -- its real hazard profile is flash flooding, severe thunderstorms, tornadoes, and hail, a genuinely different risk set than a Gulf Coast city's.
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