Dallas

Dallas Heat Cranks Up Before Sunday Night Storm Slam

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Published on July 11, 2026
Dallas Heat Cranks Up Before Sunday Night Storm SlamSource: IcedCowboyCoffee, CC0, via Wikimedia Commons

Dallas is waking up to a hot start today with clear skies and temperatures already in the low-to-mid 80s. By mid-afternoon, the mercury is expected to push toward a high near 986F. South winds are light early, but the humidity will do the heavy lifting, sending the “feels like” temperature above 1006F during the hottest stretch of the day.

Afternoon Heat And Storm Timing

Forecasters expect highs near 986F today, with heat-index values topping out around 1046F this afternoon. Rain chances start to tick up tomorrow about 1 p.m., with showers and thunderstorms becoming more widespread Sunday night into Monday, July 13. Slow-moving storms could drop heavy rain in a short time and trigger localized flash flooding. The primary concern late Sunday into Monday is flash flooding, according to the National Weather Service Fort Worth.

How This Might Affect You

Try to avoid tough outdoor work between about 12 p.m. and 6 p.m., and shift heavy activity to the cooler morning or evening hours when you can. If you are planning to hit outdoor events tomorrow afternoon or next Monday, have a quick backup plan for shelter. Downpours may fire up with little warning, and streets can flood where storms stall out.

Where To Find Relief

Anyone needing a break from the heat can use City of Dallas public facilities, including recreation centers and libraries, as cooling sites during regular business hours. Some of these locations have backup generators, according to the City of Dallas. If you or a neighbor has a health condition that makes this kind of heat risky, move plans indoors and call 2-1-1 to connect with local assistance.

What To Watch Next

The main window for active weather arrives tomorrow night into Next Monday, when the heaviest rain potential lines up. Storms should gradually back off by midweek, with highs sliding back into the mid-to-upper 90s by late week. Check back here for updates if any watches or warnings are issued.

Dallas-Weather & Environment