How Often Does DFW Actually Freeze?
The Real National Weather Service Numbers

Section 1: DFW's Actual Freeze Numbers, Not the Reputation

"DFW barely freezes" is the common assumption, and it's part of why so many local homes are under-protected for winter. The National Weather Service's own climate normals for DFW Airport put the real number at an average of 29.2 days per year with a minimum temperature at or below 32 degrees Fahrenheit - not a once-a-decade event, a near-monthly occurrence across a typical winter.

Those freezing days aren't spread evenly across the year. NWS's monthly breakdown shows January averaging 10.6 freezing days, December averaging 8.1, and February averaging 6.2 - together accounting for the large majority of DFW's annual freeze total, with November and March contributing only a handful of days each and the remaining months essentially none.

A separate NBC 5 meteorologist analysis of the same underlying DFW Airport station data puts the average closer to 33 freezing days in a typical season, with real year-to-year swings: the 2019-2020 winter saw 21 freezing days, while 2016-2017 recorded just 11 - the lowest on record. The exact count varies by source and averaging period, but every credible reading puts DFW's freeze count in the dozens of days per year, not the handful many homeowners assume.

Section 2: When DFW's Freeze Season Actually Starts and Ends

The average date of DFW's first freeze of the season is November 22, and the average last freeze falls around March 12 - a roughly 3.5-month window most years during which exposed pipe runs are genuinely at risk, not just during a single headline cold snap.

The extremes matter for planning too. DFW's earliest recorded freeze hit October 22, 1898, and the latest recorded freeze reached all the way to April 13 in both 1997 and 1957. On the other end, the record cold temperature ever measured at DFW Airport is -8 degrees Fahrenheit, set in February 1899 - a reminder that the region's coldest extremes, while rare, are on the historical record, not hypothetical.

Section 3: Why This Data Matters More Than the "DFW Doesn't Really Freeze" Assumption

DFW homes are generally not built to the same freeze-protection standard as homes in consistently cold climates, precisely because sustained hard freezes are the exception rather than the rule here - see our DFW burst pipes guide for the full mechanics of why that gap causes pipes to fail. Almost 30 freezing nights a year, concentrated into a roughly 15-week window, is enough repeated freeze-thaw stress on exposed or poorly insulated pipe runs to matter every single winter - not just during an outlier event like February 2021's Winter Storm Uri.

The practical takeaway: freeze prep in DFW isn't a once-a-decade precaution ahead of a rare severe event. Based on the NWS's own 29.2-day annual average, a typical DFW winter includes freezing conditions on close to one night in every twelve between late November and mid-March.

Section 4: Track This Winter's Freeze Risk Live

The numbers above are historical averages - for the current forecast, our free DFW Freeze Watch Widget pulls the live overnight low directly from the National Weather Service and flags freeze risk automatically, updated roughly hourly through the freeze season.