Burst Pipe & Freeze Risk in St. Louis, MO

What this means for your pipes in St. Louis: St. Louis sees 81 freezing days a year, ranking about middle-of-the-pack (#5 of 20 we track) for freeze exposure. Every one of those days is a real chance for exposed or poorly insulated pipes — in crawlspaces, attics, exterior walls, or unheated garages — to freeze and split. The real fix is insulating exposed lines and knowing where your main shutoff valve is before an emergency, not just running a trickle of water and hoping.

Source: NOAA National Centers for Environmental Information, 1991-2020 U.S. Climate Normals, station GHCND:USC00237452. If you have a burst pipe right now, shut off your main water valve first — a licensed local plumber can advise on insulation and prevention once the immediate emergency is handled.