Pipes typically start freezing once outdoor temps sit at 20°F or colder for six hours straight. Missoula hits that mark most winters by late November.
Why Your Plumbing Is More Exposed Than You Think
Water expands roughly nine percent as it turns to ice. That splits copper, PEX, and galvanized pipe alike, usually at a joint where pressure has nowhere to go. The pipes most at risk in a Montana home run through unheated crawl spaces, exterior walls, or out to hose bibs.
Nationally, State Farm logged over 20,000 frozen pipe claims between 2024 and mid 2025, averaging north of $30,000 per claim.
The Fall Checklist
Run through this before your first hard freeze, ideally before Halloween:
Task | Why it matters |
Disconnect and drain outdoor hoses | Trapped water in a hose bib backs up into the line and splits it |
Insulate exposed pipes in crawl spaces and garages | Foam sleeves buy hours during a cold snap |
Seal crawl space vents and foundation gaps | Cold air infiltration is the number one cause we see |
Service your furnace | A furnace that quits mid January is how a whole house freezes. |
Flush and inspect your water heater | Sediment buildup stresses the tank right when demand peaks |
Know your main shutoff valve location | If something does let go, this is what saves your floors |
Let faucets drip during a hard freeze | Moving water resists freezing far better than still water |
Consider heat trace cable, an electric wrap that keeps a pipe above freezing, for any line that’s frozen before or sits in an uninsulated crawl space. It’s cheap insurance next to a repipe.
What We Hear From Missoula Homeowners
A fall inspection costs less than a single hour of emergency labor. It’s the cheapest call you’ll make all winter.
We’ve built our whole business around showing up the same day, with a truck stocked to fix the problem on the first visit rather than schedule a callback.
That’s the standard we hold every technician to, whether you’re in Missoula, Lolo, Frenchtown, Linda Vista, the South Hills, Bonner, Clinton, etc.
Don’t Wait for the Cold
Get your furnace and pipes checked now, while scheduling is easy and there’s no stress. Call Right Now Plumbing and Heating at (406) 214 8904 to book a fall inspection.
Frequently Asked Questions
At what temperature do pipes actually freeze in Missoula? Exposed pipes typically freeze once outdoor temps hold at 20°F or below for about six hours.
Which pipes are most likely to freeze first? Lines in unheated crawl spaces, exterior walls, garages, and outdoor hose bibs freeze first because they get the least residual heat from the house.
Should I leave my faucet dripping during a cold snap? Yes. Moving water is far more resistant to freezing than still water sitting in a pipe.
How much does frozen pipe damage typically cost? Recent insurance data shows average frozen pipe claims exceeding $30,000 once water damage, drywall, and flooring repairs are factored in.
Do I need heat trace cable on every pipe? No. It’s worth it on pipes that have frozen before or sit in uninsulated crawl spaces and garages. Most interior lines are fine with standard insulation.
What’s the single best thing I can do this fall? Book a furnace and plumbing inspection before your first hard freeze.
Written by the owner of Right Now Plumbing and Heating, serving Missoula and the surrounding valley for over 20 years.
Sources: State Farm Newsroom, “Frozen Pipes? Not So Nice!” (2026); NOAA/Current Results Missoula climate data; Right Now Plumbing and Heating Google Business Profile reviews.