Will Pipes Freeze in Mahoning County, OH? 55 nights a Year
Freeze nights in Mahoning County
In a normal year Mahoning County, OH gets 55 nights at or below 20°F, the point where bare pipes in a garage, attic or outside wall start to freeze. That is more than 68% of US counties.
Risk level: Severe. The risk season runs November to April, worst in January.
It depends where the pipe is
| Pipe | Freezes near | Nights a year |
|---|---|---|
| Outdoor spigot, open crawlspace | 32°F | 138 nights |
| Bare pipe in garage, attic or outside wall | 20°F | 55 nights |
| Insulated pipe in unheated space | 10°F | 21 nights |
| Inside the heated house | 0°F | 6 nights |
Foam-sleeving a bare pipe in unheated space takes it from 55 nights of risk to 21 nights. A 12 ft heat-tape kit runs $17 to $37; an average burst-pipe repair is about $500.
Month by month
Nights at or below 20°F in a normal year.
First 32°F night is usually around 10/13, last around 05/02. For 20°F: 11/20 to 03/28.
How cold Mahoning County nights get
Average winter (Dec-Feb) low: 21°F; the coldest month, January, averages 18°F overnight. 8 months normally bring at least one night below 32°F (Jan, Feb, Mar, Apr, May, Oct, Nov, Dec). Nights below 10°F, cold enough to freeze insulated pipe in an unheated space, come in January, February, March, December: 21 nights a year, and 6 nights below zero.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 18°F | 20°F | 27°F | 37°F | 47°F | 56°F | 60°F | 59°F | 52°F | 41°F | 32°F | 25°F |
Mahoning County next to its neighbours
Mercer County, PA, 54 km northeast, gets 67 nights below 20°F to Mahoning County's 55 nights. Columbiana County, OH, 27 km south, gets 52 nights.
| County | Distance | Below 32°F | Below 20°F | Jan low |
|---|---|---|---|---|
| Mahoning County, OH | - | 138 nights | 55 nights | 18°F |
| Columbiana County, OH | 27 km south | 134 nights | 52 nights | 19°F |
| Trumbull County, OH | 33 km north | 133 nights | 47 nights | 18°F |
| Lawrence County, PA | 37 km east | 134 nights | 51 nights | 19°F |
| Portage County, OH | 40 km northwest | 128 nights | 48 nights | 17°F |
| Beaver County, PA | 51 km southeast | 121 nights | 39 nights | 20°F |
| Mercer County, PA | 54 km northeast | 156 nights | 67 nights | 16°F |
Mahoning County within OH
Mahoning County ranks 8 of 88 OH counties for nights below 20°F. The most is Williams County, OH at 61 nights, with a 19°F average winter low. The fewest is Scioto County, OH: 28 nights, winter lows near 24°F. At 1,163 ft, Mahoning County sits 248 ft above the state's median county elevation of 916 ft.
What to do here
- Treat it as a building fix, not a night-of routine: insulate, heat tape, seal crawlspace vents.
- An automatic leak shutoff pays for itself if one burst is avoided.
- Know where the main shutoff is before the first hard freeze.
Interior pipes have a threshold too: the four freeze points.
Where this comes from
NOAA 1991-2020 climate normals, blended from 3 nearby stations and adjusted for elevation; closest is Millport (4 mi NE), OH, 28 km away (fair match). A normal year, not tonight's forecast: check the forecast low for the night itself. Why elevation is part of the blend: how county numbers are made.