Will Pipes Freeze in McPherson County, KS? 47 nights a Year
Freeze nights in McPherson County
In a normal year McPherson County, KS gets 47 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 62% 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 | 126 nights |
| Bare pipe in garage, attic or outside wall | 20°F | 47 nights |
| Insulated pipe in unheated space | 10°F | 15 nights |
| Inside the heated house | 0°F | 3 nights |
Foam-sleeving a bare pipe in unheated space takes it from 47 nights of risk to 15 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 10/24, last around 04/18. For 20°F: 11/18 to 03/16.
How cold McPherson County nights get
Average winter (Dec-Feb) low: 21°F; the coldest month, January, averages 19°F overnight. 7 months normally bring at least one night below 32°F (Jan, Feb, Mar, Apr, Oct, Nov, Dec). Nights below 10°F, cold enough to freeze insulated pipe in an unheated space, come in January, February, March, November, December: 15 nights a year, and 3 nights below zero.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 19°F | 22°F | 31°F | 41°F | 52°F | 63°F | 68°F | 66°F | 58°F | 44°F | 31°F | 22°F |
McPherson County next to its neighbours
Ellsworth County, KS, 59 km northwest, gets 59 nights below 20°F to McPherson County's 47 nights. Harvey County, KS, 43 km southeast, gets 42 nights.
| County | Distance | Below 32°F | Below 20°F | Jan low |
|---|---|---|---|---|
| McPherson County, KS | - | 126 nights | 47 nights | 19°F |
| Harvey County, KS | 43 km southeast | 115 nights | 42 nights | 20°F |
| Saline County, KS | 44 km north | 117 nights | 40 nights | 20°F |
| Marion County, KS | 48 km east | 119 nights | 42 nights | 21°F |
| Rice County, KS | 49 km west | 122 nights | 44 nights | 20°F |
| Ellsworth County, KS | 59 km northwest | 137 nights | 59 nights | 18°F |
| Reno County, KS | 62 km southwest | 126 nights | 47 nights | 19°F |
McPherson County within KS
McPherson County ranks 61 of 105 KS counties for nights below 20°F. The most is Rawlins County, KS at 83 nights, with a 16°F average winter low. The fewest is Cherokee County, KS: 27 nights, winter lows near 26°F. At 1,487 ft, McPherson County sits close to the state's median county elevation of 1,526 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 McPherson, KS, 4 km away (close match). A normal year, not tonight's forecast: check the forecast low for the night itself. How a county figure is built from stations: how the numbers are made.