Will Pipes Freeze in Lyon County, KS? 41 nights a Year
Freeze nights in Lyon County
In a normal year Lyon County, KS gets 41 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 57% of US counties.
Risk level: Severe. The risk season runs November to March, worst in January.
It depends where the pipe is
| Pipe | Freezes near | Nights a year |
|---|---|---|
| Outdoor spigot, open crawlspace | 32°F | 115 nights |
| Bare pipe in garage, attic or outside wall | 20°F | 41 nights |
| Insulated pipe in unheated space | 10°F | 14 nights |
| Inside the heated house | 0°F | 2 nights |
Foam-sleeving a bare pipe in unheated space takes it from 41 nights of risk to 14 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 10/23, last around 04/15. For 20°F: 11/20 to 03/15.
How cold Lyon 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, December: 14 nights a year, and 2 nights below zero.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 19°F | 22°F | 32°F | 42°F | 53°F | 63°F | 67°F | 65°F | 56°F | 44°F | 32°F | 23°F |
Lyon County next to its neighbours
Chase County, KS, 41 km southwest, gets 46 nights below 20°F to Lyon County's 41 nights.
| County | Distance | Below 32°F | Below 20°F | Jan low |
|---|---|---|---|---|
| Lyon County, KS | - | 115 nights | 41 nights | 19°F |
| Chase County, KS | 41 km southwest | 119 nights | 46 nights | 18°F |
| Coffey County, KS | 45 km southeast | 115 nights | 43 nights | 19°F |
| Osage County, KS | 45 km northeast | 118 nights | 46 nights | 19°F |
| Morris County, KS | 50 km northwest | 122 nights | 47 nights | 19°F |
| Wabaunsee County, KS | 56 km north | 121 nights | 50 nights | 18°F |
| Greenwood County, KS | 64 km south | 118 nights | 43 nights | 19°F |
Lyon County within KS
Lyon County ranks 82 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 1,151 ft, Lyon County sits 375 ft below 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.
At this many nights, foam alone is not the answer: insulate or heat tape?.
Where this comes from
NOAA 1991-2020 climate normals, blended from 3 nearby stations and adjusted for elevation; closest is Emporia (3 mi NW), KS, 6 km away (close match). A normal year, not tonight's forecast: check the forecast low for the night itself. What a "fair" or "distant" station match means is in the method guide.