Will Pipes Freeze in Sarpy County, NE? 66 nights a Year
Freeze nights in Sarpy County
In a normal year Sarpy County, NE gets 66 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 75% 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 | 136 nights |
| Bare pipe in garage, attic or outside wall | 20°F | 66 nights |
| Insulated pipe in unheated space | 10°F | 32 nights |
| Inside the heated house | 0°F | 11 nights |
Foam-sleeving a bare pipe in unheated space takes it from 66 nights of risk to 32 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 10/18, last around 04/21. For 20°F: 11/14 to 03/21.
How cold Sarpy County nights get
Average winter (Dec-Feb) low: 16°F; the coldest month, January, averages 14°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: 32 nights a year, and 11 nights below zero.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 14°F | 17°F | 28°F | 39°F | 51°F | 62°F | 66°F | 63°F | 54°F | 41°F | 29°F | 19°F |
Sarpy County next to its neighbours
Mills County, IA, 42 km east, gets 69 nights below 20°F to Sarpy County's 66 nights. Douglas County, NE, 21 km north, gets 62 nights.
| County | Distance | Below 32°F | Below 20°F | Jan low |
|---|---|---|---|---|
| Sarpy County, NE | - | 136 nights | 66 nights | 14°F |
| Douglas County, NE | 21 km north | 134 nights | 62 nights | 15°F |
| Cass County, NE | 23 km south | 139 nights | 66 nights | 14°F |
| Mills County, IA | 42 km east | 144 nights | 69 nights | 12°F |
| Saunders County, NE | 46 km west | 151 nights | 72 nights | 12°F |
| Washington County, NE | 48 km north | 140 nights | 68 nights | 13°F |
| Otoe County, NE | 53 km south | 146 nights | 72 nights | 13°F |
Sarpy County within NE
Sarpy County ranks 79 of 93 NE counties for nights below 20°F. The most is Sioux County, NE at 114 nights, with a 11°F average winter low. The fewest is Fillmore County, NE: 55 nights, winter lows near 19°F. At 1,172 ft, Sarpy County sits 838 ft below the state's median county elevation of 2,010 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.
The dates to be done by: when freeze season starts and ends.
Where this comes from
NOAA 1991-2020 climate normals, blended from 3 nearby stations and adjusted for elevation; closest is Gretna (4 mi NE), NE, 9 km away (close 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.