Will Pipes Freeze in Sublette County, WY? 165 nights a Year
Freeze nights in Sublette County
In a normal year Sublette County, WY gets 165 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 100% of US counties.
Risk level: Severe. The risk season runs September to May, worst in January.
It depends where the pipe is
| Pipe | Freezes near | Nights a year |
|---|---|---|
| Outdoor spigot, open crawlspace | 32°F | 264 nights |
| Bare pipe in garage, attic or outside wall | 20°F | 165 nights |
| Insulated pipe in unheated space | 10°F | 102 nights |
| Inside the heated house | 0°F | 55 nights |
Foam-sleeving a bare pipe in unheated space takes it from 165 nights of risk to 102 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.
How cold Sublette County nights get
Average winter (Dec-Feb) low: 1°F; the coldest month, January, averages 0°F overnight. 12 months normally bring at least one night below 32°F (Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec). Nights below 10°F, cold enough to freeze insulated pipe in an unheated space, come in January, February, March, April, October, November, December: 102 nights a year, and 55 nights below zero.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 0°F | 1°F | 10°F | 21°F | 28°F | 35°F | 40°F | 38°F | 30°F | 22°F | 11°F | 1°F |
Sublette County next to its neighbours
Lincoln County, WY, 87 km southwest, gets 148 nights.
| County | Distance | Below 32°F | Below 20°F | Jan low |
|---|---|---|---|---|
| Sublette County, WY | - | 264 nights | 165 nights | 0°F |
| Lincoln County, WY | 87 km southwest | 245 nights | 148 nights | 2°F |
| Fremont County, WY | 111 km east | 184 nights | 105 nights | 8°F |
| Bear Lake County, ID | 127 km southwest | 213 nights | 109 nights | 7°F |
| Caribou County, ID | 133 km west | 222 nights | 111 nights | 10°F |
| Teton County, WY | 148 km north | 279 nights | 163 nights | 2°F |
| Sweetwater County, WY | 150 km southeast | 192 nights | 95 nights | 13°F |
Sublette County within WY
Sublette County ranks 1 of 23 WY counties for nights below 20°F. The fewest is Platte County, WY: 69 nights, winter lows near 16°F. At 7,525 ft, Sublette County sits 2,228 ft above the state's median county elevation of 5,297 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 Pinedale, WY, 13 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.