Will Pipes Freeze in Roseau County, MN? 123 nights a Year
Freeze nights in Roseau County
In a normal year Roseau County, MN gets 123 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 98% of US counties.
Risk level: Severe. The risk season runs October to April, worst in January.
It depends where the pipe is
| Pipe | Freezes near | Nights a year |
|---|---|---|
| Outdoor spigot, open crawlspace | 32°F | 190 nights |
| Bare pipe in garage, attic or outside wall | 20°F | 123 nights |
| Insulated pipe in unheated space | 10°F | 86 nights |
| Inside the heated house | 0°F | 58 nights |
Foam-sleeving a bare pipe in unheated space takes it from 123 nights of risk to 86 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 09/24, last around 05/16. For 20°F: 10/27 to 04/21.
How cold Roseau County nights get
Average winter (Dec-Feb) low: -2°F; the coldest month, January, averages -6°F overnight. 9 months normally bring at least one night below 32°F (Jan, Feb, Mar, Apr, May, Sep, Oct, Nov, Dec). Nights below 10°F, cold enough to freeze insulated pipe in an unheated space, come in January, February, March, April, November, December: 86 nights a year, and 58 nights below zero.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|
| -6°F | -3°F | 12°F | 27°F | 41°F | 52°F | 55°F | 53°F | 44°F | 32°F | 18°F | 3°F |
Roseau County next to its neighbours
Kittson County, MN, 70 km west, gets 124 nights below 20°F to Roseau County's 123 nights. Marshall County, MN, 59 km southwest, gets 118 nights.
| County | Distance | Below 32°F | Below 20°F | Jan low |
|---|---|---|---|---|
| Roseau County, MN | - | 190 nights | 123 nights | -6°F |
| Marshall County, MN | 59 km southwest | 185 nights | 118 nights | -4°F |
| Lake of the Woods County, MN | 67 km east | 189 nights | 122 nights | -5°F |
| Kittson County, MN | 70 km west | 187 nights | 124 nights | -4°F |
| Pennington County, MN | 79 km south | 184 nights | 116 nights | -3°F |
| Red Lake County, MN | 102 km south | 182 nights | 117 nights | -3°F |
| Beltrami County, MN | 115 km southeast | 187 nights | 122 nights | -3°F |
Roseau County within MN
Roseau County ranks 6 of 87 MN counties for nights below 20°F. The most is St. Louis County, MN at 130 nights, with a 0°F average winter low. The fewest is Winona County, MN: 81 nights, winter lows near 12°F. At 1,107 ft, Roseau County sits close to the state's median county elevation of 1,114 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 Warroad, MN, 39 km away (fair 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.