Will Pipes Freeze in Crawford County, IL? 40 nights a Year
Freeze nights in Crawford County
In a normal year Crawford County, IL gets 40 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 56% 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 | 113 nights |
| Bare pipe in garage, attic or outside wall | 20°F | 40 nights |
| Insulated pipe in unheated space | 10°F | 15 nights |
| Inside the heated house | 0°F | 4 nights |
Foam-sleeving a bare pipe in unheated space takes it from 40 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 10/22, last around 04/13. For 20°F: 11/24 to 03/13.
How cold Crawford County nights get
Average winter (Dec-Feb) low: 23°F; the coldest month, January, averages 20°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: 15 nights a year, and 4 nights below zero.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 20°F | 23°F | 33°F | 43°F | 54°F | 63°F | 66°F | 63°F | 56°F | 44°F | 34°F | 25°F |
Crawford County next to its neighbours
Sullivan County, IN, 31 km east, gets 36 nights.
| County | Distance | Below 32°F | Below 20°F | Jan low |
|---|---|---|---|---|
| Crawford County, IL | - | 113 nights | 40 nights | 20°F |
| Sullivan County, IN | 31 km east | 105 nights | 36 nights | 22°F |
| Lawrence County, IL | 32 km south | 98 nights | 31 nights | 21°F |
| Jasper County, IL | 34 km west | 106 nights | 36 nights | 22°F |
| Clark County, IL | 37 km north | 111 nights | 36 nights | 19°F |
| Richland County, IL | 43 km southwest | 105 nights | 36 nights | 21°F |
| Knox County, IN | 46 km southeast | 105 nights | 34 nights | 22°F |
Crawford County within IL
Crawford County ranks 62 of 102 IL counties for nights below 20°F. The most is Jo Daviess County, IL at 76 nights, with a 14°F average winter low. The fewest is Alexander County, IL: 21 nights, winter lows near 29°F. At 538 ft, Crawford County sits 93 ft below the state's median county elevation of 632 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 Robinson, IL, 2 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.