Will Pipes Freeze in Piatt County, IL? 47 nights a Year
Freeze nights in Piatt County
In a normal year Piatt County, IL gets 47 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 62% 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 | 123 nights |
| Bare pipe in garage, attic or outside wall | 20°F | 47 nights |
| Insulated pipe in unheated space | 10°F | 20 nights |
| Inside the heated house | 0°F | 6 nights |
Foam-sleeving a bare pipe in unheated space takes it from 47 nights of risk to 20 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 10/13, last around 04/23. For 20°F: 11/16 to 03/19.
How cold Piatt County nights get
Average winter (Dec-Feb) low: 21°F; the coldest month, January, averages 18°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: 20 nights a year, and 6 nights below zero.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 18°F | 22°F | 31°F | 41°F | 52°F | 61°F | 64°F | 61°F | 54°F | 42°F | 32°F | 24°F |
Piatt County next to its neighbours
De Witt County, IL, 33 km northwest, gets 51 nights below 20°F to Piatt County's 47 nights. Macon County, IL, 36 km southwest, gets 41 nights.
| County | Distance | Below 32°F | Below 20°F | Jan low |
|---|---|---|---|---|
| Piatt County, IL | - | 123 nights | 47 nights | 18°F |
| De Witt County, IL | 33 km northwest | 123 nights | 51 nights | 18°F |
| Macon County, IL | 36 km southwest | 111 nights | 41 nights | 20°F |
| Champaign County, IL | 37 km northeast | 121 nights | 45 nights | 18°F |
| Moultrie County, IL | 41 km south | 119 nights | 46 nights | 19°F |
| Douglas County, IL | 42 km southeast | 117 nights | 43 nights | 18°F |
| McLean County, IL | 58 km north | 132 nights | 57 nights | 16°F |
Piatt County within IL
Piatt County ranks 46 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 677 ft, Piatt County sits close to 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 Champaign (9 mi SW), IL, 19 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.