Will Pipes Freeze in Williamsburg city, VA? 9 nights a Year
Freeze nights in Williamsburg city
In a normal year Williamsburg city, VA gets 9 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 25% of US counties.
Risk level: Occasional. The risk season runs December to March, worst in January.
It depends where the pipe is
| Pipe | Freezes near | Nights a year |
|---|---|---|
| Outdoor spigot, open crawlspace | 32°F | 68 nights |
| Bare pipe in garage, attic or outside wall | 20°F | 9 nights |
| Insulated pipe in unheated space | 10°F | under 1 night |
| Inside the heated house | 0°F | under 1 night |
Foam-sleeving a bare pipe in unheated space takes it from 9 nights of risk to under 1 night. 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 11/10, last around 03/31. For 20°F: 12/29 to 02/19.
How cold Williamsburg city nights get
Average winter (Dec-Feb) low: 32°F; the coldest month, January, averages 31°F overnight. 6 months normally bring at least one night below 32°F (Jan, Feb, Mar, Apr, Nov, Dec). Nights below 10°F, cold enough to freeze insulated pipe in an unheated space, come in January: under 1 night a year, and under 1 night below zero.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 31°F | 32°F | 38°F | 48°F | 57°F | 65°F | 70°F | 69°F | 63°F | 51°F | 41°F | 34°F |
Williamsburg city next to its neighbours
Gloucester County, VA, 22 km northeast, gets 11 nights below 20°F to Williamsburg city's 9 nights. Newport News city, VA, 27 km southeast, gets 7 nights.
| County | Distance | Below 32°F | Below 20°F | Jan low |
|---|---|---|---|---|
| Williamsburg city, VA | - | 68 nights | 9 nights | 31°F |
| James City County, VA | 9 km northwest | 69 nights | 10 nights | 31°F |
| Gloucester County, VA | 22 km northeast | 75 nights | 11 nights | 30°F |
| Surry County, VA | 23 km southwest | 80 nights | 13 nights | 29°F |
| Newport News city, VA | 27 km southeast | 60 nights | 7 nights | 31°F |
| York County, VA | 28 km east | 62 nights | 8 nights | 31°F |
| Charles City County, VA | 32 km west | 72 nights | 12 nights | 30°F |
Williamsburg city within VA
Williamsburg city ranks 122 of 133 VA counties for nights below 20°F. The most is Highland County, VA at 62 nights, with a 20°F average winter low. The fewest is Norfolk city, VA: 4 nights, winter lows near 35°F. At 91 ft, Williamsburg city sits 357 ft below the state's median county elevation of 448 ft.
What to do here
- Keep a night-of routine: drip, open cabinets, keep the heat at 55F or above.
- Foam-sleeve any pipe in the garage or crawlspace once; it is cheap and lasts years.
Few hard nights means pipes are rarely built for them; see freezes in warm places.
Where this comes from
NOAA 1991-2020 climate normals, blended from 3 nearby stations and adjusted for elevation; closest is Williamsburg (2 mi N), VA, 4 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.