Will Pipes Freeze in Pinal County, AZ? under 1 night a Year
Freeze nights in Pinal County
In a normal year Pinal County, AZ gets under 1 night at or below 20°F, the point where bare pipes in a garage, attic or outside wall start to freeze. That is more than 3% of US counties.
Risk level: Rare.
It depends where the pipe is
| Pipe | Freezes near | Nights a year |
|---|---|---|
| Outdoor spigot, open crawlspace | 32°F | 22 nights |
| Bare pipe in garage, attic or outside wall | 20°F | under 1 night |
| Insulated pipe in unheated space | 10°F | none |
| Inside the heated house | 0°F | none |
Month by month
Nights at or below 20°F in a normal year.
First 32°F night is usually around 12/12, last around 01/30.
How cold Pinal County nights get
Average winter (Dec-Feb) low: 39°F; the coldest month, December, averages 38°F overnight. 5 months normally bring at least one night below 32°F (Jan, Feb, Mar, Nov, Dec).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 39°F | 41°F | 46°F | 51°F | 59°F | 68°F | 77°F | 76°F | 70°F | 57°F | 45°F | 38°F |
Pinal County next to its neighbours
Pima County, AZ, 96 km southwest, gets 2 nights below 20°F to Pinal County's under 1 night.
| County | Distance | Below 32°F | Below 20°F | Jan low |
|---|---|---|---|---|
| Pinal County, AZ | - | 22 nights | under 1 night | 39°F |
| Pima County, AZ | 96 km southwest | 36 nights | 2 nights | 36°F |
| Gila County, AZ | 110 km northeast | 24 nights | under 1 night | 36°F |
| Maricopa County, AZ | 116 km northwest | 6 nights | none | 43°F |
| Graham County, AZ | 139 km east | 75 nights | 9 nights | 29°F |
| Santa Cruz County, AZ | 162 km south | 48 nights | 3 nights | 34°F |
| Cochise County, AZ | 192 km southeast | 73 nights | 7 nights | 30°F |
Pinal County within AZ
Pinal County ranks 13 of 15 AZ counties for nights below 20°F. The most is Coconino County, AZ at 67 nights, with a 20°F average winter low. The fewest is Maricopa County, AZ: none, winter lows near 43°F. At 1,702 ft, Pinal County sits 2,370 ft below the state's median county elevation of 4,072 ft.
What to do here
- Watch the forecast for a sub-threshold night.
- That night: drip the faucet on an outside wall, open the sink cabinet.
A few nights a year catches houses that were never built for it: pipes in places that rarely freeze.
Where this comes from
NOAA 1991-2020 climate normals, blended from 3 nearby stations and adjusted for elevation; closest is Florence, AZ, 13 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.