Quick Answer:

If an outdoor spigot runs on warm afternoons but not on cold mornings, the most likely causes are partial freezing inside the spigot or a failing internal part that only moves when warm. Test it at different temperatures, avoid aggressive fixes, and follow safe steps to diagnose. If you see leaks, bulging pipes, or can’t find the shutoff, call a professional.

Why This Happens

When temperatures drop, water inside the spigot or the short section of pipe leading to it can freeze or form ice that blocks flow. On warm days the ice melts and the spigot works again. Other common reasons include a worn valve seat or damaged packing that only lets water through once thermal expansion changes clearances.

Operate the spigot during a cold morning and again during a warm afternoon, then compare the flow. That simple test confirms whether the problem is temperature-dependent rather than a steady supply issue from the main line.

If the handle spins without opening or feels loose, the internal parts may be degraded. That symptom paired with temperature-dependent flow points to either ice blockage or a failing valve assembly.

Step-by-Step What to Do

Step 1 — Confirm the pattern

• Operate the spigot during a cold morning and again during a warm afternoon, and note the difference in flow and handle feel.
• Check other outdoor spigots and nearby indoor faucets to see if the issue is isolated to one outlet.

Step 2 — Look for visible ice or damage

• Inspect the spigot, the stub of pipe, and the wall area for frost, ice buildup, or signs of leaking.
• Gently feel the pipe (without applying heat) to see if it’s icy or unusually cold compared to other pipes.

Step 3 — Check the shutoff and vacuum breaker

• Locate the indoor shutoff valve that serves the outdoor spigot and confirm it is fully open. Some homes have a dedicated shutoff inside the house for winterizing.
• Inspect the vacuum breaker or hose bib backflow device for damage or ice.

Step 4 — Thawing a frozen spigot safely (if needed)

• If you suspect a small external ice obstruction, warm the area with a hair dryer from a safe distance or wrap a warm, damp towel around the spigot. Keep electrical devices dry and follow their safety instructions.
• A slow, even warm is safer than applying direct flame or intense heat. If thawing doesn’t restore normal flow or you find leaks after thawing, stop and get professional help.

Step 5 — Record and isolate

• Note when the spigot works and when it doesn’t, and whether any actions (thawing, opening the indoor shutoff) change that behavior.
• Disconnect hoses so you can detect tiny leaks or drips as soon as flow returns.

What Not to Do

• Do not ignore cold-weather failures. Waiting can let a minor freeze become a burst pipe.
• Do not use an open flame, a torch, or high heat directly on the spigot or siding.
• Do not force a frozen valve or use sharp tools to chip away ice — that can damage the spigot and the pipe.
• Do not assume interior plumbing can be repaired without turning off water first if you see signs of leaking after thawing.

When to Call a Professional

Call a professional if you see leaks after thawing, a bulging or split pipe, no improvement after safe thawing steps, or if you can’t find or operate the shutoff. Also seek help when the spigot is inside a wall cavity or under a foundation where DIY work could cause further damage. If in doubt, it’s reasonable to call a plumber rather than risk a burst pipe or water damage.

If the handle is loose or spins without opening and you can’t identify a freeze point, a plumber can inspect and replace the stem or packing properly.

Safety Notes

• Frozen pipes can burst as they thaw. If you notice sudden wetness, turn off the water at the main and call for help.
• Keep electrical heaters and hair dryers away from water and wet surfaces to avoid shock. Follow all appliance safety directions.
• Avoid open flames and torches near siding, trim, or any combustible materials.

Common Homeowner Questions

• My spigot works when warm but drips when it thaws — what now? — That suggests a seal or packing failure; stop using it and get it repaired to prevent a larger leak.
• Can I run water a little to prevent freezing? — A slow trickle can help, but if the spigot is inside a wall or the pipe is already frozen, running water may not solve the underlying issue.
• Will insulation fix this permanently? — Insulation and proper winterizing reduce freeze risk, but a damaged valve or internal ice-prone layout may still need repair.