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Does Cold Temperature Affect the Level Gauge on a Propane Tank?
Propane is like nearly all other kinds of materials in that it is affected by cold temperatures. The propane gas contracts as the temperature does down. That reduced level of gas in the tank is reflected by the gauge which reflects the level on the propane tank. Usually, this occurs whenever a homeowner checks the gauge in cold weather and sees the amount of the tank level before and after delivery. Depending on the climate, the tank level may not go up as much as anticipated.

Propane Tank Level Gauge
The gauge on a propane tank shows you what fraction of the tank is full. Typically, tanks are not filled over 80% so as to allow the gas to expand on warm temperatures. Like for instance, a 500 gallon tank, at a reading of 80% at normal temperatures reflects about 400 gallons of propane in the tank. This is roughly the amount which can be stored.

Normal Temperatures
The propane industry manages the popular web site Propane 101, which considers the propane reference point to be an exterior temperature of 60 degrees. For instance, if the gauge reads 50% of capacity on a day when the temperature is near 60 degrees, then a 500 gallon tank will have about 250 gallons of propane. If the temperature that same day is a lot lower than 60 degrees, the gauge would read lower. Also, if the temperature is a lot higher than 60 degrees, the gauge will actually read higher because the gas expanded.

Effect of Expansion and Contraction
The energy contained or amount of energy contained inside a tank will not change as the gas either expands or contracts, based on the propane industry web site. The amount of propane itself has not changed, but only the density of the gas has changed.

Cold-Weather Delivery
The homeowner who orders 100 gallons of propane would be given roughly 424 pounds of propane. With the delivery of 100 gallons, the homeowner with a 1000 gallon propane tank can expect the guage to go up by 10%. These numbers would be accurate if the temperatures were close to 60 degrees at the time of delivery. If the delivery took place during colder weather conditions, these chillier temperatures would cause a smaller increase reading on the propane gauge.

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