Does Cold Temperature Affect a Propane Tank Level Gauge?
Propane is similar to the majority of other types of materials in that it is affected by cold temperatures. The propane gas contracts when the temperature does down. That reduced level of gas in the tank is reflected by the gauge which reflects the tank level. Usually, this occurs whenever a homeowner checks the gauge during cold conditions and sees the amount of the tank level before and after delivery. Depending upon the weather conditions, the level on the tank may not rise as much as expected.

Propane Tank Level Gauge
The gauge on the propane tank would show what portion of the gas tank is still full. Tanks are normally not filled over 80% full because this will allow for the gas to expand during warmer days. Like for example, a 500 gallon tank, at a reading of 80 percent at normal temperatures reflects approximately 400 gallons of propane in the tank. This is about how much could be stored.

Normal Temperatures
The website Propane 101, which is operated by the propane industry, considers an exterior temperature of 60 degrees to be the baseline or reference point. For example, if the gauge reads 50% of capacity on a day when the temperature is near 60 degrees, then a 500 gallon tank would have approximately 250 gallons of propane. If the temperature that same day is a lot lower than 60 degrees, the gauge will read lower. Similarly, if the temperature is a lot higher than 60 degrees, the gauge will actually read higher due to the expansion of the gas.

Effect of Contraction and Expansion
According to the information provided by the propane industry website, the amount of energy contained in the tank does not actually change when the gas contracts or expands. 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 will be given approximately 424 pounds of propane. With the delivery of 100 gallons, the homeowner with a 1000 gallon propane tank could expect the guage to go up by 10%. These numbers will be correct if the temperatures were near 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.