Does Cold Temperature Affect the Level Gauge on a Propane Tank?
Propane is like the majority of other kinds 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. Normally, this comes into play whenever a homeowner checks the gauge during cold weather and sees the amount of the tank level before and after delivery. Depending upon the weather, the level on the tank may not rise as much as anticipated.

Propane Tank Level Gauge
The propane tank's gauge shows you what portion of the tank is full. Typically, tanks are not filled more than 80% in order to enable the gas to expand during hot days. Like for example, a 500 gallon tank, at a reading of 80% at normal temperatures reflects roughly 400 gallons of propane inside the tank. This is roughly the amount which can be stored.

Normal Temperatures
The web site 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 percent 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 much 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 given by the propane industry website, the amount of energy contained in the tank does not really change when the gas contracts or expands. The amount of propane itself has not changed, but just the density of the gas has changed.

Cold-Weather Delivery
If a homeowner orders 100 gallons of propane to be delivered, they will be given 424 lbs. of propane. If the homeowner has a 1000 gallon propane tank, they can expect the gauge to go up by 10% with the delivery of 100 gallons. These numbers would be correct if the temperatures were near 60 degrees at the time of delivery. If the delivery took place during colder weather, these chillier temperatures will result in a smaller increase reading on the propane gauge.