Dew point is the tempurature the air cannot hold the weight of the water in it. The water then begins to condense and form droplets. This tempurature is always below or equal to the air tempurature.
Propane prices. Maine (ME) propane users spent an average of $2.724 per gallon over the 2012-2013 heating season. This is slightly higher than the 2.436 average for the country as a whole, for the reasons explained above (distance from major supply source, colder climate, higher demand).
The price of propane is skyrocketing. At the beginning of last week, 200 gallons cost $459. At 9 a.m. Friday, the price was $799. By 10 a.m., it was $1,027, said Robert Owen, director of the Jefferson Franklin Community Action Coalition in Hillsboro, which provides heating aid for the poor.