in the mean time, google degree days and put in your nearest area.
get the spreadsheet for the last 3-4 months and get copies of your gas bills.
I find that using 65 degrees, and a gas boiler, in NYC, that gas uses is close to 75% of the total of degree days.
100 degree days = 75 gallons of oil
the use is on a curve, so it is not linear, but I am usually near 10% of true. the colder it gets the lower the percentage.
since I just use it to figure fills and schedule when it calculates to half, I am good.
if you want this remote, then all the extra fun of internet comes into play.