Modules & VBA :: Display Last Record Next To Empty Space On Current Record

I'm trying to make a form that shows what the last record was next to the empty space where you enter a new record.

This is so the user knows that what they are entering is roughly in line with what has come before.

So for example if I was recording temperature every May, I would like a form that has a field called temperature and next to that field I would like to see last year's temperature.

Records:

Date | Temp
2014 | 20.5
2013 | 18.5
2012 | 19.0
2011 | 22.7
2010 | 15.2

So when I enter the record for 2015 I have a box that says: Temp and next to that box is "Last year was 20.5" or something like that.