I also use mine daily, when it was new it was getting 60+mpg.
Now its colder, its definitely dropped, averaging 57mpg. Chain slack, oil getting used so thicker hence causing more friction, every little bit adds up. But the main thing is the cold. Even notice poorer mpg in the car (although more power as cooler air feeding the intercooler).
I've also found that using low engine revs, or revs over 6k uses more fuel. Headwinds also won't help.
So basically, hold the revs, smooth on the throttle, and it might go up a bit.