Don't despair! I learnt a good lesson from the wise old bloke (I can't recall his name - left soon after I arrived) behind the desk at the flying club.
The weather next day, when I had a lesson booked, was forecast nasty. I was saying something about the fact that I'd be staying on the ground again, but he pointed out that even the next day's weather forecasts are as good as tea leaves to a pilot. And he was right. Next day dawned bright and clear, and I got my flight!
A lot of people don't even book if the weather isn't looking good, which is a shame.