Looking up, again

I have spent an inordinate amount of time indoors today, on what is a spectacularly beautiful autumn day. I have mostly been busy making and icing hedgehog cupcakes for a certain little girl's birthday party tomorrow (Little G's little sister - Littler G? - turns 2 next Tuesday) and cooking dinner for the family. However, I popped outside for some fresh air and sunshine just now and decided to practise my new hobby of looking up...
...and look what I saw in the clouds above our house! The most beautiful upside down mini-rainbow! This was taken just with my usual camera, on zoom, stood outside my backdoor looking straight up. I'm quite pleased with it! :)

(Though I'll confess to being a little confused - we've had no rain today, so how can there be a rainbow? Or is this not actually a rainbow??)