No dashboard lights this morning.

This morning, I had no dashboard lights. I turned the headlights on and off, and they worked fine.
The speedo was off and so was the "headlight on" light, as well as the high beam light and,
for some reason, my mpg info on the navigation screen.
It was raining, but I don't think any water got into anywhere it shouldn't have.
This afternoon, when I left work, everything was fine.
Any ideas ?
Thanks.
Dom