I hate it when it gets cold like this, because the cars get so yucky with all the ice and salt and such. And yes, trying to clean the windshield when it's like that is no fun - if the fluid even comes out! Mine is usually frozen inside the car.
I've done that before too. It's such a drag. My windshield wipers are still messed up because of it. I haven't gotten around to changing them yet.