Hail

Driving into work today it was hailing, but it was sunny at the same time.

If that were gentle rain we'd have a lovely rainbow, but what do you get with nasty hail and sun?

It's not as nice and friendly as rain, so it probably shows a symbol far less homophilic as a rainbow. Probably a swastika.

Oh, is that why they used to say, 'Hail Hitler'?

It can't just be a coincidence.