Yes, sir. The high frequency, which is the long-range radio type that people use in ham radios and up, is strongly affected by atmospheric conditions. It's a physical thing, because a lot of the signals bounce off the atmosphere, and the layers at which they bounce change with things like solar flares. Everybody, not just us, is affected by that, which is why sometimes you can pick up a skipped signal, from AM radio in particular, from central United States as you're driving to Toronto, and other times you can barely pick up Kingston as you drive by it. The same principle applies to us, except we're talking about longer distances.
On February 18th, 2015. See this statement in context.