Poor visibility

I really only use Sky for the coverage of the F1 GPs, and if there is any rain, even light rain, or the sky is overcast, then I get no signal. Fortunately I can use the Sky app on my iPad, but it is 'clever' enough to stop me activating the cable to give me a picture on the bigger screen, so I'm limited to the iPad screen. I really should cancel the Sky contract, but I keep putting it off.