As a second thought I am not aware of any legal cases on this side of the water with professional meteorologists involved. Perhaps how much less for we enthusiasts?
However, Edouard, as usual, raises an interesting point about keeping a low profile, which perhaps raises the question as to why you record the weather, study the weather, put the weather on the web etc. If you are doing it for the public good, i.e. to share with others, then you really need to raise your game on a number of fronts, because , by implication, you are inviting them to use it, and in extending an invite you must have faith in your data to be useable to some folk, thus the disclaimer becomes almost irrelevant as you are expecting people to look at it (because they have an interest in the weather in that area). If you are expecting them to look at your data and not use it for anything then it seems a bit far fetched. If you invite them to look at it then it must be available in an accurate form (why post inaccurate data? Have you done it to meet a local need? If so , what is that need and are you really meeting it? Is inaccurate information useful or better than nothing? Why then do you put your data on the Net? If it is to share then see above, if it is for your own use, say whilst you are away from home , then it should be private for you only. I do it for me. So I can view the weather when I am away or need to check the weather for my daughter's work. I share with others, like this forum, who understand the limitations, or the likes of Wunderground and CWOP who also understand (this latter reason is currently under review). At the same time I also have links to the Met Office and other sites, so comparative data is immediately available.
Its a very bigh question here, and one that I think will roll on for a little while yet. I will watch the answers with great interest.
Best wishes
Mike