Not the weather, although let's hope it does improve. Many years ago, CAMRA designated May to be Mild Month - why May I'm not sure, because I'd have thought March would be better (link
here, and
in right hand column) - but for better or worse, May it is.
Mild is a threatened beer style, having in the past been associated quite inaccurately with cloth caps and whippets, although there's nothing wrong with whippets, they're lovely dogs. It's usually dark, it shouldn't have an overpowering flavour, but that doesn't mean it should be bland and insipid, and it shouldn't normally be strong.
The Willow Grove, our local Wetherspoons Lloyds No. 1, has contacted our CAMRA branch about putting on two or three milds throughout the month in addition to the Cains Mild they have on all the time. This is a welcome idea because milds are a pleasant drink, and quite suitable when you have to go back to work after lunch, or if you have to drive. If I'm driving, I'd much rather have a pint of decent mild than two pints of shandy. In the case of Tetley's, I've always preferred drinking their mild to their bitter, even though I'm normally a bitter drinker.
You may well come across pubs putting milds on to celebrate May and mild month - give them a try. I can't guarantee you'll like them all, but I'd be surprised if you don't find something to your taste.