Robin a good alternative is a weather rock
I've got one in my garden which I use every day.
When is wet it's raining, when i can't see it its foggy, when its dry then its a good day and when its white it's snowing
Bit of a bugger to cart around with you and not very good for predicting the weather in advance, but its very accurate for telling you current conditions
Sorry could resist
.....................I use Met office and the standard App - I only found out this week that if you tap the standard App it will expand and give you the detail for the day (but I guess those Apple boys already knew this - unless its new with IOS 5)