Back on topic.... Nottingham will work down to 14C (no I ain't going to convert into American). It will be exceptionally clean at that temp and will still ferment relatively quick.
It will be a Wheat beer as said above not a weizen. If you can't find a liquid weizen yeast then next time try windsor or the new safale wheat yeast and ferment warmer, they will at least impart some weizen like flavors but still not the same.
Should be a tasty beer none the less.