In reply to smithaldo: they have changed the wording to say rarely will the summits exceed freezing point, i.e. be higher than freezing!
so it will likely be very cold but very windy and very snowy too, so on balance for next weekend I could have made the right decision, but for those on the following week it could be great fun!
Anyway that's the beauty of winter climbing and the wait for conditions. Sometimes your lucky, sometimes your not!