Funnily enough about three weeks ago there was an article in the paper here about the validity of the readings from Penrith AWS. Some local wrote to the paper and suggested that his thermometer was more accurate because the AWS was near water and and was therefore moderated by its influence. He suggested that the AWS was under estimating the daily temps by at least 2 degrees! Apparently the BoM wouldn't comment when contacted by the Penrith Press!
What can you say?...