This post is the tenth in a set for the 12 calendar months that began with March. Graphs are sixteen-year logs of the monthly mean anomaly values of nine climate variables for Manilla, NSW, with fitted trend lines. I have explained the method in notes at the foot of the page.
Raw anomaly values for December
Extreme values of December anomalies were as follows:
Daily Maximum Temperature Anomalies (2) -3.6 deg:
December 2010; -4.7 deg: December 2011;
Rainfall Anomalies (1) +80 mm: December 2004;
Minus (Temperature Range Anomaly) (1) +3.7 deg: December
2010;
Dew Point Anomalies (1) -4.4 deg: December 2013.
Trend lines for December
Heat Indicators
All heat indicator quartic trends began low and ended high, and had a peak in 2003 or 2004 and a trough in 2010. The range from peak to trough was greatest for maximum anomalies and least for minimum and subsoil anomalies.









