act on climate 

Maximum Temperatures declined over the first half of the 1900s from around 22.3 down to 21.6, but have risen since to 23.0, the fastest in the last 20 years.

Minimum Temperatures were fairly flat around 11.5 degrees until the late 1950s and have since risen to around 12.7 degrees, up around 1.2 degrees in all.

Diurnal Ranges fell from 11 to 9.7 degrees between 1910 and 1970 and have since risen to around 10.4.

Rainfall 9-year averages have ranged from around 570 to 700 mm in a fairly stable pattern throughout the time period.