Rainfall is fairly uniform through the year, tending to peak between April and October with lower rainfall during the months of January and February. The mean annual rainfall is between 1000 and 1500 mm, increasing with elevation and from west to east. The elevation means that temperatures are typically 2 to 5 °C cooler than the lower suburbs of Melbourne to the west [http://www.bom.gov.au/climate/averages/tables/cw_086071.shtml], with temperatures typically lowering by 1 °C for every 150 m of elevation. Due to the elevation, fog is common in winter months.