Lake Forest's winters are mild, with temperatures ranging from just above freezing to the mid-20s Celsius, averaging around 14°C in January and December. As spring arrives, temperatures gradually warm up, reaching average highs of around 17°C by April and May. Summer months see a slight cooling trend, with July and August averaging around 25°C. Autumn brings another cooldown, with temperatures dipping back into the mid-teens by October and November. The coldest winter months are often followed by relatively cool autumns, while the warmest spring months precede mild summers.