Hard to project an average, really. Our weather this time of year is all over the map. Today started out around 55F, and right now, it's pretty close to 40F. It got colder when the clouds dissipated, like it normally does. Two days from now, it may drop to freezing and stay there, or, it might warm back up to 75F and get stormy. The storms that hit Kentucky the other day were at the northern end of the same front that hit us. We got thunder/lightning, and a buttload of rain, but only a few sticks knocked down by wind. Temperature the day before was nearly 80F, which is when we know we're gonna get some bad weather. Warm air comes up from the Gulf coast, and cool air from Canada comes in off the jet stream. The warm moist air from the Gulf of Mexico rises through the cold air, and makes twisters and lots of nasty weather. Your winter is a little milder than here. Ours is slightly cooler than South Australia's winter, probably 10 degrees C or so cooler than yours, but is too erratic to try to ferment outside.