I see my neighbour a lot. He told me about a cancer curing bush. I looked it up online and later told him what I had read and that I think it would grow here. Similar pattern, we talk about horses and plants. He will count the buds on his fruit trees, while I get excited over the beautiful colour of the peach flowers. There is always something new happening in one of our gardens, the moon, the prettiness of the bushland. He will get onto politics but I just smile and nod.
With the old lady neighbours, its a LOT of gossip. Like whos currently dying, moving, travelling, new cars or furniture. They gossip about whos in trouble with the cops, whos struggling with money, who got too pissed at the pub and had a cry, whos taking which meds for what ailments, car crashes on the highway and which wildflowers are out in the bush. Pets are often the topic of conversation as well, as they're always getting up to mischief or injury.
Weather and natural disasters are definitely a topic of convo, much like the "how are you/how was your day/howsit goin" Its just a starter to get on to other topics.