次の文もEMOTIONAL FIRST AIDからの引用です。
"No, I'm saying the opposite. I'm saying it's not as bleak as it seems and that you can do something about it. Let them get to know you. Chat a little, exchange pleasantries, kvetch about the weather, or ask about their weekend. Make the effort for a couple of weeks and I assure you they will be far more open to hanging out, even Stanley."
"kvetch" は文脈からすると単に話題にして話す意味でも通じますが、どんな意味なのか辞書を見ます。
・Oxford English Dictionary: Complain: Thus every day, on my blog, these strangers show up, just to shoot the breeze, flirt, kvetch, veer off topic and, most of all, pay zero attention to what I have written.
・Collins Dictionary: If someone kvetches about something, they complain about it in a bad-tempered way.: ・Denverites often kvetch about sleep disrupted by the Denver Police Department's helicopter orbiting overhead.
なるほど、天気の場合は暑いとか寒いとか天気について苦情を言うのですね。