@snowleopard: Thanks. That was one weird day: during that tiny snow "storm", I guess it was about 3-5 °C (37.4-41°F). After a while, it was even too cold for the elephants; they left the bassin and walked straight to the indoor stables.
Half an hour later, the snow turned into rain, then the sun came out, then it snowed again...Like I said: weird day.