With a population of around 18,400, Olten sits in Solothurn, Switzerland. The city operates in the Europe/Zurich time zone.
Recent weather here gives a sense of typical conditions: in 2025, Olten recorded a mean annual temperature of 51°F, ranging from 20°F lows in November to 94°F highs in August, with about 50 inches of precipitation across the year.
View historical weather for Olten · More cities in Solothurn