About Jona, Saint Gallen's Climate & Weather History

Jona is a city of approximately 17,700 people in Saint Gallen, Switzerland. Located in the Europe/Zurich time zone at 47.2°N latitude.

In 2025, Jona recorded an average annual temperature of 51°F. The hottest temperatures reached 91°F in August; the coolest were 18°F in January. Total precipitation for the year was 56 inches, with the wettest month being July. Snowfall for the year totaled approximately 8 inches.