In December, Sankt Gallen typically sees daytime highs of 1.5°C and overnight lows around -3.0°C. Compared to the annual average high of 10.8°C, December runs -9.3°C.
December in Sankt Gallen averages a daytime high of 1.5°C and an overnight low of -3.0°C.
December runs -9.3°C compared to Sankt Gallen's annual average high of 10.8°C, ranking #11 of 12 months by warmth.
Plan for daytime highs near 1.5°C and cooler evenings around -3.0°C.