In December, Leszno typically sees daytime highs of 2.7°C and overnight lows around -2.9°C. Compared to the annual average high of 12.8°C, December runs -10.2°C.
December in Leszno averages a daytime high of 2.7°C and an overnight low of -2.9°C.
December runs -10.2°C compared to Leszno's annual average high of 12.8°C, ranking #10 of 12 months by warmth.
Plan for daytime highs near 2.7°C and cooler evenings around -2.9°C.