In December, Siemianowice Slaskie typically sees daytime highs of 2.1°C and overnight lows around -3.8°C. Compared to the annual average high of 12.3°C, December runs -10.2°C.
December in Siemianowice Slaskie averages a daytime high of 2.1°C and an overnight low of -3.8°C.
December runs -10.2°C compared to Siemianowice Slaskie's annual average high of 12.3°C, ranking #11 of 12 months by warmth.
Plan for daytime highs near 2.1°C and cooler evenings around -3.8°C.