In December, Lomza typically sees daytime highs of 0.4°C and overnight lows around -4.2°C. Compared to the annual average high of 11.2°C, December runs -10.8°C.
December in Lomza averages a daytime high of 0.4°C and an overnight low of -4.2°C.
December runs -10.8°C compared to Lomza's annual average high of 11.2°C, ranking #10 of 12 months by warmth.
Plan for daytime highs near 0.4°C and cooler evenings around -4.2°C.