In December, Yonezawa typically sees daytime highs of 5.4°C and overnight lows around -2.2°C. Compared to the annual average high of 15.4°C, December runs -10.0°C.
December in Yonezawa averages a daytime high of 5.4°C and an overnight low of -2.2°C.
December runs -10.0°C compared to Yonezawa's annual average high of 15.4°C, ranking #10 of 12 months by warmth.
Plan for daytime highs near 5.4°C and cooler evenings around -2.2°C.