In February, Nagaoka typically sees daytime highs of 5.3°C and overnight lows around -2.2°C. Compared to the annual average high of 17.7°C, February runs -12.4°C.
February in Nagaoka averages a daytime high of 5.3°C and an overnight low of -2.2°C.
February runs -12.4°C compared to Nagaoka's annual average high of 17.7°C, ranking #11 of 12 months by warmth.
Plan for daytime highs near 5.3°C and cooler evenings around -2.2°C.