In January, Cergy typically sees daytime highs of 5.6°C and overnight lows around -0.1°C. Compared to the annual average high of 14.6°C, January runs -9.0°C.
January in Cergy averages a daytime high of 5.6°C and an overnight low of -0.1°C.
January runs -9.0°C compared to Cergy's annual average high of 14.6°C, ranking #12 of 12 months by warmth.
Plan for daytime highs near 5.6°C and cooler evenings around -0.1°C.