In December, Saint-Quentin-en-Yvelines typically sees daytime highs of 6.5°C and overnight lows around 1.4°C. Compared to the annual average high of 14.7°C, December runs -8.1°C.
December in Saint-Quentin-en-Yvelines averages a daytime high of 6.5°C and an overnight low of 1.4°C.
December runs -8.1°C compared to Saint-Quentin-en-Yvelines's annual average high of 14.7°C, ranking #11 of 12 months by warmth.
Plan for daytime highs near 6.5°C and cooler evenings around 1.4°C.