In December, Modesto typically sees daytime highs of 12.4°C and overnight lows around 2.5°C. Compared to the annual average high of 23.6°C, December runs -11.2°C.
December in Modesto averages a daytime high of 12.4°C and an overnight low of 2.5°C.
December runs -11.2°C compared to Modesto's annual average high of 23.6°C, ranking #11 of 12 months by warmth.
Plan for daytime highs near 12.4°C and cooler evenings around 2.5°C.