In December, Monterey Park typically sees daytime highs of 18.2°C and overnight lows around 5.8°C. Compared to the annual average high of 23.8°C, December runs -5.6°C.
December in Monterey Park averages a daytime high of 18.2°C and an overnight low of 5.8°C.
December runs -5.6°C compared to Monterey Park's annual average high of 23.8°C, ranking #11 of 12 months by warmth.
Plan for daytime highs near 18.2°C and cooler evenings around 5.8°C.