In December, Brentwood typically sees daytime highs of 13.3°C and overnight lows around 3.6°C. Compared to the annual average high of 22.6°C, December runs -9.3°C.
December in Brentwood averages a daytime high of 13.3°C and an overnight low of 3.6°C.
December runs -9.3°C compared to Brentwood's annual average high of 22.6°C, ranking #11 of 12 months by warmth.
Plan for daytime highs near 13.3°C and cooler evenings around 3.6°C.