In January, Brentwood typically sees daytime highs of 2.9°C and overnight lows around -5.0°C. Compared to the annual average high of 15.1°C, January runs -12.2°C.
January in Brentwood averages a daytime high of 2.9°C and an overnight low of -5.0°C.
January runs -12.2°C compared to Brentwood's annual average high of 15.1°C, ranking #12 of 12 months by warmth.
Plan for daytime highs near 2.9°C and cooler evenings around -5.0°C.