In December, Bartlett typically sees daytime highs of 11.2°C and overnight lows around 1.0°C. Compared to the annual average high of 22.0°C, December runs -10.8°C.
December in Bartlett averages a daytime high of 11.2°C and an overnight low of 1.0°C.
December runs -10.8°C compared to Bartlett's annual average high of 22.0°C, ranking #11 of 12 months by warmth.
Plan for daytime highs near 11.2°C and cooler evenings around 1.0°C.