In December, Blackburn typically sees daytime highs of 5.8°C and overnight lows around 1.3°C. Compared to the annual average high of 11.4°C, December runs -5.6°C.
December in Blackburn averages a daytime high of 5.8°C and an overnight low of 1.3°C.
December runs -5.6°C compared to Blackburn's annual average high of 11.4°C, ranking #10 of 12 months by warmth.
Plan for daytime highs near 5.8°C and cooler evenings around 1.3°C.