In December, Nashua typically sees daytime highs of 2.5°C and overnight lows around -7.5°C. Compared to the annual average high of 14.6°C, December runs -12.1°C.
December in Nashua averages a daytime high of 2.5°C and an overnight low of -7.5°C.
December runs -12.1°C compared to Nashua's annual average high of 14.6°C, ranking #10 of 12 months by warmth.
Plan for daytime highs near 2.5°C and cooler evenings around -7.5°C.