In October, Longmont typically sees daytime highs of 19.9°C and overnight lows around 2.2°C. Compared to the annual average high of 18.2°C, October runs +1.7°C.
October in Longmont averages a daytime high of 19.9°C and an overnight low of 2.2°C.
October runs +1.7°C compared to Longmont's annual average high of 18.2°C, ranking #6 of 12 months by warmth.
Plan for daytime highs near 19.9°C and cooler evenings around 2.2°C.