In October, Guidonia Montecelio typically sees daytime highs of 21.6°C and overnight lows around 10.7°C. Compared to the annual average high of 20.9°C, October runs +0.8°C.
October in Guidonia Montecelio averages a daytime high of 21.6°C and an overnight low of 10.7°C.
October runs +0.8°C compared to Guidonia Montecelio's annual average high of 20.9°C, ranking #6 of 12 months by warmth.
Plan for daytime highs near 21.6°C and cooler evenings around 10.7°C.