In May, Terni typically sees daytime highs of 21.5°C and overnight lows around 9.3°C. Compared to the annual average high of 18.4°C, May runs +3.1°C.
May in Terni averages a daytime high of 21.5°C and an overnight low of 9.3°C.
May runs +3.1°C compared to Terni's annual average high of 18.4°C, ranking #5 of 12 months by warmth.
Plan for daytime highs near 21.5°C and cooler evenings around 9.3°C.