In May, Corvallis typically sees daytime highs of 18.9°C and overnight lows around 5.5°C. Compared to the annual average high of 16.5°C, May runs +2.3°C.
May in Corvallis averages a daytime high of 18.9°C and an overnight low of 5.5°C.
May runs +2.3°C compared to Corvallis's annual average high of 16.5°C, ranking #5 of 12 months by warmth.
Plan for daytime highs near 18.9°C and cooler evenings around 5.5°C.