In May, Ishim typically sees daytime highs of 17.7°C and overnight lows around 4.4°C. Compared to the annual average high of 5.7°C, May runs +12.0°C.
May in Ishim averages a daytime high of 17.7°C and an overnight low of 4.4°C.
May runs +12.0°C compared to Ishim's annual average high of 5.7°C, ranking #4 of 12 months by warmth.
Plan for daytime highs near 17.7°C and cooler evenings around 4.4°C.