In May, Lanzhou typically sees daytime highs of 21.8°C and overnight lows around 8.0°C. Compared to the annual average high of 14.9°C, May runs +6.9°C.
May in Lanzhou averages a daytime high of 21.8°C and an overnight low of 8.0°C.
May runs +6.9°C compared to Lanzhou's annual average high of 14.9°C, ranking #4 of 12 months by warmth.
Plan for daytime highs near 21.8°C and cooler evenings around 8.0°C.