In July, Duluth typically sees daytime highs of 24.9°C and overnight lows around 11.8°C. Compared to the annual average high of 9.3°C, July runs +15.6°C.
July in Duluth averages a daytime high of 24.9°C and an overnight low of 11.8°C.
July runs +15.6°C compared to Duluth's annual average high of 9.3°C, ranking #1 of 12 months by warmth.
Plan for daytime highs near 24.9°C and cooler evenings around 11.8°C.