In July, Heidelberg typically sees daytime highs of 17.9°C and overnight lows around -0.2°C. Compared to the annual average high of 23.2°C, July runs -5.3°C.
July in Heidelberg averages a daytime high of 17.9°C and an overnight low of -0.2°C.
July runs -5.3°C compared to Heidelberg's annual average high of 23.2°C, ranking #11 of 12 months by warmth.
Plan for daytime highs near 17.9°C and cooler evenings around -0.2°C.