In September, Sollentuna typically sees daytime highs of 15.6°C and overnight lows around 6.6°C. Compared to the annual average high of 9.8°C, September runs +5.8°C.
September in Sollentuna averages a daytime high of 15.6°C and an overnight low of 6.6°C.
September runs +5.8°C compared to Sollentuna's annual average high of 9.8°C, ranking #4 of 12 months by warmth.
Plan for daytime highs near 15.6°C and cooler evenings around 6.6°C.