In September, Fargo typically sees daytime highs of 21.4°C and overnight lows around 7.5°C. Compared to the annual average high of 11.2°C, September runs +10.2°C.
September in Fargo averages a daytime high of 21.4°C and an overnight low of 7.5°C.
September runs +10.2°C compared to Fargo's annual average high of 11.2°C, ranking #4 of 12 months by warmth.
Plan for daytime highs near 21.4°C and cooler evenings around 7.5°C.