In September, Kotlas typically sees daytime highs of 12.4°C and overnight lows around 4.2°C. Compared to the annual average high of 5.4°C, September runs +7.0°C.
September in Kotlas averages a daytime high of 12.4°C and an overnight low of 4.2°C.
September runs +7.0°C compared to Kotlas's annual average high of 5.4°C, ranking #5 of 12 months by warmth.
Plan for daytime highs near 12.4°C and cooler evenings around 4.2°C.