In September, Slonim typically sees daytime highs of 17.3°C and overnight lows around 7.6°C. Compared to the annual average high of 10.4°C, September runs +6.9°C.
September in Slonim averages a daytime high of 17.3°C and an overnight low of 7.6°C.
September runs +6.9°C compared to Slonim's annual average high of 10.4°C, ranking #5 of 12 months by warmth.
Plan for daytime highs near 17.3°C and cooler evenings around 7.6°C.