In January, Lahti typically sees daytime highs of -4.9°C and overnight lows around -11.9°C. Compared to the annual average high of 7.8°C, January runs -12.7°C.
January in Lahti averages a daytime high of -4.9°C and an overnight low of -11.9°C.
January runs -12.7°C compared to Lahti's annual average high of 7.8°C, ranking #12 of 12 months by warmth.
Plan for daytime highs near -4.9°C and cooler evenings around -11.9°C.