In December, Fort Smith typically sees daytime highs of 11.6°C and overnight lows around -0.5°C. Compared to the annual average high of 22.7°C, December runs -11.0°C.
December in Fort Smith averages a daytime high of 11.6°C and an overnight low of -0.5°C.
December runs -11.0°C compared to Fort Smith's annual average high of 22.7°C, ranking #11 of 12 months by warmth.
Plan for daytime highs near 11.6°C and cooler evenings around -0.5°C.