In January, Saint Peters typically sees daytime highs of 27.6°C and overnight lows around 21.9°C. Compared to the annual average high of 29.2°C, January runs -1.6°C.
January in Saint Peters averages a daytime high of 27.6°C and an overnight low of 21.9°C.
January runs -1.6°C compared to Saint Peters's annual average high of 29.2°C, ranking #12 of 12 months by warmth.
Plan for daytime highs near 27.6°C and cooler evenings around 21.9°C.