In January, San Tan Valley typically sees daytime highs of 18.3°C and overnight lows around 3.0°C. Compared to the annual average high of 29.7°C, January runs -11.5°C.
January in San Tan Valley averages a daytime high of 18.3°C and an overnight low of 3.0°C.
January runs -11.5°C compared to San Tan Valley's annual average high of 29.7°C, ranking #12 of 12 months by warmth.
Plan for daytime highs near 18.3°C and cooler evenings around 3.0°C.