In January, San Jose typically sees daytime highs of 30.2°C and overnight lows around 22.6°C. Compared to the annual average high of 31.0°C, January runs -0.8°C.
January in San Jose averages a daytime high of 30.2°C and an overnight low of 22.6°C.
January runs -0.8°C compared to San Jose's annual average high of 31.0°C, ranking #11 of 12 months by warmth.
Plan for daytime highs near 30.2°C and cooler evenings around 22.6°C.