Pasadena Climate

In January, the average high temperature in Pasadena is 70 F (21 C), and the average low temperature is 44 F (7 C). Winter night-time temperatures are typically cooler than the day-time by 24 F (13 C). Average precipitation in January is 4.5 inches (11.4 cm). We recommend that you bring an umbrella and light jacket and/or pullover, but be prepared for warm weather, up to 90 F (32 C).

More Pasadena weather information:

http://www.weather.com/weather/tenday/USCA0840