February in Fairview Heights is the cloudiest month of the year. In February, the weather in Fairview Heights is typically cold. Average daily high temperature in February is about 4 degrees above zero. On average, Fairview Heights has 8 cloudy, 8 partly cloudy, 7 sunny, and 6 rainy days in February. The rains are usually moderate. February as well as January, March, and December is considered the most uncomfortable time to visit Fairview Heights.