February in Ronkonkoma is the windiest month of the year. In February, the weather in Ronkonkoma is typically cold. Average daily high temperature in February is about 3 degrees above zero. On average, Ronkonkoma has 11 partly cloudy, 8 sunny, 7 rainy, and 3 cloudy days in February. The rains are usually heavy. February as well as January, March, and December is considered the most uncomfortable time to visit Ronkonkoma.