March in San Isidro de El General is the windiest and the warmest month of the year. In March, the weather in San Isidro de El General is typically warm. Average daily high temperature in March is about 26 degrees above zero. On average, San Isidro de El General has 18 partly cloudy, 5 sunny, 4 rainy, and 4 cloudy days in March. The rains are usually light.