The weather forecast for San Isidro on March 20, 2026, predicts a maximum temperature of 27°C and a minimum temperature of 20°C, as reported by the National Meteorological Service (SMN). Winds are expected to be blowing at 19 km/h, while the average humidity is projected to be around 82%. This forecast suggests a warm day overall, with mild wind conditions contributing to the weather experience.

In the early morning hours, no rainfall is forecast, and the humidity will stay around 82%, accompanied by light winds coming from the east. As the morning progresses, the chances of rain remain low, maintaining similar humidity levels; moderate winds of 20 km/h from the northeast are anticipated. This indicates that locals will enjoy a pleasant morning with little disruption from adverse weather conditions.

Looking towards the afternoon and evening, the forecasts continue to suggest no significant precipitation, although light winds will persist. However, brief drizzle is expected during the night, with approximately 1 mm of rain and moderate winds of 20 km/h from the east. Overall, residents can expect a warm and humid day with some evening drizzle, typical for this time of year in the Buenos Aires region.