Overview

• AEMET-based reports for Galicia point to a warm, dry Friday with clear to mostly sunny skies and highs generally between 26°C and 31°C, with negligible rain chances.
• Monterrey faces a humid, unstable setup with showers persisting and thunderstorm odds rising from about 40% in the afternoon to 60% at night, with temperatures near 21–30°C and gusts up to 30–35 km/h.
• Argentina’s agroclimatic outlook projects a heat pulse in the north followed by a frontal episode bringing 10–75 mm broadly and locally more than 100 mm plus hail and strong gusts in northern Entre Ríos and much of Uruguay.
• A post-frontal polar air mass is expected to drive minimums below 0°C in serranías of NOA and Cuyo, potentially reaching −5°C and elevating frost risk for late-winter crops.
• Argentina’s national weather service issued orange and yellow alerts on September 18 for intense storms and heavy rain across multiple provinces, alongside standard safety guidance for the public.