Summer 2025 Outlook. Temperatures are expected to be far warmer than average across much of the nation this summer. A final warming event is starting in the stratosphere and is forecast to impact the early spring weather in the united states and europe.

Temperatures are expected to be far warmer than average across much of the nation this summer. The summer 2024 forecast update shows a dynamic summer pattern in the atmosphere, impacted by the transition from the warm el niño to a cold la niña cycle.