Final answer:
In spring with sunny, clear skies and a temperature of 7°C, windy weather is the most likely condition to be aware of as it is common during chilly days despite clear skies.
Step-by-step explanation:
If it is spring and you observe that it is 7°C with sunny, clear skies, the conditions you might need to be aware of primarily include the possibility of windy weather. Sunny and clear conditions suggest that rainy or snowy weather is less likely, especially with a temperature of 7°C, which is above freezing but can still be quite chilly, often accompanied by wind. Weather can change rapidly; however, the current observations suggest that windy conditions are most probable, given the clear state of the skies.