The phrase "was overcast" refers to the dull, dark, and cloudy weather conditions that we often experience on cloudy days. The antonyms of "was overcast" would be sunny, bright, clear, and cloudless. When the sky is clear, bright, and cloudless, it evokes a sense of happiness, warmth, and positivity. A sunny day is perfect for outdoor activities while a warm and clear night is ideal for stargazing. Conversely, an overcast day may be gloomy and somber, making it difficult to enjoy outdoor activities. Therefore, having a clear and sunny day can make a significant difference in our mood and overall well-being.