Nature

used to suggest that empty or unoccupied spaces tend to be filled quickly by other things or forces

Nature abhors a vacuum, so if you don't fill the garden bed with plants, weeds will quickly take over.

used to suggest that a lack of rain in March, abundant rain in April, and cooler temperatures in May, are beneficial for agriculture, leading to a bountiful harvest

My grandfather was a farmer, and he always said that weather predictions like: a dry March, a wet April and a cool May fill barn and cellar and bring much hay still held true in determining a good harvest.

used to warn against discarding warm or heavy clothing until the end of May, as the weather can still be unpredictable and cold during the early spring months

The hiker was tempted to leave her warm jacket behind on a sunny April day, but remembered the proverb do not cast a clout until May be out and decided to keep it with her just in case the weather changed.

used to highlight the importance of weather conditions during the early part of the year for agricultural purposes

The farmer was concerned about the dry weather in February, remembering the old proverb that if in February there be no rain, it is neither good for hay nor grain, and worried that his crops might not yield as much as he had hoped.

used to suggest that as winter continues and the days become shorter, the weather becomes colder and more severe, and people should prepare accordingly

The farmer knew that as the day lengthens, so the cold strengthens, and he made sure to prepare his crops and livestock for the harsh winter ahead.

used to imply that that the rainy days of April contribute to the growth and blooming of flowers in May

Despite the fact that the rain in April can be inconvenient, it is important to remember that April showers bring May flowers.