For centuries, people have used weather sayings to predict changing conditions before modern forecasting technology existed. Long before satellites, computers, and advanced weather models, communities depended on careful observation of nature and generations of shared experience.

These traditional phrases were especially valuable for farmers and sailors, who needed to anticipate weather changes to protect crops, plan journeys, and make important decisions. Over time, these observations developed into the familiar weather proverbs that are still repeated today.

Red Sky at Night

The well-known phrase “Red sky at night, shepherd’s delight. Red sky in the morning, shepherd’s warning” has ancient origins and is even mentioned in the Bible in the book of Matthew. Traditionally, it was used by shepherds to interpret the appearance of the sky and prepare for upcoming weather conditions.

Different versions of this saying exist around the world, including the nautical variation “Red sky at night, sailors delight. Red sky in morning, sailors warning.” Although the wording changes, the scientific explanation behind the phenomenon remains the same.

Why Does the Sky Turn Red at Sunrise and Sunset?

This saying is most accurate in regions where weather systems usually move from west to east, such as the United Kingdom. A red sunset often indicates that stable weather is approaching from the west.

The reddish color appears when high-pressure conditions trap dust and small particles in the atmosphere. These particles scatter shorter blue wavelengths of light, allowing the longer red wavelengths to dominate and create the familiar glowing sky.

A red evening sky can suggest that a high-pressure system is moving in, often bringing calmer and drier conditions the following day. A red morning sky may indicate that the clear weather has already passed eastward and that unsettled conditions, including rain and strong winds, could arrive afterward.

St Swithun’s Day

The legend comes from St. Swithun, the ninth-century Bishop of Winchester. According to the story, he wished to be buried outside, where he would be exposed to the weather and the footsteps of passers-by.

More than 100 years later, his remains were moved into an indoor shrine on 15 July. According to folklore, heavy rain followed immediately and continued for 40 days and nights because the saint was unhappy about being relocated.

This story eventually created the belief that the weather on 15 July would determine conditions for the next six weeks.

Does St Swithun’s Day Actually Predict the Weather?

There is some connection between early summer weather patterns and later conditions, but not because of the saint’s day itself.

The jet stream plays an important role in shaping summer weather. Its position around late June and early July can influence whether the season becomes warmer and drier or cooler and more unsettled.

A jet stream located farther north is often linked with brighter, more stable weather, while a southern position can allow more unsettled conditions to develop.

However, there is no scientific evidence proving that rain on St. Swithun’s Day will continue for 40 days. Historical weather records have never shown such a prolonged period of continuous rainfall.

When Halo Rings Around the Moon or Sun, Rain Is Coming Soon

A bright circle around the Moon or Sun, known as a halo, has long been considered a warning sign of approaching rain.

These halos form when sunlight or moonlight passes through ice crystals in high-altitude clouds. The crystals bend and reflect the light, creating a visible ring around the source.

Because these high clouds can appear ahead of approaching weather systems, halos can sometimes indicate that precipitation may arrive soon. During warmer months, they may even suggest the possibility of developing storms.

However, not every ring around the Sun or Moon is a true halo. Some are coronas, which form when light is scattered by tiny water droplets inside clouds rather than refracted by ice crystals.

When the Wind Comes From the East, It Brings Trouble for People and Animals

This old saying has some basis in British weather patterns. Air arriving from the northeast often originates from colder continental regions such as Eastern Europe and Russia.

During winter, this polar continental air can bring freezing temperatures and harsh winds to Britain. In summer, the same type of air mass may produce dry and warm conditions.

Although the saying is not always accurate, eastern winds have historically been associated with some extreme weather events, particularly during colder months.

Mackerel Sky and Mare’s Tails Mean Ships Should Lower Their Sails

This phrase comes from sailors who observed cloud formations to predict dangerous weather at sea.

A “mackerel sky” refers to rows of altocumulus clouds that resemble the pattern of fish scales, while “mare’s tails” describes thin, wispy cirrus clouds that look like horse tails.

Both types of clouds can appear before changing weather and approaching storms. Their presence often indicates moisture and instability in the atmosphere, warning sailors that conditions may worsen and sails may need to be lowered.

Rain Before Seven, Clear by Eleven

This saying suggests that morning rain will often disappear by late morning.

The idea comes from the fast-moving weather systems that frequently cross the United Kingdom due to the dominant Atlantic westerly airflow. A passing rain front may move through quickly, allowing clearer skies later in the day.

However, while this sometimes happens, it is not a dependable forecast. Rain systems can easily remain for much longer than a few hours.

Cows Lie Down Before Rain Arrives

For generations, people have believed that cows lying down in fields signals incoming rain.

Several explanations have been suggested, including the idea that cows can sense changes in atmospheric pressure or increased moisture levels. Some theories claim they lie down to keep a dry area of grass available.

However, scientific research has not found evidence that cows can reliably predict rainfall. Cows lie down for many ordinary reasons, including resting, digesting food, or simply being comfortable.

Pine Cones Open When Dry Weather Approaches

Unlike many traditional weather sayings, this one is supported by science.

Pine cones naturally respond to changes in humidity. During dry conditions, their scales lose moisture, shrink, and open outward. When the air becomes damp, the scales absorb moisture, become more flexible, and close again.

This natural reaction helps pine trees release seeds under favorable conditions, making pine cones a simple example of nature’s own humidity sensor.

It Is Too Cold to Snow

Many people believe extremely cold temperatures prevent snowfall, but this is a misunderstanding.

Cold air does hold less moisture than warmer air, which can reduce the likelihood of snow. However, even very cold air can contain enough moisture to produce snowfall.

Temperature is only one factor involved in snow formation. Other elements, including humidity, cloud development, and atmospheric conditions, also determine whether snow will occur.

The Science Behind Old Weather Wisdom

Traditional weather sayings were created from centuries of observation rather than modern scientific measurement. While some have genuine connections to atmospheric processes, others are simply folklore passed down through generations.

Today’s forecasting methods are far more accurate thanks to satellites, computer models, and advanced meteorological research. However, these old sayings remain fascinating examples of how people once studied nature and searched for clues hidden in the sky, clouds, plants, and animals.