Severe weather warning: Thunderstorms and squalls are threatening in Gießen!
Giessen expects changeable weather on Dormouse Day. Gusts and thunderstorms could move across Hesse. Details here.

Severe weather warning: Thunderstorms and squalls are threatening in Gießen!
The hot weather continues in Cologne, but at the same time there is a threat of squalls and thunderstorms, a change in the weather that is particularly remarkable. The warning map from the German Weather Service (DWD) shows current reports of wind and gusts of wind for all districts in Hesse. The storm over Scandinavia is bringing warm sea air and could soon cause severe storms. According to the forecasts, northern Hesse will be particularly affected, where thunderstorms as well as hail and heavy rain are expected on Monday, June 23rd. The temperatures could exceed 30 degrees, but on Tuesday and Wednesday the area will remain largely free of precipitation, before thickening clouds and showers move in again from Wednesday night, as the Giessener General reported.
But even if the weather seems mixed this week, many Cologne residents are turning their attention to next Friday, June 27th, which is celebrated as Dormouse Day. A day that is not only significant for farmers but is also known and appreciated for ancient weather rules. A particularly common farming rule states: “If it rains on Dormouse Day, the rain may not go away for seven weeks,” suggesting that the weather on that day could have a major impact on midsummer. This rule has its origins in a legend about seven brothers who retreated into a cave during the persecution of Christians and only woke up centuries later. According to GoFeminin, the weather situation on this day is often influenced by the weather phenomenon of the jet stream.
The influence of the jet stream
Meteorologists have found that the accuracy of this weather rule has often been in the past due to the effects of the jet stream. This can present itself in a north or south curve: a north curve indicates unstable weather and low pressure areas, while the south curve brings mild weather conditions with high pressure. The jet stream typically remains stable for a few weeks in midsummer, helping to predict the coming weeks. The forecasts for Dormouse Day 2025 show that the weather could be mild, with temperatures around 22 degrees, even up to 29 degrees in the south, and up to 30 degrees in the western and eastern regions, as GoFeminin reports.
Weather forecast and farming rules
It's almost fascinating how old farming rules and modern meteorology complement each other. People have used natural signs to predict the weather for thousands of years - whether it's the dew in the morning that indicates sunny days or the behavior of ants that hide in bad weather. Over the centuries, rhyming weather formulas have become established that are still very popular in agriculture today. However, science has turned its attention to clouds, which are also important indicators of the weather. For example, while cirrus clouds indicate a warm front and cumulonimbus clouds signal severe weather, the means of weather observation have developed enormously since modern times. Instruments such as thermometers, barometers and modern satellites enable more precise forecasts, which will also shape the future of weather understanding, as Planet Wissen explains.