National Weather Observers Day - May 4
Mon, May 4, 2026

National Weather Observers Day

National Weather Observers Day is an American observance dedicated to professionals and volunteers involved in meteorology and weather observation. Thanks to their work, communities receive timely information about weather conditions and warnings about potentially dangerous natural events. National Weather Observers Day is observed annually on May 4.

History of National Weather Observers Day

National Weather Observers Day was established in 1989 by Alan Brew to recognize the contributions of weather observers, both professional and amateur. Systematic weather observation has long been essential for agriculture, transportation, public safety, and scientific research.

The observance also highlights the role of volunteer networks that support meteorological data collection. One such initiative is CoCoRaHS (Community Collaborative Rain, Hail and Snow Network), which allows individuals to contribute local precipitation data and learn practical observation skills. These collective efforts support forecasting, climate research, and emergency preparedness.

Interesting Facts About National Weather Observers Day

  • Sunlight takes approximately eight minutes to travel from the Sun to Earth.
  • During heavy rainfall, individual raindrops can reach relatively high falling speeds due to gravity and air resistance.
  • Historical records show that the River Thames in England froze for extended periods during particularly cold winters in the 17th century.

How National Weather Observers Day Is Observed

This day may be observed by learning more about meteorology and the science behind weather forecasting. Some people explore publicly available weather data, follow forecasts more closely, or read about atmospheric phenomena.

It is also a time to acknowledge the work of meteorologists, climate researchers, and volunteer observers whose efforts contribute to public safety and scientific understanding.

When Is National Weather Observers Day in 2026?

National Weather Observers Day is observed on May 4 each year.

Observations

Weekday Month Day Year
Monday May 4 2026
Tuesday May 4 2027
Thursday May 4 2028
Friday May 4 2029

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