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5 Easy Weather Science Experiments for Elementary Students

Science is super fun and what is more scientifically fueled than the weather? Well, you and your students can find out with weather science experiments! In this article, I have five easy weather science experiments that are engaging for your elementary students. Plus, they will all pump up those critical thinking skills while giving your students hands-on tasks! What experiments can do all that? Keep reading to find out!

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Why Use Weather Experiments in the Classroom

Weather is all around us! When we teach with weather science experiments your students can explore everything from the water cycle to various types of weather all while doing hands-on activities.  These hands-on experiments help students gain a deeper understanding of things like precipitation, wind, and air pressure. Not only are these five experiments great for hands-on experience, they are budget friendly and use materials that are easy to find at home or in the classroom. 

Importance of Hands-On Science Experiments in Elementary Education

Hands-on science experiments play a crucial role in elementary education. They provide students with a practical understanding of scientific concepts and encourage curiosity, critical thinking, and problem-solving skills. When it comes to teaching weather, hands-on experiments can make the subject more engaging and much easier to understand for elementary students. 

When we give students an opportunity to actively participate in experiments, they become active learners, rather than passive recipients of information. Instead, they can observe, make predictions, and draw conclusions based on their own observations and connections. 

Experiment 1: Exploring the Water Cycle

The water cycle is an essential concept in understanding weather patterns and precipitation. After all, most of what comes from the sky is water based! This weather science experiment will allow students to observe and understand the different stages of the water cycle in a hands-on way which will make it stick.

Materials needed:

  • Clear plastic cup
  • Plastic wrap
  • Ice cubes
  • Water


  • 1. Fill the plastic cup with water, leaving a few centimeters of space at the top. If you need to, draw a line where the โ€œfillโ€ line is. 
  • 2. Place a piece of plastic wrap tightly over the top of the cup, ensuring it is sealed. To expedite this, you can have your plastic wrap pre-torn. 
  • 3. Put a few ice cubes on top of the plastic wrap.
  • 4. Place the cup in a sunny spot, such as a windowsill or outdoors.
  • 5. Observe the cup over time and record any changes.

Explicit Instruction:

Once you have gone through the experiment, you should explain to students what happens scientifically. While you are explaining, make sure you ask questions about what the students observed. So, whatโ€™s the explanation for this amazing weather science project? Here you go!

The heat from the sun causes the water in the cup to evaporate, turning it into water vapor. As the water vapor rises, it comes into contact with the cooler plastic wrap and condenses into droplets. These droplets eventually accumulate and fall back into the cup, simulating the process of precipitation or rain. This experiment allows students to witness the water cycle in action and understand how water transforms from a liquid to a gas and back to a liquid again.

By engaging in this experiment, students can gain a firsthand understanding of the water cycle and its role in weather patterns. This experiment provides a solid foundation for further exploration of weather-related topics because they have witnessed evaporation, condensation, and precipitation in action which makes it a great place to start!  

The water cycle is a fundamental concept in understanding weather patterns. This experiment allows students to witness the process of evaporation, condensation, and precipitation in action.

Experiment 2:  Hands-On Activities Making a Rain Gauge

A part of science is math which this next weather science experiment focuses on. Measuring is a great way to bring math into science and an essential part of understanding weather patterns. With this simple experiment, students can create their own rain gauge and track rainfall in their area.


  • A clear plastic bottle (such as a soda bottle)
  • A ruler or measuring tape
  • Waterproof marker
  • Scissors
  • Masking tape


  • 1. Cut off the top of the plastic bottle, creating a funnel shape. If you are doing this experiment with younger students,  you may want to have them pre-cut. 
  • 2. Invert the top portion and place it inside the bottom portion of the bottle.
  • 3. Using masking tape, secure the two parts together.
  • 4. Mark measurements on the side of the bottle using the ruler and waterproof marker.
  • 5. Place the rain gauge outside in an open area, away from trees or buildings.
  • 6. After it rains, measure the amount of water collected in the gauge. This can be done at home or at school. 

By creating their own rain gauge, students can actively participate in data collection and analysis. They will learn how meteorologists measure rainfall and how it contributes to understanding weather patterns.

Experiment 3: Science Demonstrations that Investigate the Greenhouse Effect

If youโ€™re ready to dive deeper into the world of science with your students, then this experiment is for you! The greenhouse effect is a crucial concept in understanding climate change. This experiment allows students to observe how greenhouse gasses trap heat in the atmosphere. 


  • Two clear plastic containers (such as jars or cups)
  • Two thermometers
  • Plastic wrap
  • Rubber bands


  • 1. Fill both containers with the same amount of water. Because you are using more than one container, you can have students work in pairs to take the experiment to the next level. 
  • 2. Place a thermometer in each container.
  • 3. Cover one container tightly with plastic wrap, securing it with a rubber band.
  • 4. Leave both containers in direct sunlight for a few hours.
  • 5. Observe and record the temperature readings in both containers.

Students will notice that the container covered with plastic wrap has a higher temperature. This demonstrates how greenhouse gasses, like the plastic wrap, trap heat and contribute to the warming of the Earth's atmosphere.

After doing this experiment, it would be fun to do a close reading of a fiction or nonfiction text that focuses on the greenhouse effect. 

Experiment 4: Creating a cloud in a jar

A big part of reading weather is knowing how to read the clouds! Cloud formation is a fascinating weather phenomenon that can be easily demonstrated with this experiment. 


  • A clear glass jar with a lid
  • Boiling water
  • Ice cubes
  • Matches or a lighter


  • 1. Fill the jar halfway with boiling water. For this experiment, you might want to have parent volunteers to help with the hot water. 
  • 2. Place a few ice cubes on top of the water.
  • 3. Quickly close the lid and let the jar sit for a few minutes.
  • 4. Light a match or use a lighter to create smoke.
  • 5. Lift the lid slightly and introduce the smoke into the jar.
  • 6. Close the lid tightly and swirl the jar gently.

As the warm air from the boiling water rises and comes into contact with the cold lid, condensation occurs, creating a miniature cloud inside the jar. Introducing smoke helps make the cloud more visible.


Because this experiment has a few elements students canโ€™t use independently, it would be a great weather science experiment to incorporate into centers or when you can have a few parent volunteers. Students will be more observers. Once you conduct the experiment, encourage students to tell you why that reaction happened. Then, you can go into your explanation. 

Experiment 5: Building a wind vane

Weather only goes where the wind blows. Which is why understanding wind direction is essential in predicting weather patterns. With this experiment, students can build their own wind vane to observe and track wind direction. 


  • A plastic straw
  • A small piece of cardboard or paper
  • A pin or a thumbtack
  • A pencil with an eraser
  • A compass


  • 1. Cut the cardboard or paper into an arrow shape. For younger students, drawing a template on the cardboard ahead of them will be incredibly helpful. 
  • 2. Attach the arrow to one end of the plastic straw using the pin or thumbtack. If you are doing this with younger elementary students, have older students or a classroom helper there for assistance. 
  • 3. Insert the other end of the straw into the eraser of the pencil, making sure it can rotate freely.
  • 4. Use the compass to determine the directions and label them on the cardboard arrow.
  • 5. Place the wind vane in an open area, away from obstructions.
  • 6. Observe the direction the arrow points to determine the wind direction.

By building their own wind vane, students can actively engage in tracking wind direction and understand its significance in weather forecasting. Plus, because they know about clouds and precipitation, they can make predictions about the weather for the week! 

Safety Precautions for Conducting Weather Science Experiments

While these experiments are safe and suitable for elementary students, it's essential to take some precautions to ensure a safe learning environment. Here are a few guidelines to follow:

  • 1. Adult supervision is necessary, especially when handling potentially dangerous materials like matches, boiling water, or sharp objects.
  • 2. Ensure proper ventilation when conducting experiments that involve smoke or chemicals. 
  • 3. Remind students to wash their hands thoroughly after handling any materials.
  • 4. Emphasize the importance of not putting anything in their mouths or near their eyes.

By following these safety precautions, students can enjoy the learning experience while staying safe. As a matter of fact, it wouldnโ€™t be a bad idea to practice these safety precautions before you start doing weather science experiments. 

Resources for Additional Weather Science Experiments and Activities

If you're looking for more weather science experiments and activities to engage elementary students, here are some additional resources:

  • 1. Online educational platforms like Khan Academy and National Geographic Kids offer a wide range of weather-related lessons and experiments.
  • 2. Local libraries often have books specifically tailored for young learners interested in weather science.
  • 3. Weather-related apps and websites, such as Weather Wiz Kids and NASA's Climate Kids, provide interactive resources and games for students to explore weather phenomena.
  • 4. Community Members-in your area, there is a meteorologist who may be willing to come in and talk to students. In fact, he/she may have experiments they can bring to show your students as well.

By utilizing these resources, you can expand what you have available for weather-related experiments and keep your learners excited about the wonders of science.


Conclusion: Inspiring a Love for Science Through Weather Experiments

It's clear that the world of meteorology is not just about data and forecastsโ€”it's a gateway to a deeper understanding of our environment and an opportunity to spark a lifelong love for science in your students. These experiments are more than just activities; they are tools that empower students to become inquisitive, hands-on scientists, eager to discover the mysteries of the world around them. Plus, while they do these awesome weather science experiments, they are growing their critical thinking and problem solving skills. Encourage students to always ask questions, make predictions, and analyze their data. This takes our lessons beyond meteorology. It creates a scientific mindset that will benefit them in all areas of learning. 

Remember, every experiment, every observation, every question is a step towards inspiring a new generation of scientists, thinkers, and leaders. So, grab those rain gauges, set up your wind vanes, and let's continue to inspire our students with the wonders of weather science. Keep being educational rockstars, because in the world of teaching and learning, every day is an opportunity for a new discovery!

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