July is the peak of meteorological summer and our hottest month of the year. As the Fourth of July holiday approaches, what type of weather should we expect? 

What You Need To Know

  • Very little precipitation over the past decade

  • Half of the years had temperatures above 90 degrees

  • 105 was the highest temperature

The normal high temperature stays around 90 degrees during the entire month of July. 

After looking back at the past decade of weather in St. Louis on the Fourth of July, some of the data may surprise you.

Temperatures

The hottest Fourth of July was in 2012, when the mercury soared to 105 degrees. That set a new daily record high temperature, which still stands today.

The coolest Fourth of July was back in 2016, when the high temperature only hit 81 degrees. Average high and low temperatures are 89 degrees and 71 degrees. 

Three years in a row (2013–2015) had a high of 84 degrees. Since 2018, we’ve reached 90 degrees or higher every year on the date.

 

 

Precipitation

This date hasn’t produced much rainfall for us, with only two of the last ten years recording any rain and rainfall was less than 0.25” both times.  

What does this all tell us? That our Fourth of July in St. Louis is usually a dry day with temperatures in 80s or 90s. How does this compare with the current forecast?

 

Fireworks and weather

As for how the weather can affect a fireworks display? Lightning may be problematic to not only the spectators but also to unlit fireworks.

Humidity affects the vibrancy of the colors displayed, and winds might endanger the crowd. Read more about the weather impacts on a fireworks show.