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Last updated: May 29, 2024

The Deadliest Days of Summer

Traffic fatalities peak in early August, but there's also a spike on the Fourth of July.

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As summer approaches, you might be excited about hot dogs on the grill, beach days, and, of course, fireworks on the Fourth of July. But one thing you might not be picturing is car crashes. From Memorial Day through Labor Day and beyond, some days are particularly deadly for driving, according to the latest data available from the National Highway Traffic Safety Administration (NHTSA).

The Deadliest Days of Summer

For the purpose of this article, we’re looking at a summer period of June 20, 2021, through Sept. 22, 2021. During this time, a total of 12,090 people were killed in car accidents. But what was the deadliest day?

Date Number of people killed in car accidents
6/20/2021 136
6/21/2021 91
6/22/2021 110
6/23/2021 110
6/24/2021 119
6/25/2021 147
6/26/2021 142
6/27/2021 140
6/28/2021 128
6/29/2021 104
6/30/2021 113
6/31/2021 0
7/1/2021 114
7/2/2021 133
7/3/2021 165
7/4/2021 172
7/5/2021 128
7/6/2021 99
7/7/2021 105
7/8/2021 94
7/9/2021 131
7/10/2021 128
7/11/2021 139
7/12/2021 100
7/13/2021 108
7/14/2021 78
7/15/2021 129
7/16/2021 132
7/17/2021 129
7/18/2021 143
7/19/2021 111
7/20/2021 99
7/21/2021 100
7/22/2021 106
7/23/2021 120
7/24/2021 165
7/25/2021 147
7/26/2021 121
7/27/2021 100
7/28/2021 112
7/29/2021 122
7/30/2021 168
7/31/2021 181
8/1/2021 150
8/2/2021 125
8/3/2021 120
8/4/2021 126
8/5/2021 135
8/6/2021 143
8/7/2021 203
8/8/2021 153
8/9/2021 100
8/10/2021 101
8/11/2021 104
8/12/2021 108
8/13/2021 129
8/14/2021 138
8/15/2021 154
8/16/2021 112
8/17/2021 104
8/18/2021 121
8/19/2021 127
8/20/2021 131
8/21/2021 145
8/22/2021 150
8/23/2021 101
8/24/2021 125
8/25/2021 121
8/26/2021 116
8/27/2021 142
8/28/2021 164
8/29/2021 142
8/30/2021 114
8/31/2021 109
9/1/2021 104
9/2/2021 128
9/3/2021 145
9/4/2021 166
9/5/2021 149
9/6/2021 139
9/7/2021 118
9/8/2021 120
9/9/2021 97
9/10/2021 145
9/11/2021 174
9/12/2021 149
9/13/2021 121
9/14/2021 101
9/15/2021 101
9/16/2021 123
9/17/2021 144
9/18/2021 155
9/19/2021 153
9/20/2021 120
9/21/2021 100
9/22/2021 106

The deadliest day for driving during this period was Aug. 7, when 203 traffic fatalities occurred, followed by July 31 (181 deaths) and Sept. 11 (174 deaths). The average from June 20 to Sept. 22, the technical start and end of summer, was 126 traffic deaths per day.

The number of traffic fatalities was fairly stable throughout the summer, aside from a peak in early August, when many more people are enjoying the weather and taking vacations.1 The spike on the Fourth of July, which was the fourth-deadliest day of the summer, is reflective of 172 deaths on the holiday.

Fatal Crashes Involving Teen Drivers

Date Number of people killed in car accidents, with drivers ages 15-19
6/20/2021 10
6/21/2021 7
6/22/2021 5
6/23/2021 5
6/24/2021 8
6/25/2021 16
6/26/2021 10
6/27/2021 11
6/28/2021 7
6/29/2021 8
6/30/2021 10
6/31/2021 0
7/1/2021 6
7/2/2021 11
7/3/2021 10
7/4/2021 9
7/5/2021 12
7/6/2021 7
7/7/2021 7
7/8/2021 2
7/9/2021 9
7/10/2021 7
7/11/2021 8
7/12/2021 9
7/13/2021 8
7/14/2021 3
7/15/2021 8
7/16/2021 5
7/17/2021 12
7/18/2021 8
7/19/2021 14
7/20/2021 6
7/21/2021 6
7/22/2021 10
7/23/2021 10
7/24/2021 9
7/25/2021 8
7/26/2021 10
7/27/2021 7
7/28/2021 2
7/29/2021 5
7/30/2021 13
7/31/2021 5
8/1/2021 13
8/2/2021 7
8/3/2021 11
8/4/2021 6
8/5/2021 7
8/6/2021 11
8/7/2021 9
8/8/2021 10
8/9/2021 4
8/10/2021 6
8/11/2021 4
8/12/2021 7
8/13/2021 6
8/14/2021 6
8/15/2021 12
8/16/2021 11
8/17/2021 7
8/18/2021 4
8/19/2021 12
8/20/2021 7
8/21/2021 12
8/22/2021 10
8/23/2021 10
8/24/2021 9
8/25/2021 6
8/26/2021 12
8/27/2021 9
8/28/2021 14
8/29/2021 5
8/30/2021 8
8/31/2021 5
9/1/2021 3
9/2/2021 7
9/3/2021 12
9/4/2021 12
9/5/2021 15
9/6/2021 7
9/7/2021 6
9/8/2021 6
9/9/2021 4
9/10/2021 16
9/11/2021 16
9/12/2021 7
9/13/2021 12
9/14/2021 5
9/15/2021 4
9/16/2021 3
9/17/2021 11
9/18/2021 8
9/19/2021 7
9/20/2021 10
9/21/2021 7
9/22/2021 11

Teen drivers have the highest crash rates of any age group due to their lack of driving experience. However, because there are fewer teen drivers on the road compared with other age groups, fewer teens died in traffic deaths in the summer of 2021 compared with other age groups.

That said, the deadliest day for teen drivers was a three-way tie, with June 25, Sept. 10 and Sept. 11 having 16 deaths each — double the summer’s average for drivers ages 15 to 19. In some areas of the country, these dates correlate with the end of school in June, when more kids are on the road, and the beginning of school in September.

TIP:

To make sure your teen driver is following the graduated driver license law, we recommend signing a parent-teen driving contract.

Common Causes of Summer Driving Crashes

The circumstances surrounding these summer traffic fatalities tell us something about their causes.

Number of people killed in car crashes in the summer of 2021

Alcohol Impairment

Alcohol impairment, where the highest driver blood alcohol concentration was above the legal limit of 0.08 percent, was involved in 32 percent of summer traffic fatalities in 2021.

It’s worth noting that drivers with DUIs on their records will have a harder time finding affordable insurance even if they didn’t cause deaths or injuries, so it’s best to always drive sober to avoid motor vehicle crashes.

Speeding

Speeding was involved in 22 percent of all traffic deaths in the summer of 2021. Unfortunately, a speeding ticket can stay on your record for years or even permanently, depending on the state where you’re licensed.

Nighttime Driving

Driving is more dangerous at night due to a lack of visibility. That same summer, 44 percent of traffic fatalities occurred during dark conditions, for a total of 5,305 deaths.

Weather

Atmospheric conditions, such as rain, were involved in 24 percent of all traffic crashes in summer 2021.

Distracted and Drowsy Driving

Less-common causes of traffic fatalities in the summer of 2021 included distracted driving, which was involved in 6 percent of deaths, and drowsy driving, which was involved in 1 percent.

Teen Drivers

Across the board, teens have higher crash rates than any other age group, but this issue is exacerbated in the summer, when many of them are out of school. It should be noted, though, that many traffic fatalities attributed to teen drivers aren’t a result of reckless driving but rather driving errors. In 37 percent of all teen driver crashes that summer, errors occurred, such as rear-ending another vehicle, turning into another vehicle at an intersection, or edging off the road.2 Believe it or not, these behaviors aren’t considered reckless driving.

What To Do After a Crash

If you’re involved in a car crash this summer or any time of year, follow these steps:

  1. Pull over. Pull over to a safe place so you are out of harm’s way.
  2. Call 911. You’ll want to call 911 if anyone is injured, but even with no injuries, you’ll probably want a police report for your insurance claim.
  3. Document the damage. Take pictures of vehicle damage to use in your claim.
  4. Exchange information. Get the other driver’s name, address, phone number, insurance information, and other relevant details you can use in your claim, like their car make, model and year; where the crash occurred; the time of day, and the weather.
  5. Make a police report. If the police cannot come to the scene, file an accident report at the closest police department. Regardless of whether you deal with the cops at the crash site or a precinct, make sure to ask all officers involved to give you their badge numbers and names. Also, ask for a copy of the accident report.
  6. Submit your claim. File your claim online, through the mail, or over the phone with your insurance agent. An adjuster will determine the fault and payouts. The process works the same way whether you were at full, partial, or no fault.3
  7. Get your car repaired. Get an estimate from a repair shop to see how much the repairs will cost.
  8. Wait for your payment. If the adjuster determines the other party was at fault, you will get compensated through a third-party claim against the other party’s liability coverage. If their property damage limit isn’t high enough or if the accident was your fault, you can use your collision coverage for reimbursement. However, if you lack collision insurance and the accident was your fault, you’ll have to pay to repair or replace your car entirely out of pocket.

NOTE:

No state requires collision insurance, which pays for your car’s damages regardless of fault.

Damages You Can Recover

  • Injuries
  • Lost wages
  • Child care costs
  • Property damage
  • Pain/suffering, depending on the state
  • Cost of a rental car, lodging, etc.
  • The rest of your vehicle loan/lease
  • Depreciation

Tips for Safe Driving

  1. Don’t be distracted. Avoid poor driving behaviors, like distracted driving, whether due to passengers in the back seat, social media use, or texting. Put your cell phone away, or turn on “Do not disturb” mode.
  2. Buckle up. Putting on your seat belt could save your life and prevent injuries from being severe.
  3. Drive during the day. The safest time to drive is during the daytime, so avoid driving at night if you can.
  4. Obey the speed limit. Drive at or below the speed limit, especially in construction zones. Speeding is one of many risky behaviors young drivers are more likely to engage in.
  5. Stay sober. Driving drunk, or even buzzed, is illegal and dangerous.

DID YOU KNOW?

In our teen speeding report, we found that 43 percent of drivers ages 16 to 18 speed, compared with 30 percent of the population across all age groups.

Conclusion

Want to learn more about the likelihood of car crashes during the warmest months? Check out these Labor Day accident statistics. Or, keep reading our frequently asked questions below to learn when car accidents are most likely to happen, who gets into car accidents the most, and where most car accidents occur.

Frequently Asked Questions

What is the deadliest day to drive?

The deadliest day to drive during the summer of 2021, according to the most recent data from the NHTSA, was Aug. 7, when 203 traffic deaths occurred — 74 percent higher than the yearly average of 117 deaths per day.

At what time do most car accidents happen?

According to the most recent NHTSA data, most car accidents happen between 6 p.m. and 6:59 p.m., when many people are traveling home from work. In 2021, 2,377 fatalities occurred during this time period, representing 6 percent of all fatalities. The next most common time slot was between 9 p.m. and 9:59 p.m., with 2,359 deaths or a little less than 6 percent of all fatalities.

What age has the most fatal accidents?

When we sorted data from the NHTSA’s Fatality Analysis Reporting System (FARS) on drivers involved in fatal crashes in 2021, the most recent year for which data is available, we found that they were most likely to be ages 25 to 34, followed by 35 to 44. (Note the extremely young ages of some “drivers” who somehow got behind the wheel unlicensed.)

Age of driver Number of drivers involved in fatal crashes in 2021 Percentage of total
5-9 4 Less than 1%
10-15 192 Less than 1%
16-20 4,986 8%
21-24 5,513 9%
25-34 13,200 22%
35-44 10,291 17%
45-54 8,764 14%
55-64 8,085 13%
65-74 4,768 8%
>74 3,263 5%
Unknown 1,838 3%
Total 60,904 n/a

However, this is somewhat misleading, since those groups contain larger age ranges, and thus more people overall, than the younger groups. For example, the 25-34 age bracket spans 10 years, whereas the 21-24 age bracket spans just four years. Some age groups have more drivers on the road, which contributes to their higher number of traffic fatalities. That said, some groups are still overrepresented, like those ages 35 to 54, while people ages 55 and older are underrepresented.

As the Federal Highway Administration did not release data about the number of licensed drivers by age for 2021, we used 2022 data instead to compare 2021 fatality rates and the number of licensed drivers by age in 2022.

Where do most fatal car accidents happen?

Most fatal car accidents happen in Texas. In 2021, 10 percent of all traffic fatalities in the U.S. occurred in Texas — a total of 4,068 deaths. The state with the second-highest number of fatalities was California, which also had about 10 percent of the nation’s total. However, these are the two most populous states in the country, so it’s not surprising that the most accidents happened in the states with the most people.

Aliza Vigderman
Written by:Aliza Vigderman
Senior Writer & Editor
A seasoned journalist and content strategist with over 10 years of editorial experience in digital media, Aliza Vigderman has written and edited hundreds of articles on the site, covering everything from plan coverages to discounts to state laws. Previously, she was a senior editor and industry analyst at the home and digital security website Security.org, previously called Security Baron. She has also contributed to The Huffington Post, SquareFoot, and Degreed. Aliza studied journalism at Brandeis University.

Citations

  1. Why is August a Deadly Driving Month? Butler Prather LLP. (2023).
    https://www.butlerprather.com/2021/07/why-is-august-a-deadly-driving-month/

  2. Comparison of teen and adult driver crash scenarios in a nationally representative sample of serious crashes. ScienceDirect. (2014, Nov).
    https://www.sciencedirect.com/science/article/abs/pii/S000145751400219X?via%3Dihub

  3. What to do at the scene of an accident. Insurance Information Institute. (2023).
    https://www.iii.org/article/scene-accident