Violent Crime By Time And Month


We analyze the time of day and months when violent crime occurs. Months for property crime is included.

You can summarize by suggesting that the midnight-1:00 a.m. time slot during warmer months is the most dangerous for reported violent crime, but there is no safe time or month when it comes to lowering your chances for violent victimization. It’s a matter of degree of risk.

For example, there isn’t a huge difference between midnight to 1:00 a.m. (time period recording the most violent crime) and 3:00 p.m. to 11:00 p.m. The early morning hours of 2:00 to 8:00 a.m. have the lowest numbers of violent crime.

It’s somewhat similar for monthly differences. January-February has the lowest violent numbers and May-August has the highest.

But the numerical differences for 330 million Americans based on 18,000 reporting law enforcement agencies indicate that there is no safe month or time for crime. Again, it’s a matter of degree.


Readers ask for the most dangerous months and times for violent crime with the presumption that knowing this allows them to take extra precautions or judge their degree of risk.

Every summer, there are media reports of law enforcement agencies gearing up for the “dangerous” summer months.

For our analysis, I use crimes reported to law enforcement via the FBI. Please note that, according to the Bureau of Justice Statistics of the US Department of Justice, only 41 percent of violent crime is reported to law enforcement agencies. Regardless there are sufficient numbers below to guide us as to time and month.

There are charts from the FBI and their National Incident-Based Reporting System (NIBRS-below) that are insightful. One focuses on times violence happens. It’s supplemented by a previous article as to the month’s violent crime occurs. I asked the FBI to update this data.

This is the fifth and final article in a series using FBI-NIBRS data including, Most Violent Crime Does Not Involve FirearmsMost Crimes Do Not Involve Arrest, The Probability Of Violent Victimization, and Where Violent Crime Happens.

When Violent Crime Happens


As a young police officer, I was told that there were two types of people out after midnight, cops and those under the influence of drugs and alcohol. Per the chart below, the largest number of violent crimes happen from midnight to 1:00 a.m.

Homicides, assaults, and sex offenses have higher numbers during this time period.

But beyond that time slot, early to mid-morning acts of violence shrink considerably but rise again beginning at 8:00 a.m.


Generally speaking, beyond Noon, the time slots correlated with violent crime seems to be fairly evenly spaced. It’s interesting that the 11:00 p.m. to midnight slot is the second-lowest for evenings considering what we discussed above regarding the largest number of violent crimes happening from midnight to 1:00 a.m.

Yes, there are differences for violent crime for the 5:00 a.m. hour (17,270) and midnight to 1:00 (81,959). But during most waking hours,  there are 45,000 to 79,000 violent crimes per hour.

The numerical difference for most time slots may not be a profound issue when spread over 330 million US citizens and 18,000 law enforcement agencies.

When Violent Crime Happens

Months When Violent Crime Happens

There is endless debate as to which months are more prevalent for violent and property crime.

I use data for 2015 (chart below) but I asked the FBI for updated violent crime data for 2015 through 2018 (2018 is the last full report as of this writing). The 2015 datasheet presents better for the writing format I’m using. I incorporate 2015-2018 data for violent crime in my findings.

December Dominates?

December seems to dominate all other months for violent and property crime, which doesn’t make sense. Crime is usually a warm-weather proposition.

December has always been a high month for robberies, but it’s the warm weather months that lead for violent crime.

It turns out that the data is flawed by police agencies submitting their numbers at the end of the calendar year, which inflates December data.

From the FBI: “Our Crime Statistics Management Unit advised that sometimes when a state/agency sends data once a year, the figures fall in December, inflating the December totals.”

Thus we discard December data and look to the other months for guidance.

Violent Crime And The Warm Weather Months

May through August have the highest violent crime numbers.

January-February has the lowest numbers.

But most months fall into the 80,000-100,000 range. Yes, there are variations between warm and cold weather months, but most months share more commonality than differences.

I understand that warm weather months bring increasing crime concerns, but the numerical difference between most months and the 100,000+ for the summer months may not be a profound issue when spread over 330 million people and 18,000 law enforcement agencies in the U.S.

The lesson seems to be that we have more consistency than variations, thus every month is a concern for violent crime.

Months For Property Crime-2015

The concern as to law enforcement agencies reporting all crimes in December (thus inflating December data) continues to apply to property crimes.

We will not use December data for our analysis.

May through October are the highest months for property crime.

January through March are the lowest months.

But most months are in the 450,00 (February) to 650,000 (August) range.

Thus, like violent crime, property crime remains a concern throughout the year and spread between 330 million people, the differences are not profound.

See Chart Below For 2015

Source: Crime By Month


You can summarize the above by suggesting that the midnight-1:00 a.m. time slot during warmer months are the most dangerous for reported violent crime.

“But,” and it’s a big “but,” violence occurs throughout the day and year with some degree of constancy.  Yes, cold weather months and the early morning time slots seem “safer,” but, quite simply, there is not a time or month where you are safe from violent crime. It’s a matter of degree.

Property crimes mostly occur during the warmer months.

Crime Prevention

For additional crime prevention techniques, see Prevention.

The FBI’s National Incident-Based Reporting System (NIBRS)-Background

Implemented to improve the overall quality of crime data collected by law enforcement, NIBRS captures details on each single crime incident, as well as on separate offenses within the same incident, including information on victims, known offenders, relationships between victims and offenders, arrestees, and property involved in crimes. Unlike data reported through the UCR Program’s traditional Summary Reporting System, an aggregate monthly tally of crimes, NIBRS goes much deeper because of its ability to provide circumstances and context for crimes like location, time of day, and whether the incident was cleared.

As recommended by professional law enforcement organizations, the FBI has made the nationwide implementation of NIBRS a top priority because NIBRS can provide more useful statistics to promote constructive discussion, measured planning, and informed policing.

The vision for NIBRS is for it to become the law enforcement community’s standard for quantifying crime, which will help law enforcement and communities around the country use resources more strategically and effectively. In 2018, approximately 44 percent of U.S. law enforcement agencies that participated in the UCR Program submitted data via NIBRS.

When used to its full potential, NIBRS identifies, with precision, when and where crime takes place, what form it takes, and the characteristics of its victims and perpetrators. Armed with such information, law enforcement can better define the resources it needs to fight crime, as well as use those resources in the most efficient and effective manner.

NIBRS, 2018, is available at FBI.

More information about the NIBRS transition is available on the NIBRS webpage at FBI.

See More

See more articles on crime and justice at Crime in America.

Most Dangerous Cities/States/Countries at Most Dangerous Cities.

US Crime Rates at Nationwide Crime Rates.

National Offender Recidivism Rates at Offender Recidivism.

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Author information

Leonard Sipes

Leonard Adam Sipes, Jr. – Retired federal senior spokesperson. Thirty-five years of award-winning public relations for national and state criminal justice agencies. Interviewed multiple times by every national news outlet. Former Senior Specialist for Crime Prevention for the Department of Justice’s clearinghouse. Former Director of Information Services, National Crime Prevention Council. Former Adjunct Associate Professor of criminology and public affairs-University of Maryland, University College. Former advisor to presidential and gubernatorial campaigns. Former advisor to the “McGruff-Take a Bite Out of Crime” national media campaign. Certificate of Advanced Study-Johns Hopkins University. Aspiring drummer.


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