A nationwide analysis of 2024 fatal crash data reveals that roadway danger in the United States shifts dramatically throughout the year, with no single month dominating risk across all states. The study, conducted by Sweet James, examined fatal motor‑vehicle crashes across all 50 states and the District of Columbia, identifying the deadliest month for each state and for five major crash categories: overall fatalities, DUI‑involved crashes, speeding‑related crashes, distracted‑driving crashes, and pedestrian fatalities.
The findings show that while October stands out as the most common peak month for fatal crashes overall, other crash types follow entirely different seasonal patterns. The result is a complex portrait of roadway risk that varies by region, driving behavior, and environmental conditions.
October Leads Overall Fatal Crashes
Across the country, October recorded the highest number of fatal crashes in 2024. It was the deadliest month in 24 states, more than any other month.
National Totals
- Total fatal crashes in 2024: 36,297
- October fatalities: 3,369
- August fatalities: 3,342
- September fatalities: 3,277
Regional Trends
- South: October dominated in 10 of 16 states
- Midwest: September was more common
- Northeast: July and October tied
- West: Mixed patterns, but October still prominent
States With Highest October Fatality Rates
| State | Rate per 100k | Notes |
|---|---|---|
| Wyoming | 2.04 | Rural highways, low population |
| Mississippi | High | Elevated per‑capita risk |
| Montana | High | Long rural corridors |
| South Carolina | High | Consistent seasonal spikes |
| Alabama | High | Fall danger aligns with regional trends |
States with the lowest October fatality rates included the District of Columbia, Massachusetts, Rhode Island, New York, and Utah.
DUI Fatalities Peak in Late Summer
Impaired‑driving crashes followed a different pattern. September emerged as the deadliest month for DUI‑related fatalities in 18 states, while June led in 16.
National DUI Totals
- Total DUI‑involved fatal crashes: 5,477
- September fatalities: 534
- June fatalities: 519
- August fatalities: 509
States With Highest DUI Fatality Rates
| State | Notes |
|---|---|
| Tennessee | Highest rate nationwide |
| West Virginia | High concentration in late summer |
| Oregon | Elevated DUI risk |
| Alaska | Seasonal spikes |
| Connecticut | Early‑summer peak |
The overlap between DUI peaks and the start of football season is notable. Labor Day weekend historically carries a significantly higher DUI fatality risk, and fall accounts for roughly one‑quarter of all impaired‑driving deaths nationwide.
Speeding Fatalities Surge in May
Speeding produced the clearest seasonal trend in the study. May was the deadliest month for speeding‑related fatal crashes in 33 states.
National Speeding Totals
- Total speeding‑related fatal crashes: 10,203
- May fatalities: 962
- September and August followed closely
States With Highest Speeding Fatality Rates
| State | Rate per 100k | Notes |
|---|---|---|
| Tennessee | 1.63 | Highest in the country |
| Oregon | High | Rural highways |
| Wyoming | High | Long‑distance travel |
| Mississippi | High | Elevated risk |
| Montana | High | Rural exposure |
May’s timing aligns with the start of the “100 Deadliest Days,” a period between Memorial Day and Labor Day when teen‑driver fatalities spike. More motorcycles on the road and increased travel also contribute to the surge.
Distracted Driving Peaks in March
Distracted‑driving fatalities clustered around early spring. March was the deadliest month in 33 states.
National Distracted‑Driving Totals
- Total distracted‑driving fatal crashes: 2,955
- March dominated state‑level peaks
- June and February followed distantly
States With Highest Distracted‑Driving Fatality Rates
| State | Notes |
|---|---|
| District of Columbia | Highest rate |
| South Carolina | Elevated risk |
| Kansas | High concentration |
| Tennessee | Consistent seasonal spikes |
| Oklahoma | Rural and urban mix |
Spring travel patterns may play a role. Popular spring‑break destinations see increased crash rates, and unfamiliar roads often lead to more reliance on navigation systems and split‑second decisions.
Pedestrian Fatalities Rise in Winter
Pedestrian‑involved fatal crashes showed the strongest seasonal concentration. January was the deadliest month in 37 states.
National Pedestrian Totals
- Total pedestrian fatalities: 7,049
- November recorded the highest national total (728)
- October and December followed closely
States With Highest Pedestrian Fatality Rates
| State | Notes |
|---|---|
| Nebraska | Highest rate |
| Tennessee | Elevated winter risk |
| Mississippi | High concentration |
| Nevada | Seasonal spikes |
| District of Columbia | Dense urban exposure |
Reduced daylight, holiday travel, and increased congestion contribute to winter pedestrian danger.
What the Patterns Reveal
The study makes clear that roadway risk is not uniform. Each crash type follows its own seasonal rhythm:
- Overall fatalities: Fall
- DUI: Late summer and early fall
- Speeding: May
- Distracted driving: March
- Pedestrian fatalities: Winter
Environmental conditions, travel patterns, and driver behavior all play a role. The data underscores the importance of understanding seasonal risk to improve roadway safety and reduce fatalities.
