New Jersey Power Outage Season
When outages happen most in New Jersey, and what to expect.
July is historically New Jersey's busiest month for recorded power outages, part of a summer season (June–August) that accounts for about 33% of all recorded outages statewide, averaging 2.1 hours per event. 4 of New Jersey's 21 tracked counties currently carry a Reliability Grade of F.
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New Jersey outages by month
Total recorded events and average duration per event, summed across every tracked county in New Jersey.
Peak season insight
New Jersey's outage season runs June–August, accounting for 33% of all recorded outages. July has the highest frequency.
Month-by-month data table
| Month | Events | Avg duration |
|---|---|---|
| January | 3,080 | 2.1 hrs |
| February | 2,970 | 2.1 hrs |
| March | 3,479 | 2.9 hrs |
| April | 3,482 | 1.9 hrs |
| May | 3,885 | 1.7 hrs |
| June | 5,056 | 2.3 hrs |
| July | 5,635 | 2.2 hrs |
| August | 4,797 | 2.5 hrs |
| September | 3,979 | 1.8 hrs |
| October | 4,048 | 1.7 hrs |
| November | 3,755 | 1.7 hrs |
| December | 3,474 | 2.3 hrs |
This month in New Jersey
October has historically recorded 4,048 outage events across New Jersey, above the state's typical monthly average. Outages that start in October have averaged 1.7 hours.
Main causes by season
Named storms behind New Jersey's worst recorded outages, from the NOAA Storm Events Database.
Winter (December–February)
- High Wind
- Winter Storm
- Winter Weather
- Strong Wind
Spring (March–May)
- High Wind
- Winter Storm
- Winter Weather
- Strong Wind
- Thunderstorm Wind
Summer (June–August)
- Hurricane Barry
- Hurricane Isaias
- Thunderstorm Wind
- Heat
- Tropical Storm Isaias
Fall (September–November)
- Thunderstorm Wind
- Drought
- Flood
New Jersey's worst outage events on record
The five largest outages in New Jersey by duration and customers affected.
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Aug 4, 2020 | 154 hrs | 202,864 (59%) | Hurricane Isaias |
| Aug 4, 2020 | 143 hrs | 216,332 (66%) | Hurricane Isaias |
| Aug 4, 2020 | 155 hrs | 140,979 (33%) | Hurricane Isaias |
| Aug 4, 2020 | 151 hrs | 133,793 (61%) | Hurricane Isaias |
| Aug 4, 2020 | 171 hrs | 85,509 (22%) | Hurricane Isaias |
Highest-risk counties in New Jersey
Lowest reliability percentile among New Jersey's tracked counties.
| County | Grade | National percentile |
|---|---|---|
| Sussex County | F | 6th |
| Hunterdon County | F | 8th |
| Morris County | F | 13th |
| Warren County | F | 13th |
| Monmouth County | D | 26th |
Live weather alerts for New Jersey
There are no active National Weather Service alerts for New Jersey right now.
These live alerts come from the National Weather Service. They are public-safety information, not an outage prediction.
New Jersey power outage FAQ
When do power outages happen most in New Jersey?
July is historically the busiest single month for recorded outages in New Jersey, and Summer (June–August) accounts for about 33% of all recorded outages across the state.
How long do power outages in New Jersey typically last?
Across New Jersey's tracked counties, the average recorded outage lasts about 2.1 hours, though individual events -- especially named storms -- can run much longer.
Which counties in New Jersey have the highest outage risk?
Sussex County, Hunterdon County, Morris County, Warren County, Monmouth County currently rank lowest for reliability in New Jersey. See each county's page for its full history.
Does this page predict a power outage in New Jersey?
No. It describes patterns in recorded county-level outage history, not a guaranteed future event. Check the live National Weather Service alerts below for current conditions.
Prepare for New Jersey's outage season
Sized for New Jersey's recorded outage frequency and duration.
