Maine Power Outage Season
When outages happen most in Maine, and what to expect.
July is historically Maine's busiest month for recorded power outages, part of a summer season (June–August) that accounts for about 28% of all recorded outages statewide, averaging 3.4 hours per event. 15 of Maine's 16 tracked counties currently carry a Reliability Grade of F.
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Maine outages by month
Total recorded events and average duration per event, summed across every tracked county in Maine.
Peak season insight
Maine's outage season runs June–August, accounting for 28% of all recorded outages. July has the highest frequency.
Month-by-month data table
| Month | Events | Avg duration |
|---|---|---|
| January | 1,407 | 3.1 hrs |
| February | 1,228 | 2.9 hrs |
| March | 1,547 | 3.9 hrs |
| April | 1,521 | 4.2 hrs |
| May | 1,432 | 2.2 hrs |
| June | 1,837 | 2.0 hrs |
| July | 1,895 | 2.1 hrs |
| August | 1,642 | 2.4 hrs |
| September | 1,382 | 3.1 hrs |
| October | 1,646 | 4.2 hrs |
| November | 1,866 | 4.4 hrs |
| December | 1,852 | 5.8 hrs |
This month in Maine
October has historically recorded 1,646 outage events across Maine, above the state's typical monthly average. Outages that start in October have averaged 4.2 hours.
Main causes by season
Named storms behind Maine's worst recorded outages, from the NOAA Storm Events Database.
Winter (December–February)
- Flood
- High Wind
- Drought
- Heavy Snow
- Winter Storm
Spring (March–May)
- Winter Storm
- Flood
Summer (June–August)
- Thunderstorm Wind
Fall (September–November)
- Winter Storm
- High Wind
- Tropical Storm Philippe
- Tropical Storm Phillipe
- Tropical Storm Lee
Maine's worst outage events on record
The five largest outages in Maine by duration and customers affected.
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Oct 30, 2017 | 132 hrs | 109,526 (48%) | Tropical Storm Phillipe |
| Oct 30, 2017 | 126 hrs | 74,835 (55%) | Tropical Storm Phillipe |
| Apr 9, 2020 | 144 hrs | 65,190 (74%) | Winter Storm |
| Dec 18, 2023 | 153 hrs | 59,742 (68%) | Flood |
| Oct 30, 2017 | 127 hrs | 61,301 (70%) | Tropical Storm Philippe |
Highest-risk counties in Maine
Lowest reliability percentile among Maine's tracked counties.
| County | Grade | National percentile |
|---|---|---|
| Lincoln County | F | 1st |
| Hancock County | F | 1st |
| Waldo County | F | 2nd |
| Sagadahoc County | F | 2nd |
| Oxford County | F | 2nd |
Live weather alerts for Maine
There are no active National Weather Service alerts for Maine right now.
These live alerts come from the National Weather Service. They are public-safety information, not an outage prediction.
Maine power outage FAQ
When do power outages happen most in Maine?
July is historically the busiest single month for recorded outages in Maine, and Summer (June–August) accounts for about 28% of all recorded outages across the state.
How long do power outages in Maine typically last?
Across Maine's tracked counties, the average recorded outage lasts about 3.4 hours, though individual events -- especially named storms -- can run much longer.
Which counties in Maine have the highest outage risk?
Lincoln County, Hancock County, Waldo County, Sagadahoc County, Oxford County currently rank lowest for reliability in Maine. See each county's page for its full history.
Does this page predict a power outage in Maine?
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 Maine's outage season
Sized for Maine's recorded outage frequency and duration.
