Weston CountyPower Outage History
2016–2025 · Wyoming
Better than average — fewer or shorter outages than most counties.
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Nov 13, 2025 | 7 hrs | 4,782 (82%) | Unnamed event |
| Feb 11, 2016 | <1 hr | 2,593 (45%) | High Wind |
| Aug 30, 2025 | 2 hrs | 1,335 (23%) | Unnamed event |
| Aug 26, 2024 | 1 hrs | 1,209 (21%) | Thunderstorm Wind |
| Dec 18, 2025 | 3 hrs | 1,179 (20%) | High Wind |
Over the 10 years from 2016 to 2025, Weston County recorded 491 distinct power outage events, averaging 2.3 hours per event.
The single worst outage on record in Weston County started November 13, 2025, lasting 7 hours and leaving up to 4,782 customers without power (82% of the county) at its peak.
August has historically been the worst month for outages in Weston County, with 83 events recorded during that month across the dataset.
Based on this history, Weston County earns a Reliability Grade of B, placing it in the 64th percentile nationally for grid reliability (higher percentile = more reliable).
Sized for Weston County's outage profile
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Outage-prep kit
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Similar counties in Wyoming
Counties with the closest reliability grade and national percentile to Weston County.
| County | Grade | National percentile |
|---|---|---|
| Sublette County | B | 64th |
| Johnson County | B | 69th |
| Albany County | B | 71st |
| Hot Springs County | B | 73rd |
| Carbon County | B | 75th |
Most reliable counties in Wyoming
The top 3 counties in Wyoming by reliability grade and percentile.
| County | Grade | National percentile |
|---|---|---|
| Teton County | A | 97th |
| Fremont County | A | 94th |
| Niobrara County | A | 93rd |
Least reliable counties in Wyoming
The bottom 3 counties in Wyoming by reliability grade and percentile.
| County | Grade | National percentile |
|---|---|---|
| Crook County | C | 41st |
| Converse County | C | 48th |
| Weston County | B | 64th |
Most reliable counties nationally
The top 3 counties nationally by reliability grade and percentile.
| County | State | Grade | National percentile |
|---|---|---|---|
| Clay County | South Dakota | A | 100th |
| Clearwater County | Minnesota | A | 99th |
| Limestone County | Alabama | A | 99th |
Least reliable counties nationally
The bottom 3 counties nationally by reliability grade and percentile.
| County | State | Grade | National percentile |
|---|---|---|---|
| Clay County | West Virginia | F | 0th |
| Lincoln County | West Virginia | F | 0th |
| Cameron Parish | Louisiana | F | 0th |
FAQ
How often does power go out in Weston County?
Between 2016 and 2025, Weston County recorded 491 outage events, averaging 2.3 hours each.
What is Weston County's reliability grade?
Weston County has a Reliability Grade of B, in the 64th national percentile.
What was the worst power outage in Weston County?
The worst outage on record started November 13, 2025, lasting 7 hours and affecting up to 4,782 customers.