Siskiyou CountyPower Outage History
What this grade means
Bottom 20% least reliable nationally — frequent and/or long outages. This county ranks in the least reliable fifth of all US counties in our dataset: some combination of frequent outages, long restoration times, or customers affected puts it near the bottom nationally. Backup power is worth prioritizing here rather than treating it as optional.
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Aug 7, 2017 | <1 hr | 20,213 (76%) | Wildfire |
| Aug 25, 2025 | 4 hrs | 19,359 (73%) | Unnamed event |
| Jul 3, 2022 | 1 hrs | 16,877 (63%) | Unnamed event |
| Aug 10, 2019 | 3 hrs | 15,774 (59%) | Wildfire |
| Jun 25, 2025 | 2 hrs | 13,380 (50%) | Unnamed event |
Was There an Outage on a Specific Date?
Pick a date to see whether a power outage was recorded for Siskiyou County, California that day.
Over the 9 years from 2017 to 2025, Siskiyou County recorded 838 distinct power outage events, averaging 4.2 hours per event.
The single worst outage on record in Siskiyou County started August 7, 2017 (Wildfire), lasting less than 1 hour and leaving up to 20,213 customers without power (76% of the county) at its peak.
July has historically been the worst month for outages in Siskiyou County, with 121 events recorded during that month across the dataset.
Based on this history, Siskiyou County earns a Reliability Grade of F, placing it in the 20th percentile nationally for grid reliability (higher percentile = more reliable).
Similar counties in California
Counties with the closest reliability grade and national percentile to Siskiyou County.
| County | Grade | National percentile |
|---|---|---|
| Mono County | F | 19th |
| Inyo County | F | 16th |
| Marin County | F | 16th |
| Yuba County | F | 15th |
| Sonoma County | F | 13th |
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 Siskiyou County?
Between 2017 and 2025, Siskiyou County recorded 838 outage events, averaging 4.2 hours each.
What is Siskiyou County's reliability grade?
Siskiyou County has a Reliability Grade of F, in the 20th national percentile.
What was the worst power outage in Siskiyou County?
The worst outage on record started August 7, 2017 (Wildfire), lasting less than 1 hour and affecting up to 20,213 customers.