Weld CountyPower Outage History
What this grade means
Better than average — fewer or shorter outages than most counties. This county's outage history is better than the national median: recorded outages are less frequent and/or shorter in duration than a typical US county experienced over the same 12-year period. It isn't in the top tier nationally, but its track record points to lower-than-average outage risk.
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Mar 23, 2016 | 50 hrs | 39,618 (29%) | Winter Storm |
| Mar 14, 2021 | 58 hrs | 31,733 (23%) | Winter Storm |
| Feb 15, 2019 | <1 hr | 22,527 (16%) | Unnamed event |
| Aug 18, 2023 | 2 hrs | 18,854 (14%) | Unnamed event |
| Jul 29, 2023 | 3 hrs | 17,817 (13%) | Thunderstorm Wind |
Was There an Outage on a Specific Date?
Pick a date to see whether a power outage was recorded for Weld County, Colorado that day.
Over the 12 years from 2014 to 2025, Weld County recorded 1,604 distinct power outage events, averaging 2.0 hours per event.
The single worst outage on record in Weld County started March 23, 2016 (Winter Storm), lasting 50 hours and leaving up to 39,618 customers without power (29% of the county) at its peak.
June has historically been the worst month for outages in Weld County, with 222 events recorded during that month across the dataset.
Based on this history, Weld County earns a Reliability Grade of B, placing it in the 61st percentile nationally for grid reliability (higher percentile = more reliable).
Similar counties in Colorado
Counties with the closest reliability grade and national percentile to Weld County.
| County | Grade | National percentile |
|---|---|---|
| Lake County | B | 62nd |
| La Plata County | B | 66th |
| Lincoln County | B | 66th |
| Elbert County | B | 68th |
| Gilpin County | C | 55th |
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 Weld County?
Between 2014 and 2025, Weld County recorded 1,604 outage events, averaging 2.0 hours each.
What is Weld County's reliability grade?
Weld County has a Reliability Grade of B, in the 61st national percentile.
What was the worst power outage in Weld County?
The worst outage on record started March 23, 2016 (Winter Storm), lasting 50 hours and affecting up to 39,618 customers.