Possibly, but it could also be caused by somebody using a device that creates a lot of EM interference across the key bands, such as a Microwave oven. If it were me, I'd want to test in order to see if the issue impacted both 2.4GHz and 5GHz at the same time and, when it occurs, whether the same problem occurs on a wired link to the router too. Doing that testing may narrow down the culprit.
Might also help if you told us what router and devices you're using?