Unplug everything that has a plug attached to it. Consider even the freezer and the fridge.
And by everything I mean: do a room-to-room sweep. If you must; flip the main-switch.
Have you installed new gadgets in the meantime? Maybe a powerplug for your internet? Charger?
A ventilator over your head? Airco, boiler, central heating pump. Things you normally “don’t notice”.
BTW household appliances (hoover) are notorious for causing ripples in the net when starting up.
Some things even apply to your neighbours, if they are connected to the same fase on the grid as you.
IF you’re on a 3-fase connection to the grid, try to feed your wifi stuff from an other fase.
Have you had a cold snap or any sudden change of weather come thru recently, such as the night before they quit working? Are all of the outdoor sensors battery powered?
when our wireless stations sporadically stopped showing sensor signals,
we relocated the sensors/station. that worked until it did not.
(we have only two: LaCrosse and Oregon Scientific)
we reset everything and they worked until they quit.
bottom line: insects were getting inside the sensors.
apparently, some insects LIKE electricity.
“There are a variety of insects that have an affinity for electrical hardware…”
During the day today they all started picking up their signals again. Not all at once but over 12 hours or so.
I live in a rural area and no neighbors are too close. The hardware and batteries all look visually OK - no cracks, corrosion, bugs or water. Nothing new in the house. I have shut off individual breakers in the house but never all at once which is what I will try if this happens again.
This event started on Oct. 5 in the early AM EDT probably around 3:00 AM give or take an hour.
The event last year was on Sunday June 2 but I don't know the time. Here is a link that a friend sent me at the time that seemed like it could have been connected to.
I know nothing about the site but it was interesting to see what supposedly happened at the same time.
I don't know the MHz but will check into it.
One or two or even three having problems at once might happen but five unrelated ones at the same time points to something other than the weather stations themselves. It just tough finding it.