I monitored during the past few days in several games of my teams that my kickers (kicking accurancy 95 - 100) scored 0 / xx FGs out of various distances from very short to 50+ YDS.
PATs working normal.

Have you checked depth charts for kickers? and long snappers? - obvious I know

Best available were active.

The weather app changed but i doubt its that causing random missed FGs. My current snapper is at 60, holder is at 18 skill and my kicker is 8/10........hes not the best, but he doesn't try 50 yarders either.

The one kicker had 90+ percentage in FG out of all distances and in that peculiar game he missed 5 of 5 FG, 3 shorter than 40 yds, 1 40+ and 1 50+, however he scored all 3 PATs. Very strange.

Minor in-game injury?

Negative. But it seems to work properly again. Just like the phenomenon of the many Kick or Punt Return TDs in one game. This is also back to normal random.

FWIW my % in both my leagues are way down at 55 yrds+.
My nukes have an older kicker, and who knows what RE: progress right now.. Grrr. It'l come.
That said, my beta team finally in week 8 took a FG at 51 yrds, The previous longest attempt was 41, and my MISC is set at 56-58 yrds. Just kinda weird and I admittedly have not gone into the .csv's for my beta team at the depths i'd like to, including FG attempts by average ball placement.

I guess my point is that I have seen FGs being abnormal for all 3 of my teams within their current season relative to their previous seasons by year, and by average success rate by distance, and I concur with the OP.

Long snapper and Kick holders are SO important to the kicking game too

Couple of very recent comments from JDB:

"there is literally only three influences on the kick: the accuracy, strength, and the holder's skill. Longer kicks will be impacted more by the wind, but in general that doesn't make a huge difference."

"Long snapper skill determines whether the holder will be able to field the snap, but doesn't impact the kick accuracy."