Are you sure brown spots aren't poa?
Last year, poa took over a LOT of lawns, and up until we hit the 90's, it was thriving...now it's all brown!
Red thread takes on a variety of "looks" as well. My cases WERE red though a few weeks ago! They are slowly growing out.
These temps and overnight temps/humidity are a disaster for fungus of all types.
2004 GMC 2500HD Reg Cab BOSS 9.2 V-Plow
2013 eXmark LazerZ X-Series 60" 34hp EFI (RED) Kohler
2006 Hustler SuperZ 28EFI 60" Power Chute Design OCDC SOLD!
1996 48" SCAG Belt WB 14hp Kawasaki Classic Deck
Echo 2 strokes PB-755 & SRM 280
Eastman WM20H 20" Commercial Push mower (NEW for 2013)
Commercial Lawnboy trim mower 2-FOR SALE!
Solo since 1980