Knowledge of a monthly seasonal trend is important. But most cattle feeders sell cattle on a particular day rather than in a particular month. Weekly seasonal averages provide more precise information needed for the best job.
Hunter, Donald J. and Kutish, Franics A.
"Weekly Beef Cattle Seasonal Price Patterns,"
Iowa Farm Science: Vol. 9
, Article 3.
Available at: https://lib.dr.iastate.edu/farmscience/vol9/iss3/3