Yes, the jails have "winter wear" for the cold months. This includes a jacket and some form of longjohn undergarments. Also, inmates may buy supplimental clothing at the commissary.
https://www.inmateaid.com/ask-the-inmate/when-a-inmate-has-court-and-its-winter-time-does-the-prison-offer-the-inmate-a-sweater-or-jacket#answer
Accepted Answer Date Created: November 29,2018