What can I expect BCT to be like at Fort Sill Oklahoma (weather, terrain, etc.)?

Weather wise, you're looking at 80s-90s daily temp. Humidity is average around 60-70%. Terrain is varied. From flat to mountain.

As for getting mentally prepared....just know you're going to be tired, physically and mentally taxed.

If you're shipping out in May, you'll be there into the summer. Expect it to get hot as hell, maybe somewhat humid too. I went to Advanced Camp in Kansas during June/July, and it was pretty rough. Freaky and scary storms too.

Gil Gonzalez Below is a previous post. Search on "Fort Sill," and then click on "Answers to find the other posts.

https://www.rallypoint.com/answers/how-can-i-excel-in-basic-training

I left Ft. Sill in January. Getting there in May means you’ll be in Oklahoma for the summer. Be prepared to sweat, a lot! Stay hydrated while you’re there, heat casualties are no joke and you can get a med board if you miss too much training due to being a heat cat. The terrain is mostly flat, OK is a boring state, there’s not a lot to do around the base but don’t worry, you’ll never get to go off post anyhow (check out the artillery museum and the great planes museum when you get to family day, both of those museums are Awesome!)
I would start doing some hiking (rucking) now so your feet are used to all of the walking you’ll be doing, you walk everywhere in BCT.
Don’t go insane during reception, it will seem like purgatory but don’t fret for it won’t last forever! (Reception is the WORST part of BCT, you’ll soon learn to hate Vessey Hall)
Two biggest pieces of advice that I wish I had when I got to Fort Sill are: don’t let the bastards get you down, and don’t forget to drink the Kool-Aid!

Good afternoon Gil Gonzalez. Excellent post. Thanks for sharing this. I recall having to go through the Warrior Transition Course or WTC at Fort Sill. I did it in January of 2010. I do know that is gets cold and snowy during the Winter months. Not sure about the May time frame though.

It sucks is the kindest thing I can say about Ft. Sill. They do get some monster storms as they are still in tornado alley plus it's flat as a pancake. Ft. Sill is the armpit of hell on its best day.

Gil Gonzalez Part of your mental preparation is to be certain that your spouse and family are ready nd able to deal with your extended absence and out of communication status during your BCT period. Cannot be over emphasized, because that will have a long term impact on your continued service. Thanks for being willing to serve.

Made it through BCT. Not nearly as bad as i was expecting. Next stop Fort Sam Houston Texas. I am currently a holdover, my orders were messed up. As well as many others.

During Basic Combat Training (BCT) at Fort Sill, Oklahoma, you can expect certain weather conditions, terrain features, and training activities. Here's an overview from https://www.edmondpaintingpros.com:

Weather: Fort Sill experiences a mix of weather conditions throughout the year. Summers are typically hot and humid, with temperatures often exceeding 90°F (32°C). Winters can be cold, with temperatures occasionally dropping below freezing. It's advisable to prepare for both extreme heat and cold weather during your training.

Terrain: Fort Sill is located in the southern part of Oklahoma, which primarily consists of rolling prairies and grasslands. The terrain is relatively flat, with occasional gentle slopes and small hills. The open landscape provides ample space for various training activities.