I wear a jacket in the morning but it is too warm in the evenings. Obviously I need to the jacket at home for the next morning. I generally just have a bag on the back of my bike (see below) and it already has things like a thin face mask, this that and the other.... other things that are likely to be needed if the weather turns a bit colder or is worse going in than out, etc. I don't seem to have room to carry my jacket, which is more bulky than a higher-tech, more expensive one. Do you just suck it up and wear it home or strap it to your bike somehow? Do you just make sure you have enough storage to put those things and therefore don't have the issue to begin with?

Panniers?
Milk crate?
I use a Topeak MTX TrunkBag DXP with pannier bags that zip out when needed.

Put your jacket on top of the bag and strap it down with a cargo net?

+1 on the Topeak. Used to carry a stuff sack and bungee the extra clothes on top of the trunk bag.

Yup, roll it up and bungee it to the top of the bag

Either get a slightly bigger bag, or pack lighter, or strap the jacket down. You might use a larger bag or pannier to prelocate spare clothes t work once a week or so.

It isn't too complicated,------ improvise.

OR

Here's something I started doing this summer. The USPS offers something called "Regional Flat Rate Boxes". These come in 2 sizes and cost $5.32 or $6.16 to ship locally depending on the size. Plus they're generally delivered overnight for about a 30 mile radius. So I use these to periodically the imbalance in stuff I haul between home and work (spare underwear, socks, rain gear, etc.) when I'm too lazy to bother carrying my messenger bag for the commute. It was really nice all summer, because I could travel light, and make a pleasant long ride of it going home in the evening.

I have tied an extra shirt or jacket around my top tube.
Now I have panniers so it's not a problem.

If I need to strip my jacket off mid-ride and don't have time to stuff it in the panniers (e.g., at a red light), I just tie it around my waist. As a bonus, it adds a little padding to my saddle!

I wear my Shower's Pass rain jacket in the morning. I fold it up and put it in my pannier on my way home.

That would probably work best with my current setup. Thanks for the thought.

All good thoughts. Thanks everybody.

I recommend putting the jacket into some kind of bag then strapping it to the top of your trunk bag.
Too many times I've seen the sleeves work their way loose and flap around. You do not want them getting into the spokes.
A bag will also keep the jacket cleaner and drier. A small plastic shopping bag is fine.

Another approach is an ultralight drawstring backpack. They work great for bulky but light and soft things like jackets, baselayers, and tights. Good if temperatures are below 75F.

That would work well with strapping it to the top of the bag I have on the rear of my bike. Thanks for that.

I have the same situation as the OP and use the DXP. Love the drop down panniers.

Get a big backpack and tie it with bungee cords to the rack. That's what I do.

You could also try with panniers, though they are sometimes less convenient.

Colder weather - more clothes to change, more room. It's normal.

It's hard to tell from your picture but it looks like your bag expands. Does it have a second zipper on the top that goes all the way around the bag? Even if it doesn't expand, it's not that difficult to get 10 lbs of potatoes in a 5 lb sack. Put anything small...socks, underwear, gloves, etc...in the side and rear pockets. Put larger stuff in the top compartment and then roll everything else as tightly as possible in the main compartment. I've been using rack bags exclusively for about 30 years...I hate using panniers...and I live in an area where the temperature can be 20 F in the morning and 75F at night.

If all else fails, I carry a rack strap like this one to bungee stuff to the top. I don't use it that often, however.

I wear a back pack as part of my "winter gear" mostly for storing layers.

It does expand and I do that here and there depending on what I need to shove in there. I'm working on not packing so much "hey I might need this!" stuff so I can have room for what I ACTUALLY need. Hard to do here and there.

I do have a Burly Travoy that I use when I need to take several days worth of stuff in but I don't pull it just to put a jacket on. I think the combination of freeing up room in my rear bag and using a bungie strap will get me by.

I thank everybody for their input.

I just put my jacket in my backpack. If it won't fit I strap it to my pack.

In your case, if the jacket won't fit in your rear bag, roll it up and strap/bungee it to the top of your bag. Watch to make sure the sleeves won't work loose and get in the spokes. Done that already.

Two words: 100 jackets

Yup this time of year, along with spring, thats the nature of the beast. Personally I would go with panniers just for that reason.

I wear a jersey on my commute. I often roll up my jacket and put it in one of the rear pockets.

That's the word, bird. I'm rolling 30-35 F in the mornings, and 65+ in the evenings lately. I dress for the wx in the morning, and carry the evening's clothing...swap it out for the return home in the evening. No big deal.

I stuff my jacket into its' sleeve, that keeps things from flapping around.

with fall/winter here now, I have to have full size panniers. As I not only have to layer for the cold mornings, but also be prepared for the rain too.
When I don't need the big panniers, I also have a bag that looks like your top bag, but mine has drop down mini panniers. If it wasn't for all the rain gear, it would easily hold the "layers"

mines like this , but made by "Giant"
https://www.amazon.com/Eleven81-State...ags+expandable