As the temp drops, shooting tends to drop too. Nothing wrong with that, that's just the way it is. Trouble is as shooting drops, the skills atrophy too. So, what to do.
I'd say now is the time to increase your dry fire practice. Turn it into a video game even. I'll take my carry gun, drop the mag, lock the slide back, verify clear, verify clear verify clear and then have someone else verify clear. Now, pick a show on TV and whenever whatever you choose happens, draw, sight and squeeze (or say bang, whatever). I like shooting hubcaps. Every time a car shows on the screen, I try to get at least one hubcap. But it's more important to run the draw by the numbers and verify a good sight picture than anything else.
Practicing the draw is more important now too. We as (nominally) non-fur bearing mammals tend to wear more layers and your draw will need to take this in account too. It's pretty easy to sweep a covering polo or Hawaiian type shirt up with the off hand, now I find that I have to grip the cover garment (hoodie, sweater, flannel) to get it clear. Which changes things a bit.
I know this is all stuff you've heard before. But even the basics bear repeating. Like the 4 rules of safe gun handling. Wanna recite them now? So, if you don't have an indoor range all heated and lit to go to, call your shooting buddy up, invite him over and you can drill each other on your draw and sight techniques. What the hey, put some chips and dip out and some chili on the stove.