We race outdoor all year anyway.
The only difference to me is my shorts get swapped for jeans, and the cooler box replaced with a gas stove and kettle. Maybe a woolly hat if it's below freezing.
If you want to go to town with waterproofing, you can get liquid mask and pop the servo, RX and ESC apart and give them a coat inside on the PCBs.
I'm not keen on the TX muffs, and don't like driving with gloves on either so I just grin and bear it for 5 minutes then put gloves on to marshal. When it's been hoofing it down I have used a plastic carrier bag looped through my wrists to protect my TX in the past.
Correct tyres for the colder / wetter conditions and just enjoy it (Ballistic Buggy greens for me).
