RE: maybe a stupid question...
I've flown in HK and there isn't a winter there... there is fall at best when it reaches 10 degrees centigrade or 50 degrees fahrenheit. Don't tell me you can handle that cold... Serious, people bust out the fur coat when it's shorts weather for me!
The only time I didn't fly in Hong Kong is when it showered... even in light rain I'd get a plastic bag, poke a hole through the bottom for the antenna and stick my TX in.
Where are you?