Hi,
Winter weather in Orlando is completely unpredictable. You could have warm days (80s) with cool mornings, or you could have mornings near freezing with afternoons in the 40s or 50s. Or you could have a little of both, or something in between.
Current forecasts for the upcoming weekend have afternoons in the 60s and mornings in the 40s, but that sould change between now and Friday.
I'm not sure what you mean by being terrified of "bad weather." There will be no hurricanes this weekend, but it might be chilly and possibly a little rainy. Cold and rain equals bad weather at this time of year in Central Florida.
Enjoy your trip!