According to the University of Maine and many other reputable institutions of higher learning, honey bees will fly when temperatures are 12.8°C (55°F) and higher. Most beekeepers on the island of Newfoundland know that’s that a joke. My bees would virtually never go outside if they had to wait for the temperature to go up to 13°C. Here’s a short video I happened to record that shows my bees foraging and bringing in pollen when the thermometer was reading 4°C (39°F).
My thermometer isn’t always 100% accurate, so let’s say it was 6°C instead (43°F). That’s still well below the official foraging temperature. I guess the honey bees in Newfoundland didn’t get the memo that they weren’t supposed to fly when it’s this cold.