What temperate do bumble bees need to survive?

Bumblebees thrive in temperatures between 10°C and 30°C (50°F to 86°F). They are most active and effective at pollination when temperatures are around 20°C to 25°C (68°F to 77°F). Extreme cold can hinder their ability to fly, while excessively high temperatures can lead to heat stress. Consequently, maintaining optimal temperature conditions is crucial for their survival and productivity.