Rollercoasters are also very sensitive to extreme weather, becoming a liability in high winds and heavy rain, causing closures with concerns of wind affecting the acceleration and deceleration of the trains and rain affecting braking effectiveness and sensors malfunctions.

Roller coasters close in the rain primarily due to braking safety and guest comfort. Most modern coasters rely on magnetic or friction brakes to stop the train; when the tracks and brake fins are wet, the coefficient of friction changes, which can lead to "overshooting" the station or inconsistent stopping distances. Furthermore, high-speed coasters (60+ mph) turn raindrops into "stinging needles" for riders, making the experience painful rather than fun. Additionally, rain is often accompanied by lightning or high winds. Standard safety protocols require a shutdown if lightning is detected within a certain radius (usually 10 miles). High winds can also prevent a coaster from completing its circuit (a "rollback"), especially on tall hills. While "light drizzle" might be okay for some wooden coasters or indoor rides, most parks prioritize safety and mechanical longevity by closing high-thrill attractions until the weather clears.