It's cold and my knees are uncomfortable.

I found this for you, which is consistent with the symptoms you described. I hope it helps you, and I wish you a speedy recovery. In daily life, most joint pains are not caused by trauma. Long-term cold and huge temperature difference are the main causes of joint pain. Especially in autumn when the temperature changes alternately, low temperature or huge temperature difference will make muscles and blood vessels contract, causing joint pain. If this happens, first of all, keep warm as much as possible. The second is to reduce the amount of exercise and let the joints rest. If the above methods can't make knee pain better, then you should go to the hospital to find the reason.