I m feeling some vibration sense in my lower abdomen continuously, exactly at the site of uterus, this is more during cool climate, what may be te cause?

Unclear. : What you're describing doesn't seem to have a clear cause. Sometimes we get muscle fascinations (tiny twitching) due to muscle strain. If you were doing a lot of situps or core exercises recently, it could be from that. I don't know what to make of the cool climate relationship. Check in with your doctor, and they'll be able to do a more thorough history and exam. Best of luck!