My thermostat is on an exterior wall, so the reading is affected by the outdoor temperature. I need to adjust it every few weeks as it gets colder so it doesn't

My thermostat is on an exterior wall, so the reading is affected by the outdoor temperature. I need to adjust it every few weeks as it gets colder so it doesn't turn my house into a sauna in the winter time. Obviously this is not ideal, but count this story as one more anecdotal example that some people change their thermostat frequently.