TPMS sensors have an internal battery. If the battery power is low, it can cause TPMS problems. When you have your tires changed, have them check your TPMS sensors and replace as needed. If you are worried about future problems it would be a good time to replace all of the sensors. When the battery level is low they can act up intermittently.
Ambient temperature changes will cause tire pressures to change. Tire pressures will drop about 1 psi for every 10°F drop in ambient temperature. This can cause your TPMS warning light to come on in cold temperatures, then go out as the tire warms up while driving.