Yes, but generally this would be used the opposite direction. If cloud bases are unavailable, or if weather is changing rapidly, you could use say barometric pr

Yes, but generally this would be used the opposite direction. If cloud bases are unavailable, or if weather is changing rapidly, you could use say barometric pressure + dew point to determine "is this about to go south towards low clouds and low vis?" (Also, cloud bases are part of the METAR info in the first place, so it's a "neither" situation)